Auto-populate & auto-score tennis Grand Slam brackets from Wikipedia

Add a per-event "Sync Draw" that pulls a tennis major's full 128-player
draw from its Wikipedia article, auto-creates/links participants (and
propagates them to every linked sibling season), builds the bracket, and
runs the qualifying-points scorer. Re-running advances the bracket and
scoring as matches complete.

Core
- match-sync: WikipediaTennisAdapter + wikitext bracket parser, DrawSync
  DTOs, syncTennisDraw orchestrator, pure draw->rows mapping
- playoff-match: populateBracketFromDraw (idempotent upsert on externalMatchId)
- scoring_events.externalSourceKey column (Wikipedia article; migration 0123)
- admin bracket "Sync Draw" card (accepts URL or title) + cron pass

Scoring fix
- deriveBracketQualifyingStates only floors players who have reached the
  scoring stage; for deep brackets (tennis_128) early-round losers earn 0 QP
  instead of a phantom 9th-place floor. CS2/simple_8 behavior preserved
  (gated on rounds[0].isScoring). Re-sync reconciles stale QP rows in a
  transaction.

Matching & parsing
- accent-folding in normalizeTeamName; strip Wikipedia "(tennis)"
  disambiguators; treat Bye/TBD/Qualifier as TBD; extract wikilink before
  template-stripping so {{nowrap}}-wrapped players parse

Admin UX
- dry-run preview (matched / will-create / possible duplicates / unfilled
  slots) with inline "rename existing" / "create as new" resolution via
  fetcher (no full reload)

Tests: parser vs real 2025 Wimbledon fixture, draw mapping, tennis_128
scoring, accent/disambiguator/nowrap parsing, URL parsing.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/lib/__tests__/normalize-team-name.test.ts

@@ -14,6 +14,11 @@ describe("normalizeTeamName", () => {
     const name = "oklahoma city thunder";
     expect(normalizeTeamName(name)).toBe(name);
   });
+
+  it("folds accents so diacritics don't block a match", () => {
+    expect(normalizeTeamName("Stéfanos Tsitsipás")).toBe("stefanos tsitsipas");
+    expect(normalizeTeamName("Félix Auger-Aliassime")).toBe("felix auger-aliassime");
+  });
 });
 
 describe("findMatchingTeamName", () => {
@@ -38,6 +43,12 @@ describe("findMatchingTeamName", () => {
     expect(findMatchingTeamName("Oklahoma City", participants)).toBe("Oklahoma City Thunder");
   });
 
+  it("matches across accents (API has them, our list doesn't)", () => {
+    expect(findMatchingTeamName("Stéfanos Tsitsipás", ["Stefanos Tsitsipas"])).toBe(
+      "Stefanos Tsitsipas",
+    );
+  });
+
   it("returns null for unmatched name", () => {
     expect(findMatchingTeamName("Phoenix Suns", participants)).toBeNull();
   });

app/lib/normalize-team-name.ts

@@ -1,9 +1,15 @@
 /**
- * Normalize a team name for fuzzy matching across data sources.
- * Lowercases, trims, and collapses whitespace.
+ * Normalize a team/participant name for fuzzy matching across data sources.
+ * Folds accents (so "Stéfanos Tsitsipás" matches a plain "Stefanos Tsitsipas"),
+ * lowercases, trims, and collapses whitespace.
  */
 export function normalizeTeamName(name: string): string {
-  return name.toLowerCase().trim().replace(/\s+/g, " ");
+  return name
+    .normalize("NFKD")
+    .replace(/[̀-ͯ]/g, "") // strip combining diacritical marks
+    .toLowerCase()
+    .trim()
+    .replace(/\s+/g, " ");
 }
 
 /**

app/models/__tests__/qualifying-bracket-scoring.test.ts

@@ -146,6 +146,57 @@ describe("deriveBracketQualifyingStates (simple_8)", () => {
   });
 });
 
+// ── tennis_128: scoring starts deep (Round of 16), not at round 1 ─────────────
+
+describe("deriveBracketQualifyingStates (tennis_128 — deep scoring start)", () => {
+  const TENNIS = BRACKET_TEMPLATES["tennis_128"];
+  const tStates = (matches: BracketMatchInput[]) =>
+    deriveBracketQualifyingStates(matches, TENNIS.rounds, (round) =>
+      getRoundConfig(round, "tennis_128"),
+    );
+
+  it("awards NO QP to a player who lost before the Round of 16", () => {
+    const s = tStates([
+      played("Round of 128", "winner", "earlyLoser"),
+    ]);
+    expect(s.has("earlyLoser")).toBe(false); // 0 QP — didn't reach scoring
+  });
+
+  it("awards NO QP just for winning a pre-scoring round (still short of R16)", () => {
+    // Won R128, next match (R64) not played → not yet in the Round of 16.
+    const s = tStates([played("Round of 128", "p", "x")]);
+    expect(s.has("p")).toBe(false);
+  });
+
+  it("gives NO entry floor to undrawn/unplayed players (the 9th-place bug)", () => {
+    const s = tStates([
+      pending("Round of 128", "a", "b"),
+      pending("Round of 128", "c", "d"),
+    ]);
+    expect(s.size).toBe(0); // nobody has earned anything yet
+  });
+
+  it("floors a player who reached the Round of 16 (won R32) at T9–16", () => {
+    // a wins R128 → R64 → R32, so a is now IN the Round of 16 (not yet played).
+    const s = tStates([
+      played("Round of 128", "a", "x1"),
+      played("Round of 64", "a", "x2"),
+      played("Round of 32", "a", "x3"),
+    ]);
+    expect(s.get("a")).toEqual({ placement: 9, tieCount: 8 });
+    // The players a beat in non-scoring rounds earn nothing.
+    expect(s.has("x1")).toBe(false);
+  });
+
+  it("locks an actual Round of 16 loser at T9–16 and floors the winner at T5–8", () => {
+    const s = tStates([
+      played("Round of 16", "r16winner", "r16loser"),
+    ]);
+    expect(s.get("r16loser")).toEqual({ placement: 9, tieCount: 8 });
+    expect(s.get("r16winner")).toEqual({ placement: 5, tieCount: 4 }); // QF floor
+  });
+});
+
 // ── QP values (the worked example) ────────────────────────────────────────────
 
 describe("guaranteed-minimum QP per outcome (default config)", () => {

app/models/playoff-match.ts

@@ -142,6 +142,96 @@ export async function setMatchWinner(
   return match;
 }
 
+/** A draw match with participants/winner already resolved to ids. */
+export interface ResolvedDrawMatch {
+  externalMatchId: string;
+  round: string;
+  matchNumber: number;
+  participant1Id: string | null;
+  participant2Id: string | null;
+  winnerId: string | null;
+  loserId: string | null;
+  isScoring: boolean;
+}
+
+/**
+ * Populate (or advance) a bracket from a fully-resolved external draw, keyed on
+ * `externalMatchId` so repeated syncs update in place rather than duplicating.
+ *
+ * Unlike `generateBracketFromTemplate` (which seeds only round 1 and leaves later
+ * rounds empty for `advanceWinnerTemplate`), this writes every round's actual
+ * matchups and known winners directly from the source — appropriate for a feed
+ * (e.g. Wikipedia) that reports the full draw including completed rounds. A row
+ * is marked complete when both its winner and loser are known.
+ *
+ * @returns counts of rows written (inserted or updated) and those carrying a result.
+ */
+export async function populateBracketFromDraw(
+  eventId: string,
+  matches: ResolvedDrawMatch[]
+): Promise<{ written: number; completed: number }> {
+  const db = database();
+
+  const existing = await db.query.playoffMatches.findMany({
+    where: eq(schema.playoffMatches.scoringEventId, eventId),
+  });
+  const byExternalId = new Map(
+    existing
+      .filter((m) => m.externalMatchId)
+      .map((m) => [m.externalMatchId as string, m])
+  );
+
+  const toInsert: NewPlayoffMatch[] = [];
+  let written = 0;
+  let completed = 0;
+
+  for (const m of matches) {
+    const isComplete = m.winnerId !== null && m.loserId !== null;
+    if (isComplete) completed++;
+
+    const existingRow = byExternalId.get(m.externalMatchId);
+    if (existingRow) {
+      await db
+        .update(schema.playoffMatches)
+        .set({
+          round: m.round,
+          matchNumber: m.matchNumber,
+          participant1Id: m.participant1Id,
+          participant2Id: m.participant2Id,
+          winnerId: m.winnerId,
+          loserId: m.loserId,
+          isComplete,
+          isScoring: m.isScoring,
+          templateRound: m.round,
+          updatedAt: new Date(),
+        })
+        .where(eq(schema.playoffMatches.id, existingRow.id));
+      written++;
+    } else {
+      toInsert.push({
+        scoringEventId: eventId,
+        round: m.round,
+        matchNumber: m.matchNumber,
+        participant1Id: m.participant1Id,
+        participant2Id: m.participant2Id,
+        winnerId: m.winnerId,
+        loserId: m.loserId,
+        isComplete,
+        isScoring: m.isScoring,
+        templateRound: m.round,
+        externalMatchId: m.externalMatchId,
+      });
+    }
+  }
+
+  if (toInsert.length > 0) {
+    await createManyPlayoffMatches(toInsert);
+    written += toInsert.length;
+  }
+
+  return { written, completed };
+}
+
 /**
  * Generate a standard single elimination bracket structure
  */

app/models/scoring-calculator.ts

@@ -727,15 +727,38 @@ export function deriveBracketQualifyingStates(
     }
 
     if (!highest) {
-      // In the bracket but no match resolved yet → entry floor.
-      const cfg = firstScoringRound ? getConfig(firstScoringRound.name) : null;
+      // In the bracket but no match resolved yet → sitting in the first round.
+      // Only grant an entry floor if that first round is itself a scoring round
+      // (e.g. simple_8 / CS2 Champions Stage, where every entrant is already in
+      // the scoring stage). For deep brackets whose scoring starts later
+      // (tennis_128: Round of 128 → … → Round of 16), merely being drawn earns
+      // nothing — no QP until the player reaches the first scoring round.
+      if (!rounds[0]?.isScoring || !firstScoringRound) continue;
+      const cfg = getConfig(firstScoringRound.name);
       if (!cfg) continue;
       result.set(id, { placement: cfg.loserPosition, tieCount: firstScoringRound.matchCount });
       continue;
     }
 
     const cfg = getConfig(highest);
-    if (!cfg) continue;
+    if (!cfg) {
+      // Won a non-scoring round. If that win advanced them INTO a scoring round,
+      // they've guaranteed that round's loser floor (e.g. a tennis R32 win → in
+      // the Round of 16 → guaranteed T9–16). Otherwise (won an earlier
+      // non-scoring round) they've earned no QP yet.
+      const feedsInto = feedsIntoByRound.get(highest) ?? null;
+      const nextRound = feedsInto ? rounds.find((r) => r.name === feedsInto) : null;
+      if (nextRound?.isScoring) {
+        const floorCfg = getConfig(nextRound.name);
+        if (floorCfg) {
+          result.set(id, {
+            placement: floorCfg.loserPosition,
+            tieCount: nextRound.matchCount,
+          });
+        }
+      }
+      continue;
+    }
     if (cfg.winnerFloor === null) {
       // Won the finalization round → champion (or 3rd-place-game winner).
       result.set(id, { placement: cfg.winnerPosition ?? 1, tieCount: 1 });

app/models/scoring-event.ts

@@ -42,6 +42,8 @@ export interface UpdateScoringEventData {
   scoringStartsAtRound?: string;
   /** Per-event region config for NCAA-style brackets (overrides template defaults) */
   bracketRegionConfig?: BracketRegion[] | null;
+  /** External data-source locator (e.g. Wikipedia article title for tennis draws) */
+  externalSourceKey?: string | null;
 }
 
 /**
@@ -173,6 +175,7 @@ export async function updateScoringEvent(
   if (data.bracketTemplateId !== undefined) updateData.bracketTemplateId = data.bracketTemplateId;
   if (data.scoringStartsAtRound !== undefined) updateData.scoringStartsAtRound = data.scoringStartsAtRound;
   if (data.bracketRegionConfig !== undefined) updateData.bracketRegionConfig = data.bracketRegionConfig;
+  if (data.externalSourceKey !== undefined) updateData.externalSourceKey = data.externalSourceKey;
 
   const [updated] = await db
     .update(schema.scoringEvents)

app/routes/admin.sports-seasons.$id.events.$eventId.bracket.server.ts

@@ -1,7 +1,11 @@
 import type { Route } from "./+types/admin.sports-seasons.$id.events.$eventId.bracket";
 
 import { findSportsSeasonById } from "~/models/sports-season";
-import { findParticipantsBySportsSeasonId } from "~/models/season-participant";
+import {
+  findParticipantsBySportsSeasonId,
+  createParticipant,
+  updateParticipant,
+} from "~/models/season-participant";
 import { getScoringEventById, updateScoringEvent, isReadOnlySibling } from "~/models/scoring-event";
 import {
   findPlayoffMatchesByEventId,
@@ -62,6 +66,8 @@ import * as schema from "~/database/schema";
 import { eq } from "drizzle-orm";
 import { maybeResolveCompletedBracktForSportsSeason } from "~/services/brackt.server";
 import { fanOutMajorIfPrimary } from "~/services/sync-tournament-results";
+import { syncTennisDraw, previewTennisDraw } from "~/services/match-sync";
+import { articleTitleFromInput } from "~/services/match-sync/wikipedia-tennis";
 
 export async function loader({ params }: Route.LoaderArgs) {
   const sportsSeason = await findSportsSeasonById(params.id);
@@ -159,6 +165,72 @@ export async function action({ request, params }: Route.ActionArgs) {
     }
   }
 
+  if (intent === "create-draw-participant") {
+    const name = (formData.get("name") as string | null)?.trim();
+    const externalId = (formData.get("externalId") as string | null)?.trim() || null;
+    if (!name) return { error: "Participant name is required" };
+    try {
+      await createParticipant({ sportsSeasonId: params.id, name, externalId });
+      return { success: `Created "${name}". Re-run Preview or Sync Draw to apply.` };
+    } catch (error) {
+      return { error: error instanceof Error ? error.message : "Failed to create participant" };
+    }
+  }
+
+  if (intent === "relink-draw-participant") {
+    const participantId = formData.get("participantId") as string | null;
+    const name = (formData.get("name") as string | null)?.trim();
+    const externalId = (formData.get("externalId") as string | null)?.trim() || null;
+    if (!participantId || !name) return { error: "Participant and name are required" };
+    try {
+      await updateParticipant(participantId, { name, externalId });
+      return { success: `Renamed and linked to "${name}". Re-run Preview or Sync Draw to apply.` };
+    } catch (error) {
+      return { error: error instanceof Error ? error.message : "Failed to update participant" };
+    }
+  }
+
+  if (intent === "preview-draw") {
+    const rawInput = (formData.get("externalSourceKey") as string | null)?.trim();
+    const articleTitle = rawInput ? articleTitleFromInput(rawInput) : "";
+    // Persist the article so the user can preview, then sync, without re-entering.
+    if (articleTitle) {
+      await updateScoringEvent(params.eventId, { externalSourceKey: articleTitle });
+    }
+    try {
+      const preview = await previewTennisDraw(params.eventId);
+      return { drawPreview: preview };
+    } catch (error) {
+      logger.error("[preview-draw] error:", error);
+      return { error: error instanceof Error ? error.message : "Failed to preview draw" };
+    }
+  }
+
+  if (intent === "sync-draw") {
+    const rawInput = (formData.get("externalSourceKey") as string | null)?.trim();
+    // Accept a pasted Wikipedia URL or a plain article title; store the title.
+    const articleTitle = rawInput ? articleTitleFromInput(rawInput) : "";
+    if (articleTitle) {
+      await updateScoringEvent(params.eventId, { externalSourceKey: articleTitle });
+    }
+    try {
+      const result = await syncTennisDraw(params.eventId);
+      const reviewNote =
+        result.unmatched.length > 0
+          ? ` ${result.unmatched.length} auto-created player(s) need a quick review for possible duplicates.`
+          : "";
+      return {
+        success:
+          `Synced draw: ${result.matchesWritten} matches written ` +
+          `(${result.completed} completed), ${result.participantsCreated} participant(s) added.${reviewNote}`,
+        drawSyncResult: result,
+      };
+    } catch (error) {
+      logger.error("[sync-draw] error:", error);
+      return { error: error instanceof Error ? error.message : "Failed to sync draw" };
+    }
+  }
+
   if (intent === "generate-bracket") {
     const templateId = formData.get("templateId");
 

app/routes/admin.sports-seasons.$id.events.$eventId.bracket.tsx

@@ -1,4 +1,4 @@
-import { Form, Link } from "react-router";
+import { Form, Link, useFetcher } from "react-router";
 import { Fragment, useState, useEffect, useMemo, useRef } from "react";
 import { localDateTimeToUtcIso, utcIsoToLocalDateTime } from "~/lib/date-utils";
 import type { Route } from "./+types/admin.sports-seasons.$id.events.$eventId.bracket";
@@ -93,6 +93,62 @@ function GroupMatchScheduleForm({
 
 export { loader, action };
 
+/**
+ * One "possible duplicate" row in the draw preview. Uses a fetcher so resolving
+ * it (rename existing / create as new) submits in the background — the preview
+ * stays on screen instead of reloading the page and forcing a fresh dry run.
+ */
+function DuplicateRow({
+  p,
+}: {
+  p: { name: string; externalId: string | null; suggestion: string; suggestionId: string };
+}) {
+  const fetcher = useFetcher<{ success?: string; error?: string }>();
+  const busy = fetcher.state !== "idle";
+
+  return (
+    <li className="flex flex-wrap items-center gap-x-2 gap-y-1">
+      <span>
+        <span className="font-medium">{p.name}</span>
+        <span className="text-muted-foreground"> → looks like </span>
+        <span className="font-medium">{p.suggestion}</span>
+      </span>
+      {fetcher.data?.success ? (
+        <span className="text-xs font-medium text-emerald-500">✓ {fetcher.data.success}</span>
+      ) : (
+        <fetcher.Form method="post" className="flex items-center gap-2">
+          <input type="hidden" name="name" value={p.name} />
+          <input type="hidden" name="externalId" value={p.externalId ?? ""} />
+          <input type="hidden" name="participantId" value={p.suggestionId} />
+          <Button
+            type="submit"
+            name="intent"
+            value="relink-draw-participant"
+            size="sm"
+            variant="outline"
+            disabled={busy}
+          >
+            Rename “{p.suggestion}” → “{p.name}”
+          </Button>
+          <Button
+            type="submit"
+            name="intent"
+            value="create-draw-participant"
+            size="sm"
+            variant="outline"
+            disabled={busy}
+          >
+            Create as new
+          </Button>
+        </fetcher.Form>
+      )}
+      {fetcher.data?.error && (
+        <span className="text-xs text-destructive">{fetcher.data.error}</span>
+      )}
+    </li>
+  );
+}
+
 export default function EventBracket({
   loaderData,
   actionData,
@@ -375,6 +431,164 @@ export default function EventBracket({
             </div>
           )}
 
+          {/* Possible-duplicate review after a draw sync */}
+          {actionData?.drawSyncResult && actionData.drawSyncResult.unmatched.length > 0 && (
+            <Card className="border-amber-500/40">
+              <CardHeader>
+                <CardTitle className="text-amber-500">
+                  Review {actionData.drawSyncResult.unmatched.length} possible duplicate
+                  {actionData.drawSyncResult.unmatched.length === 1 ? "" : "s"}
+                </CardTitle>
+                <CardDescription>
+                  These players were auto-created but closely resemble an existing participant —
+                  if a duplicate, results won&apos;t reach the drafted copy. To fix: on the{" "}
+                  <Link
+                    to={`/admin/sports-seasons/${sportsSeason.id}/participants`}
+                    className="underline font-medium"
+                  >
+                    participants page
+                  </Link>
+                  , set the correct participant&apos;s external ID to the Wikipedia name, delete the
+                  duplicate, then click <span className="font-medium">Sync Draw</span> again.
+                </CardDescription>
+              </CardHeader>
+              <CardContent>
+                <ul className="space-y-1 text-sm">
+                  {actionData.drawSyncResult.unmatched.map((p) => (
+                    <li key={p.externalId ?? p.name} className="flex items-center gap-2">
+                      <span className="font-medium">{p.name}</span>
+                      {p.externalId && p.externalId !== p.name && (
+                        <span className="text-muted-foreground text-xs">({p.externalId})</span>
+                      )}
+                    </li>
+                  ))}
+                </ul>
+              </CardContent>
+            </Card>
+          )}
+
+          {/* Dry-run preview of a draw sync */}
+          {actionData?.drawPreview && (
+            <Card className="border-sky-500/40">
+              <CardHeader>
+                <CardTitle className="text-sky-500">Draw preview (no changes made)</CardTitle>
+                <CardDescription>{actionData.drawPreview.article}</CardDescription>
+              </CardHeader>
+              <CardContent className="space-y-3 text-sm">
+                <div className="grid grid-cols-2 gap-x-6 gap-y-1 sm:grid-cols-3">
+                  <div>
+                    Players: <span className="font-medium">{actionData.drawPreview.totalPlayers}</span>
+                  </div>
+                  <div>
+                    Matched:{" "}
+                    <span className="font-medium text-emerald-500">
+                      {actionData.drawPreview.matched}
+                    </span>
+                  </div>
+                  <div>
+                    Will create:{" "}
+                    <span className="font-medium">{actionData.drawPreview.willCreate.length}</span>
+                  </div>
+                  <div>
+                    Matches:{" "}
+                    <span className="font-medium">
+                      {actionData.drawPreview.completedMatches}/{actionData.drawPreview.totalMatches}{" "}
+                      done
+                    </span>
+                  </div>
+                  <div>
+                    Unfilled R1 slots:{" "}
+                    <span className="font-medium">{actionData.drawPreview.tbdFirstRound}</span>
+                  </div>
+                </div>
+
+                {actionData.drawPreview.possibleDuplicates.length > 0 && (
+                  <div>
+                    <p className="font-medium text-amber-500">
+                      Possible duplicates ({actionData.drawPreview.possibleDuplicates.length}) — would
+                      be created but resemble an existing participant:
+                    </p>
+                    <ul className="mt-2 space-y-2">
+                      {actionData.drawPreview.possibleDuplicates.map((p) => (
+                        <DuplicateRow key={p.externalId ?? p.name} p={p} />
+                      ))}
+                    </ul>
+                    <p className="mt-2 text-xs text-muted-foreground">
+                      <span className="font-medium">Rename</span> if it&apos;s the same player (links
+                      the existing participant so it matches);{" "}
+                      <span className="font-medium">Create as new</span> if they&apos;re different
+                      people. Then re-run Preview or Sync Draw.
+                    </p>
+                  </div>
+                )}
+
+                {actionData.drawPreview.willCreate.length > 0 && (
+                  <details>
+                    <summary className="cursor-pointer text-muted-foreground">
+                      Show all {actionData.drawPreview.willCreate.length} players that would be created
+                    </summary>
+                    <ul className="mt-1 columns-2 sm:columns-3">
+                      {actionData.drawPreview.willCreate.map((p) => (
+                        <li key={p.externalId ?? p.name}>{p.name}</li>
+                      ))}
+                    </ul>
+                  </details>
+                )}
+
+                <p className="text-xs text-muted-foreground">
+                  Fix any duplicates on the{" "}
+                  <Link
+                    to={`/admin/sports-seasons/${sportsSeason.id}/participants`}
+                    className="underline font-medium"
+                  >
+                    participants page
+                  </Link>{" "}
+                  first, then click <span className="font-medium">Sync Draw</span>.
+                </p>
+              </CardContent>
+            </Card>
+          )}
+
+          {/* Sync Draw from Wikipedia — tennis Grand Slam auto-populate + auto-score */}
+          {event.isQualifyingEvent &&
+            sportsSeason.sport.simulatorType === "tennis_qualifying_points" && (
+              <Card>
+                <CardHeader>
+                  <CardTitle>Sync Draw from Wikipedia</CardTitle>
+                  <CardDescription>
+                    Auto-populate and score this Grand Slam bracket from its Wikipedia draw
+                    article. Re-run during the tournament to pull in completed matches.
+                  </CardDescription>
+                </CardHeader>
+                <CardContent>
+                  <Form method="post" className="space-y-3">
+                    <div className="space-y-1.5">
+                      <Label htmlFor="externalSourceKey">Wikipedia draw page (URL or title)</Label>
+                      <Input
+                        id="externalSourceKey"
+                        name="externalSourceKey"
+                        placeholder="https://en.wikipedia.org/wiki/2025_Wimbledon_Championships_–_Men's_singles"
+                        defaultValue={event.externalSourceKey ?? ""}
+                      />
+                      <p className="text-xs text-muted-foreground">
+                        Paste the article URL or type the title — both work. Use{" "}
+                        <span className="font-medium">Preview</span> first to see matches and any
+                        new/duplicate players before writing anything.
+                      </p>
+                    </div>
+                    <div className="flex gap-2">
+                      <Button type="submit" name="intent" value="preview-draw" variant="outline">
+                        Preview (dry run)
+                      </Button>
+                      <Button type="submit" name="intent" value="sync-draw">
+                        Sync Draw
+                      </Button>
+                    </div>
+                  </Form>
+                </CardContent>
+              </Card>
+            )}
+
           {/* Reprocess Bracket - Full rebuild of participant results.
               Hidden once every match is complete — at that point all placements are final
               and "finalize bracket" should be used instead. */}

app/routes/admin/jobs.sync-matches.ts

@@ -2,7 +2,7 @@ import { and, eq, isNotNull } from "drizzle-orm";
 import { database } from "~/database/context";
 import * as schema from "~/database/schema";
 import { requireCronSecret } from "~/lib/cron-auth";
-import { syncMatches } from "~/services/match-sync";
+import { syncMatches, syncTennisDraw } from "~/services/match-sync";
 
 export async function action({ request }: { request: Request }) {
   requireCronSecret(request);
@@ -37,5 +37,39 @@ export async function action({ request }: { request: Request }) {
     }
   }
 
-  return Response.json({ synced, errors }, { status: errors.length > 0 && synced.length === 0 ? 500 : 200 });
+  // Tennis Grand Slam draws: sync each active tennis major's primary window from
+  // its configured Wikipedia article. (Tennis uses a per-event externalSourceKey,
+  // not a per-season externalSeasonId, so it isn't covered by the loop above.)
+  const tennisEvents = await db.query.scoringEvents.findMany({
+    where: and(
+      isNotNull(schema.scoringEvents.externalSourceKey),
+      eq(schema.scoringEvents.isQualifyingEvent, true),
+      eq(schema.scoringEvents.isComplete, false),
+    ),
+    with: { sportsSeason: { with: { sport: true } } },
+  });
+
+  const drawSynced: string[] = [];
+  for (const ev of tennisEvents) {
+    if (ev.sportsSeason?.status !== "active") continue;
+    if (ev.sportsSeason?.sport?.simulatorType !== "tennis_qualifying_points") continue;
+    // Skip read-only siblings of a shared major — results fan out from the primary.
+    if (ev.tournamentId && !ev.isPrimary) continue;
+    try {
+      await syncTennisDraw(ev.id);
+      drawSynced.push(ev.id);
+    } catch (err) {
+      errors.push({
+        id: ev.id,
+        name: ev.name ?? "(tennis draw)",
+        error: err instanceof Error ? err.message : String(err),
+      });
+    }
+  }
+
+  const okCount = synced.length + drawSynced.length;
+  return Response.json(
+    { synced, drawSynced, errors },
+    { status: errors.length > 0 && okCount === 0 ? 500 : 200 },
+  );
 }

app/services/match-sync/__tests__/tennis-draw-mapping.test.ts

@@ -0,0 +1,147 @@
+import { describe, it, expect } from "vitest";
+import {
+  playerKey,
+  canonicalPlayerName,
+  buildResolvedMatches,
+} from "../tennis-draw-mapping";
+import type { FetchedDraw, FetchedPlayer } from "../types";
+
+const sinner: FetchedPlayer = { name: "J Sinner", externalId: "Jannik Sinner", seed: 1 };
+const djokovic: FetchedPlayer = { name: "N Djokovic", externalId: "Novak Djokovic", seed: 6 };
+const noLink: FetchedPlayer = { name: "Some Qualifier", externalId: null, seed: null };
+
+describe("playerKey", () => {
+  it("prefers the external id", () => {
+    expect(playerKey(sinner)).toBe("id:Jannik Sinner");
+  });
+  it("falls back to a normalized name when there is no external id", () => {
+    expect(playerKey(noLink)).toBe("name:some qualifier");
+  });
+});
+
+describe("canonicalPlayerName", () => {
+  it("uses the full name from the external id, not the abbreviated display", () => {
+    expect(canonicalPlayerName(sinner)).toBe("Jannik Sinner");
+  });
+  it("uses the display name when there is no external id", () => {
+    expect(canonicalPlayerName(noLink)).toBe("Some Qualifier");
+  });
+
+  it("strips the trailing Wikipedia disambiguator", () => {
+    expect(
+      canonicalPlayerName({ name: "Arthur Fils", externalId: "Arthur Fils (tennis)", seed: null }),
+    ).toBe("Arthur Fils");
+  });
+});
+
+describe("buildResolvedMatches", () => {
+  const draw: FetchedDraw = {
+    templateId: "tennis_128",
+    rounds: [
+      {
+        roundName: "Round of 128",
+        matches: [
+          {
+            externalMatchId: "m-r128-1",
+            round: "Round of 128",
+            matchNumber: 1,
+            player1: sinner,
+            player2: noLink,
+            winner: 1,
+          },
+        ],
+      },
+      {
+        roundName: "Final",
+        matches: [
+          {
+            externalMatchId: "m-final",
+            round: "Final",
+            matchNumber: 1,
+            player1: djokovic,
+            player2: sinner,
+            winner: 2,
+          },
+        ],
+      },
+    ],
+  };
+
+  const idByKey = new Map<string, string>([
+    [playerKey(sinner), "sp-sinner"],
+    [playerKey(djokovic), "sp-djokovic"],
+    [playerKey(noLink), "sp-qual"],
+  ]);
+  const roundIsScoring = new Map<string, boolean>([
+    ["Round of 128", false],
+    ["Final", true],
+  ]);
+
+  const resolved = buildResolvedMatches(draw, idByKey, roundIsScoring);
+
+  it("maps winner slot 1 to winnerId/loserId", () => {
+    const r128 = resolved.find((m) => m.externalMatchId === "m-r128-1");
+    expect(r128?.winnerId).toBe("sp-sinner");
+    expect(r128?.loserId).toBe("sp-qual");
+    expect(r128?.isScoring).toBe(false);
+  });
+
+  it("maps winner slot 2 to the second player", () => {
+    const final = resolved.find((m) => m.externalMatchId === "m-final");
+    expect(final?.participant1Id).toBe("sp-djokovic");
+    expect(final?.participant2Id).toBe("sp-sinner");
+    expect(final?.winnerId).toBe("sp-sinner");
+    expect(final?.loserId).toBe("sp-djokovic");
+    expect(final?.isScoring).toBe(true);
+  });
+
+  it("leaves winner/loser null when the source reported no winner", () => {
+    const noWinnerDraw: FetchedDraw = {
+      templateId: "tennis_128",
+      rounds: [
+        {
+          roundName: "Round of 128",
+          matches: [
+            {
+              externalMatchId: "m-x",
+              round: "Round of 128",
+              matchNumber: 1,
+              player1: sinner,
+              player2: djokovic,
+              winner: null,
+            },
+          ],
+        },
+      ],
+    };
+    const [m] = buildResolvedMatches(noWinnerDraw, idByKey, roundIsScoring);
+    expect(m.winnerId).toBeNull();
+    expect(m.loserId).toBeNull();
+  });
+
+  it("defaults isScoring to false for an unknown round", () => {
+    const [m] = buildResolvedMatches(
+      {
+        templateId: "tennis_128",
+        rounds: [
+          {
+            roundName: "Mystery",
+            matches: [
+              {
+                externalMatchId: "m-y",
+                round: "Mystery",
+                matchNumber: 1,
+                player1: sinner,
+                player2: djokovic,
+                winner: 1,
+              },
+            ],
+          },
+        ],
+      },
+      idByKey,
+      new Map(),
+    );
+    expect(m.isScoring).toBe(false);
+  });
+});

app/services/match-sync/__tests__/wikipedia-tennis.test.ts

@@ -0,0 +1,176 @@
+import { describe, it, expect } from "vitest";
+import { readFileSync } from "node:fs";
+import { join } from "node:path";
+import {
+  parseTennisDrawWikitext,
+  parsePlayerCell,
+  parseTemplateParams,
+  extractTemplates,
+  slugifyArticle,
+  articleTitleFromInput,
+} from "../wikipedia-tennis";
+import type { FetchedRound } from "../types";
+
+const FIXTURE = readFileSync(
+  join(__dirname, "fixtures", "wimbledon-2025-mens-singles.wikitext"),
+  "utf-8",
+);
+const ARTICLE = "2025 Wimbledon Championships – Men's singles";
+
+function roundOrThrow(rounds: FetchedRound[], name: string): FetchedRound {
+  const round = rounds.find((r) => r.roundName === name);
+  if (!round) throw new Error(`round ${name} missing`);
+  return round;
+}
+
+describe("parsePlayerCell", () => {
+  it("extracts name + wikilink target and detects the bolded winner", () => {
+    const cell = parsePlayerCell("'''{{flagicon|ITA}} [[Jannik Sinner]]'''");
+    expect(cell).toEqual({
+      player: { name: "Jannik Sinner", externalId: "Jannik Sinner", seed: null },
+      isWinner: true,
+    });
+  });
+
+  it("treats a non-bolded slot as a loser", () => {
+    const cell = parsePlayerCell("{{flagicon|USA}} [[Ben Shelton]]");
+    expect(cell?.isWinner).toBe(false);
+    expect(cell?.player.name).toBe("Ben Shelton");
+  });
+
+  it("handles piped wikilinks (qualifier disambiguation)", () => {
+    const cell = parsePlayerCell("{{flagicon|FRA}} [[Arthur Fils (tennis)|Arthur Fils]]");
+    expect(cell?.player.name).toBe("Arthur Fils");
+    expect(cell?.player.externalId).toBe("Arthur Fils (tennis)");
+  });
+
+  it("parses a player whose cell is wrapped in {{nowrap}} (long names)", () => {
+    const loser = parsePlayerCell(
+      "{{nowrap|{{flagicon|ESP}} [[Alejandro Davidovich Fokina|A Davidovich Fokina]]}}",
+    );
+    expect(loser?.player.externalId).toBe("Alejandro Davidovich Fokina");
+    expect(loser?.player.name).toBe("A Davidovich Fokina");
+    expect(loser?.isWinner).toBe(false);
+
+    const winner = parsePlayerCell(
+      "'''{{nowrap|{{flagicon|ARG}} [[Juan Manuel Cerúndolo|JM Cerúndolo]]}}'''",
+    );
+    expect(winner?.player.externalId).toBe("Juan Manuel Cerúndolo");
+    expect(winner?.isWinner).toBe(true);
+  });
+
+  it("returns null for empty, Bye, and not-yet-determined placeholder slots", () => {
+    expect(parsePlayerCell("")).toBeNull();
+    expect(parsePlayerCell("Bye")).toBeNull();
+    expect(parsePlayerCell("Qualifier")).toBeNull();
+    expect(parsePlayerCell("{{flagicon|GBR}} Qualifier")).toBeNull();
+    expect(parsePlayerCell("TBD")).toBeNull();
+  });
+});
+
+describe("parseTemplateParams", () => {
+  it("splits on top-level pipes only, preserving piped links and templates", () => {
+    const params = parseTemplateParams(
+      "RD1-team1={{flagicon|ITA}} [[A B|A]]|RD1-seed1=1|RD1-score1-1=6",
+    );
+    expect(params.get("RD1-team1")).toBe("{{flagicon|ITA}} [[A B|A]]");
+    expect(params.get("RD1-seed1")).toBe("1");
+    expect(params.get("RD1-score1-1")).toBe("6");
+  });
+});
+
+describe("extractTemplates", () => {
+  it("finds the 8 section brackets and 1 finals bracket", () => {
+    expect(extractTemplates(FIXTURE, ["16TeamBracket"]).length).toBe(8);
+    expect(extractTemplates(FIXTURE, ["8TeamBracket"]).length).toBe(1);
+  });
+});
+
+describe("parseTennisDrawWikitext (2025 Wimbledon men's singles)", () => {
+  const draw = parseTennisDrawWikitext(FIXTURE, ARTICLE);
+
+  it("maps to the tennis_128 template", () => {
+    expect(draw.templateId).toBe("tennis_128");
+  });
+
+  it("produces the full 127-match draw with correct per-round counts", () => {
+    const byRound = Object.fromEntries(draw.rounds.map((r) => [r.roundName, r.matches.length]));
+    expect(byRound).toEqual({
+      "Round of 128": 64,
+      "Round of 64": 32,
+      "Round of 32": 16,
+      "Round of 16": 8,
+      Quarterfinals: 4,
+      Semifinals: 2,
+      Final: 1,
+    });
+    const total = draw.rounds.reduce((sum, r) => sum + r.matches.length, 0);
+    expect(total).toBe(127);
+  });
+
+  it("populates both players in section rounds (not just the finals bracket)", () => {
+    const r128 = roundOrThrow(draw.rounds, "Round of 128");
+    // A full 128 draw has no byes — every R128 slot is filled.
+    const populated = r128.matches.filter((m) => m.player1 && m.player2);
+    expect(populated.length).toBe(64);
+    // Section brackets abbreviate display names ("J Sinner") but the wikilink
+    // target stays the full name — so externalId is the reliable key.
+    const sinnerMatch = r128.matches.find(
+      (m) => m.player1?.externalId === "Jannik Sinner" || m.player2?.externalId === "Jannik Sinner",
+    );
+    expect(sinnerMatch).toBeDefined();
+    const sinner =
+      sinnerMatch?.player1?.externalId === "Jannik Sinner"
+        ? sinnerMatch?.player1
+        : sinnerMatch?.player2;
+    expect(sinner?.name).toBe("J Sinner");
+    expect(sinner?.seed).toBe(1);
+  });
+
+  it("identifies Sinner as the champion (won the Final)", () => {
+    const final = roundOrThrow(draw.rounds, "Final").matches[0];
+    const winner = final.winner === 1 ? final.player1 : final.player2;
+    expect(winner?.name).toBe("Jannik Sinner");
+  });
+
+  it("gives every match a unique externalMatchId", () => {
+    const ids = draw.rounds.flatMap((r) => r.matches.map((m) => m.externalMatchId));
+    expect(new Set(ids).size).toBe(ids.length);
+  });
+
+  it("records seeds for the 32 seeded players in round 1", () => {
+    const r128 = roundOrThrow(draw.rounds, "Round of 128");
+    const seeded = r128.matches
+      .flatMap((m) => [m.player1, m.player2])
+      .filter((p) => typeof p?.seed === "number");
+    expect(seeded.length).toBe(32);
+  });
+});
+
+describe("articleTitleFromInput", () => {
+  it("extracts the title from a pasted Wikipedia URL", () => {
+    expect(
+      articleTitleFromInput(
+        "https://en.wikipedia.org/wiki/2025_Wimbledon_Championships_%E2%80%93_Men%27s_singles",
+      ),
+    ).toBe("2025 Wimbledon Championships – Men's singles");
+  });
+
+  it("strips query strings and fragments", () => {
+    expect(articleTitleFromInput("https://en.wikipedia.org/wiki/French_Open?action=raw#Draw")).toBe(
+      "French Open",
+    );
+  });
+
+  it("passes a plain title through unchanged", () => {
+    expect(articleTitleFromInput("  2025 US Open – Men's singles  ")).toBe(
+      "2025 US Open – Men's singles",
+    );
+  });
+});
+
+describe("slugifyArticle", () => {
+  it("produces an id-safe slug and strips diacritics", () => {
+    expect(slugifyArticle(ARTICLE)).toBe("2025-wimbledon-championships-men-s-singles");
+  });
+});

app/services/match-sync/index.ts

@@ -1,15 +1,46 @@
 import { database } from "~/database/context";
 import { eq } from "drizzle-orm";
 import * as schema from "~/database/schema";
-import { findParticipantsBySportsSeasonId, updateParticipant } from "~/models/season-participant";
+import {
+  findParticipantsBySportsSeasonId,
+  updateParticipant,
+  createParticipant,
+  createManyParticipants,
+} from "~/models/season-participant";
 import { upsertSeasonMatchBulk, upsertMatchSubGame } from "~/models/season-match";
-import { setMatchWinner, updatePlayoffMatch, advanceWinnerTemplate, findPlayoffMatchesByEventId, doesLoserAdvance } from "~/models/playoff-match";
-import { processMatchResult, autoCompleteRoundIfDone } from "~/models/scoring-calculator";
-import { findMatchingTeamName } from "~/lib/normalize-team-name";
+import {
+  setMatchWinner,
+  updatePlayoffMatch,
+  advanceWinnerTemplate,
+  findPlayoffMatchesByEventId,
+  doesLoserAdvance,
+  populateBracketFromDraw,
+} from "~/models/playoff-match";
+import {
+  processMatchResult,
+  autoCompleteRoundIfDone,
+  processQualifyingBracketEvent,
+  recalculateAffectedLeagues,
+} from "~/models/scoring-calculator";
+import { fanOutMajorIfPrimary } from "~/services/sync-tournament-results";
+import { recalculateParticipantQP } from "~/models/qualifying-points";
+import { getScoringEventById, updateScoringEvent, isReadOnlySibling } from "~/models/scoring-event";
+import { findMatchingTeamName, normalizeTeamName } from "~/lib/normalize-team-name";
+import { buildUnmatchedTeamResolutionView } from "~/lib/unmatched-team-reconciliation";
 import { getBracketTemplate } from "~/lib/bracket-templates";
 import { PandaScoreMatchSyncAdapter } from "./pandascore";
 import { EspnScheduleAdapter } from "./espn-schedule";
-import type { MatchSyncAdapter, MatchSyncResult } from "./types";
+import { WikipediaTennisAdapter } from "./wikipedia-tennis";
+import { playerKey, canonicalPlayerName, buildResolvedMatches } from "./tennis-draw-mapping";
+import type {
+  MatchSyncAdapter,
+  MatchSyncResult,
+  DrawSyncAdapter,
+  DrawSyncResult,
+  DrawSyncPreview,
+  FetchedDraw,
+  FetchedPlayer,
+} from "./types";
 import { logger } from "~/lib/logger";
 
 function getMatchSyncAdapter(simulatorType: string): MatchSyncAdapter {
@@ -269,3 +300,336 @@ export async function syncMatches(sportsSeasonId: string): Promise<MatchSyncResu
 
   return { swissCreated, swissUpdated, playoffUpdated, unmatchedTeams, errors };
 }
+
+// ===========================================================================
+// Tennis Grand Slam draw sync
+// ===========================================================================
+
+function getDrawAdapter(simulatorType: string): DrawSyncAdapter {
+  switch (simulatorType) {
+    case "tennis_qualifying_points":
+      return new WikipediaTennisAdapter();
+    default:
+      throw new Error(
+        `No draw sync adapter available for simulator type "${simulatorType}". ` +
+          "Tennis is currently supported.",
+      );
+  }
+}
+
+/** Validate the event, fetch + parse its draw. Read-only — used by sync & preview. */
+async function loadTennisDraw(eventId: string) {
+  const db = database();
+  const event = await getScoringEventById(eventId);
+  if (!event) throw new Error(`Scoring event ${eventId} not found`);
+  if (isReadOnlySibling(event)) {
+    throw new Error(
+      "This event is a read-only window of a shared major. Sync the draw on the primary window; " +
+        "results fan out here automatically.",
+    );
+  }
+  if (!event.isQualifyingEvent) {
+    throw new Error(`Event "${event.name}" is not a qualifying event; cannot sync a tennis draw.`);
+  }
+  const sourceKey = event.externalSourceKey;
+  if (!sourceKey) {
+    throw new Error(
+      `Event "${event.name}" has no externalSourceKey (Wikipedia article title) configured.`,
+    );
+  }
+  const sportsSeason = await db.query.sportsSeasons.findFirst({
+    where: eq(schema.sportsSeasons.id, event.sportsSeasonId),
+    with: { sport: true },
+  });
+  const simulatorType = sportsSeason?.sport?.simulatorType;
+  if (!simulatorType) {
+    throw new Error(`Sport for season ${event.sportsSeasonId} has no simulator type configured`);
+  }
+  const draw = await getDrawAdapter(simulatorType).fetchDraw(sourceKey);
+  const template = getBracketTemplate(draw.templateId);
+  if (!template) throw new Error(`Bracket template "${draw.templateId}" not found`);
+  return { event, sportsSeasonId: event.sportsSeasonId, draw, template };
+}
+
+/** Distinct players across the whole draw, keyed by stable identity. */
+function collectUniquePlayers(draw: FetchedDraw): Map<string, FetchedPlayer> {
+  const players = new Map<string, FetchedPlayer>();
+  for (const round of draw.rounds) {
+    for (const match of round.matches) {
+      for (const player of [match.player1, match.player2]) {
+        if (player) players.set(playerKey(player), player);
+      }
+    }
+  }
+  return players;
+}
+
+type SeasonParticipant = Awaited<ReturnType<typeof findParticipantsBySportsSeasonId>>[number];
+
+type PlayerLookups = {
+  byExternalId: Map<string, SeasonParticipant>;
+  byName: Map<string, SeasonParticipant>;
+  names: string[];
+  recon: { id: string; name: string; externalId: string | null }[];
+};
+
+function buildLookups(participants: SeasonParticipant[]): PlayerLookups {
+  return {
+    byExternalId: new Map(
+      participants.filter((p) => p.externalId).map((p) => [p.externalId as string, p]),
+    ),
+    byName: new Map(participants.map((p) => [p.name, p])),
+    names: participants.map((p) => p.name),
+    recon: participants.map((p) => ({ id: p.id, name: p.name, externalId: p.externalId })),
+  };
+}
+
+type Classification =
+  | { kind: "matched"; participant: SeasonParticipant; backfill: boolean }
+  | {
+      kind: "create";
+      name: string;
+      suggestion: string | null;
+      suggestionId: string | null;
+    };
+
+/** Read-only: decide how a drawn player resolves against existing participants. */
+function classifyPlayer(player: FetchedPlayer, lk: PlayerLookups): Classification {
+  const name = canonicalPlayerName(player);
+  const byId = player.externalId ? lk.byExternalId.get(player.externalId) : undefined;
+  if (byId) return { kind: "matched", participant: byId, backfill: false };
+
+  const matchedName = findMatchingTeamName(name, lk.names);
+  if (matchedName) {
+    const p = lk.byName.get(matchedName);
+    if (p) return { kind: "matched", participant: p, backfill: !p.externalId && !!player.externalId };
+  }
+
+  // No confident match. Surface the closest existing participant (if any) as a
+  // possible duplicate to review.
+  const view = buildUnmatchedTeamResolutionView(name, lk.recon);
+  const top = view.confidence !== "none" ? view.topCandidates[0] ?? null : null;
+  return {
+    kind: "create",
+    name,
+    suggestion: top?.participantName ?? null,
+    suggestionId: top?.participantId ?? null,
+  };
+}
+
+/**
+ * Dry run: report what a draw sync would do (matches, would-be participant
+ * creations, likely duplicates, unfilled first-round slots) without any writes.
+ */
+export async function previewTennisDraw(eventId: string): Promise<DrawSyncPreview> {
+  const { event, sportsSeasonId, draw } = await loadTennisDraw(eventId);
+  const participants = await findParticipantsBySportsSeasonId(sportsSeasonId);
+  const lk = buildLookups(participants);
+  const uniquePlayers = collectUniquePlayers(draw);
+
+  let matched = 0;
+  const willCreate: DrawSyncPreview["willCreate"] = [];
+  const possibleDuplicates: DrawSyncPreview["possibleDuplicates"] = [];
+
+  for (const player of uniquePlayers.values()) {
+    const c = classifyPlayer(player, lk);
+    if (c.kind === "matched") {
+      matched++;
+    } else {
+      willCreate.push({ name: c.name, externalId: player.externalId });
+      if (c.suggestion && c.suggestionId) {
+        possibleDuplicates.push({
+          name: c.name,
+          externalId: player.externalId,
+          suggestion: c.suggestion,
+          suggestionId: c.suggestionId,
+        });
+      }
+    }
+  }
+
+  const firstRound = draw.rounds[0];
+  const tbdFirstRound = firstRound
+    ? firstRound.matches.reduce((n, m) => n + (m.player1 ? 0 : 1) + (m.player2 ? 0 : 1), 0)
+    : 0;
+  const allMatches = draw.rounds.flatMap((r) => r.matches);
+
+  return {
+    article: event.externalSourceKey ?? "",
+    totalPlayers: uniquePlayers.size,
+    matched,
+    willCreate,
+    possibleDuplicates,
+    tbdFirstRound,
+    totalMatches: allMatches.length,
+    completedMatches: allMatches.filter((m) => m.winner !== null).length,
+  };
+}
+
+/**
+ * Populate and auto-score a tennis major's bracket from its external draw
+ * (Wikipedia). Resolves every drawn player to a participant — matching by
+ * external id, then name, else auto-creating — propagates new participants to
+ * every sports season linked to the same tournament (so result fan-out lands),
+ * writes the full bracket, and runs the qualifying-points scorer.
+ *
+ * Runs only on a major's primary window; read-only siblings receive results via
+ * fan-out, not direct scoring.
+ */
+export async function syncTennisDraw(eventId: string): Promise<DrawSyncResult> {
+  const db = database();
+
+  const { event, sportsSeasonId, draw, template } = await loadTennisDraw(eventId);
+  const roundIsScoring = new Map(template.rounds.map((r) => [r.name, r.isScoring]));
+
+  // ---- Resolve players → participants (primary season) ----------------------
+  const participants = await findParticipantsBySportsSeasonId(sportsSeasonId);
+  const lk = buildLookups(participants);
+  const uniquePlayers = collectUniquePlayers(draw);
+
+  const keyToParticipantId = new Map<string, string>();
+  const resolvedParticipants = new Map<
+    string,
+    { canonicalId: string | null; name: string; externalId: string | null }
+  >();
+  const unmatched: DrawSyncResult["unmatched"] = [];
+  let participantsCreated = 0;
+
+  for (const [key, player] of uniquePlayers) {
+    const c = classifyPlayer(player, lk);
+    let participant: SeasonParticipant;
+
+    if (c.kind === "matched") {
+      participant = c.participant;
+      if (c.backfill && player.externalId) {
+        await updateParticipant(participant.id, { externalId: player.externalId });
+      }
+    } else {
+      // No confident match → auto-create so the bracket is complete; flag a
+      // likely duplicate for admin review when it resembles an existing player.
+      if (c.suggestion) unmatched.push({ name: c.name, externalId: player.externalId });
+      participant = await createParticipant({
+        sportsSeasonId,
+        name: c.name,
+        externalId: player.externalId ?? null,
+      });
+      lk.names.push(participant.name);
+      lk.byName.set(participant.name, participant);
+      lk.recon.push({ id: participant.id, name: participant.name, externalId: participant.externalId });
+      if (participant.externalId) lk.byExternalId.set(participant.externalId, participant);
+      participantsCreated++;
+    }
+
+    keyToParticipantId.set(key, participant.id);
+    resolvedParticipants.set(key, {
+      canonicalId: participant.participantId ?? null,
+      name: participant.name,
+      externalId: participant.externalId ?? null,
+    });
+  }
+
+  // ---- Propagate participants to linked sibling seasons ---------------------
+  if (event.tournamentId) {
+    const linkedRows = await db
+      .select({ sportsSeasonId: schema.scoringEvents.sportsSeasonId })
+      .from(schema.scoringEvents)
+      .where(eq(schema.scoringEvents.tournamentId, event.tournamentId));
+    const linkedSeasonIds = [...new Set(linkedRows.map((r) => r.sportsSeasonId))].filter(
+      (id) => id !== sportsSeasonId,
+    );
+
+    // Dedupe by canonical participant: two drawn players can fuzzy-match the same
+    // existing participant, which would otherwise queue duplicate sibling inserts
+    // and trip the (sportsSeasonId, name) unique index.
+    const resolved = [
+      ...new Map(
+        [...resolvedParticipants.values()]
+          .filter((r) => r.canonicalId)
+          .map((r) => [r.canonicalId, r]),
+      ).values(),
+    ];
+
+    for (const seasonId of linkedSeasonIds) {
+      const sib = await findParticipantsBySportsSeasonId(seasonId);
+      const sibCanon = new Set(sib.map((s) => s.participantId).filter(Boolean));
+      const sibNames = new Set(sib.map((s) => normalizeTeamName(s.name)));
+
+      const toCreate = resolved
+        .filter(
+          (r) =>
+            r.canonicalId &&
+            !sibCanon.has(r.canonicalId) &&
+            !sibNames.has(normalizeTeamName(r.name)),
+        )
+        .map((r) => ({
+          sportsSeasonId: seasonId,
+          name: r.name,
+          externalId: r.externalId,
+          participantId: r.canonicalId,
+        }));
+
+      if (toCreate.length > 0) {
+        await createManyParticipants(toCreate);
+        participantsCreated += toCreate.length;
+      }
+    }
+  }
+
+  // ---- Write the bracket ----------------------------------------------------
+  const resolvedMatches = buildResolvedMatches(draw, keyToParticipantId, roundIsScoring);
+
+  // Ensure the event is configured for QP bracket scoring before populating.
+  if (
+    event.bracketTemplateId !== draw.templateId ||
+    event.scoringStartsAtRound !== template.scoringStartsAtRound
+  ) {
+    await updateScoringEvent(eventId, {
+      bracketTemplateId: draw.templateId,
+      scoringStartsAtRound: template.scoringStartsAtRound,
+    });
+  }
+
+  const { written, completed } = await populateBracketFromDraw(eventId, resolvedMatches);
+
+  // ---- Score (qualifying points) + fan out to siblings ----------------------
+  // The tennis bracket is the sole QP source for its event, so reconcile stale
+  // rows: snapshot existing result rows, clear them, re-derive from the bracket,
+  // then recalc QP totals for any participant who no longer earns points (e.g.
+  // early-round losers — only Round of 16+ losers score). writeEventResultsQP
+  // upserts but never deletes, so without this a previously mis-scored player
+  // would keep phantom QP across re-syncs.
+  //
+  // Wrapped in a transaction so a mid-rescore failure can't leave the event with
+  // its results deleted and not rebuilt. NOTE: this clears ALL event_results for
+  // the event, including any manually-entered rows (e.g. a notParticipating
+  // withdrawal) — acceptable because the synced draw is authoritative for tennis.
+  await db.transaction(async (tx) => {
+    const beforeRows = await tx
+      .select({ pid: schema.eventResults.seasonParticipantId })
+      .from(schema.eventResults)
+      .where(eq(schema.eventResults.scoringEventId, eventId));
+    await tx.delete(schema.eventResults).where(eq(schema.eventResults.scoringEventId, eventId));
+
+    await processQualifyingBracketEvent(eventId, tx);
+
+    const afterRows = await tx
+      .select({ pid: schema.eventResults.seasonParticipantId })
+      .from(schema.eventResults)
+      .where(eq(schema.eventResults.scoringEventId, eventId));
+    const afterIds = new Set(afterRows.map((r) => r.pid));
+    for (const { pid } of beforeRows) {
+      if (!afterIds.has(pid)) await recalculateParticipantQP(pid, sportsSeasonId, tx);
+    }
+  });
+
+  await recalculateAffectedLeagues(sportsSeasonId, db, {
+    eventId,
+    eventName: event.name ?? undefined,
+  });
+  await fanOutMajorIfPrimary(
+    { id: event.id, isPrimary: event.isPrimary, tournamentId: event.tournamentId },
+    { markComplete: false },
+  );
+
+  return { matchesWritten: written, completed, participantsCreated, unmatched };
+}

app/services/match-sync/tennis-draw-mapping.ts

@@ -0,0 +1,63 @@
+/**
+ * Pure (DB-free) mapping helpers for tennis draw sync, separated so the
+ * scoring-critical logic — winner/loser assignment and which rounds score — can
+ * be unit-tested without a database.
+ */
+import { normalizeTeamName } from "~/lib/normalize-team-name";
+import type { ResolvedDrawMatch } from "~/models/playoff-match";
+import type { FetchedDraw, FetchedPlayer } from "./types";
+
+/** Stable identity key for a drawn player (prefer the source's external id). */
+export function playerKey(p: FetchedPlayer): string {
+  return p.externalId ? `id:${p.externalId}` : `name:${normalizeTeamName(p.name)}`;
+}
+
+/**
+ * Canonical participant name for a drawn player. Section brackets abbreviate the
+ * display name ("J Sinner"); the wikilink target (externalId) is the full name,
+ * so prefer it. Strips the trailing Wikipedia disambiguator (e.g. "Arthur Fils
+ * (tennis)" → "Arthur Fils") so the stored name and fuzzy matching use the plain
+ * name — the raw externalId (with the disambiguator) is kept as the stable key.
+ */
+export function canonicalPlayerName(p: FetchedPlayer): string {
+  return (p.externalId ?? p.name).replace(/\s*\([^)]*\)\s*$/, "").trim();
+}
+
+/**
+ * Turn a fetched draw into bracket rows with participants/winner resolved to ids.
+ * `winnerId`/`loserId` are set only when both players resolved and the source
+ * reported a winner. `isScoring` comes from the bracket template's round config.
+ */
+export function buildResolvedMatches(
+  draw: FetchedDraw,
+  keyToParticipantId: Map<string, string>,
+  roundIsScoring: Map<string, boolean>,
+): ResolvedDrawMatch[] {
+  const resolved: ResolvedDrawMatch[] = [];
+  for (const round of draw.rounds) {
+    for (const m of round.matches) {
+      const p1 = m.player1 ? keyToParticipantId.get(playerKey(m.player1)) ?? null : null;
+      const p2 = m.player2 ? keyToParticipantId.get(playerKey(m.player2)) ?? null : null;
+      let winnerId: string | null = null;
+      let loserId: string | null = null;
+      if (m.winner === 1) {
+        winnerId = p1;
+        loserId = p2;
+      } else if (m.winner === 2) {
+        winnerId = p2;
+        loserId = p1;
+      }
+      resolved.push({
+        externalMatchId: m.externalMatchId,
+        round: m.round,
+        matchNumber: m.matchNumber,
+        participant1Id: p1,
+        participant2Id: p2,
+        winnerId,
+        loserId,
+        isScoring: roundIsScoring.get(m.round) ?? false,
+      });
+    }
+  }
+  return resolved;
+}

app/services/match-sync/types.ts

@@ -42,3 +42,103 @@ export interface MatchSyncResult {
   unmatchedTeams: { externalId: string; name: string }[];
   errors: { externalMatchId: string; error: string }[];
 }
+
+// ---------------------------------------------------------------------------
+// Tennis Grand Slam draw sync
+//
+// Unlike the team-sport `MatchSyncAdapter` (result-only updates on a
+// pre-existing bracket), a tennis major must be populated from an empty draw:
+// 128 players, scaffolded across all 7 rounds, with winners auto-scored as the
+// source reports them. `DrawSyncAdapter` returns the full draw; `syncTennisDraw`
+// (index.ts) auto-creates/links participants, builds the bracket, propagates
+// participants to linked sibling seasons, and runs the qualifying-points scorer.
+// ---------------------------------------------------------------------------
+
+/** A competitor in a fetched draw match, as seen by the external source. */
+export interface FetchedPlayer {
+  /** Display name, e.g. "Jannik Sinner". */
+  name: string;
+  /**
+   * Stable source identifier, the primary key against
+   * `seasonParticipants.externalId`. For Wikipedia this is the article link
+   * target (stable across years). Null when the source gives only plain text
+   * (e.g. a qualifier with no article).
+   */
+  externalId: string | null;
+  /** Tournament seed, if seeded. */
+  seed: number | null;
+}
+
+/** A single fetched draw match. */
+export interface FetchedDrawMatch {
+  /** Stable, source-derived id, e.g. "wimbledon-2025-ms-Round-of-16-m03". */
+  externalMatchId: string;
+  /** Template round name, e.g. "Round of 128" … "Final". */
+  round: string;
+  /** 1-based position within the round (cosmetic ordering only). */
+  matchNumber: number;
+  player1: FetchedPlayer | null;
+  player2: FetchedPlayer | null;
+  /** Which slot won; null while undrawn or not yet completed. */
+  winner: 1 | 2 | null;
+}
+
+export interface FetchedRound {
+  /** Template round name. */
+  roundName: string;
+  matches: FetchedDrawMatch[];
+}
+
+/** A complete (or partially-completed) knockout draw. */
+export interface FetchedDraw {
+  /** Bracket template this draw maps onto, e.g. "tennis_128". */
+  templateId: string;
+  /** Ordered earliest → latest round (Round of 128 → Final). */
+  rounds: FetchedRound[];
+}
+
+/** Adapter that fetches a knockout draw from an external source. */
+export interface DrawSyncAdapter {
+  /** @param sourceKey provider locator (Wikipedia article title, etc.). */
+  fetchDraw(sourceKey: string): Promise<FetchedDraw>;
+}
+
+/** A drawn player that couldn't be confidently auto-resolved to a participant. */
+export interface UnmatchedPlayer {
+  name: string;
+  externalId: string | null;
+}
+
+export interface DrawSyncResult {
+  /** Matches inserted or updated in the bracket. */
+  matchesWritten: number;
+  /** Of those, how many carried a completed result this sync. */
+  completed: number;
+  /** New participants auto-created (across all linked seasons). */
+  participantsCreated: number;
+  /** Ambiguous players queued for admin reconciliation rather than guessed. */
+  unmatched: UnmatchedPlayer[];
+}
+
+/** Read-only preview of what a draw sync would do, with no DB writes. */
+export interface DrawSyncPreview {
+  /** Resolved Wikipedia article title. */
+  article: string;
+  totalPlayers: number;
+  /** Players that resolve to an existing participant. */
+  matched: number;
+  /** Players that would be auto-created. */
+  willCreate: UnmatchedPlayer[];
+  /** Of those, ones that resemble an existing participant (likely duplicates). */
+  possibleDuplicates: {
+    name: string;
+    externalId: string | null;
+    /** Existing participant this resembles. */
+    suggestion: string;
+    suggestionId: string;
+  }[];
+  /** Unfilled slots in the first round (e.g. a qualifier not yet drawn). */
+  tbdFirstRound: number;
+  totalMatches: number;
+  completedMatches: number;
+}

app/services/match-sync/wikipedia-tennis.ts

@@ -0,0 +1,307 @@
+/**
+ * Wikipedia tennis Grand Slam draw adapter.
+ *
+ * Source of truth: the singles-draw article (e.g.
+ * "2025 Wimbledon Championships – Men's singles"), whose full bracket is encoded
+ * as MediaWiki bracket templates:
+ *   - eight `{{16TeamBracket-Compact-Tennis5}}` sections (Round of 128 → Round
+ *     of 16), 16 players each = 128, and
+ *   - one `{{8TeamBracket-Tennis5}}` finals bracket (Quarterfinals → Final).
+ * (`-Tennis3` best-of-3 variants render women's draws identically for our needs.)
+ *
+ * The winner of each match is the slot whose `team` value is bolded (`'''…'''`)
+ * — losers are never bolded — which lets us derive winner/loser without parsing
+ * set scores. Player names come from `[[wikilinks]]`, whose target is a stable
+ * cross-year id used to match `seasonParticipants.externalId`.
+ *
+ * Parsing is split out (pure functions) so it can be unit-tested against a saved
+ * wikitext fixture without network access.
+ */
+import type {
+  DrawSyncAdapter,
+  FetchedDraw,
+  FetchedDrawMatch,
+  FetchedPlayer,
+  FetchedRound,
+} from "./types";
+
+const WIKIPEDIA_API = "https://en.wikipedia.org/w/api.php";
+const CONTACT = process.env.WIKIPEDIA_CONTACT_EMAIL ?? "admin@brackt.com";
+const USER_AGENT = `Brackt.com tennis draw sync - ${CONTACT}`;
+
+/** Round names for a 16-player draw section, earliest → latest. */
+const SECTION_ROUNDS = ["Round of 128", "Round of 64", "Round of 32", "Round of 16"] as const;
+/** Round names for the 8-player finals bracket, earliest → latest. */
+const FINALS_ROUNDS = ["Quarterfinals", "Semifinals", "Final"] as const;
+
+/**
+ * Accept either a plain article title or a pasted Wikipedia URL and return the
+ * article title. URLs like
+ * `https://en.wikipedia.org/wiki/2025_Wimbledon_Championships_%E2%80%93_Men%27s_singles`
+ * become "2025 Wimbledon Championships – Men's singles".
+ */
+export function articleTitleFromInput(input: string): string {
+  const trimmed = input.trim();
+  const match = trimmed.match(/\/wiki\/([^?#]+)/);
+  if (!match) return trimmed;
+  let title = match[1];
+  try {
+    title = decodeURIComponent(title);
+  } catch {
+    // leave as-is if it isn't valid percent-encoding
+  }
+  return title.replace(/_/g, " ").trim();
+}
+
+/** Turn an article title into a stable, id-safe slug. */
+export function slugifyArticle(title: string): string {
+  return title
+    .normalize("NFKD")
+    .replace(/[̀-ͯ]/g, "") // strip combining diacritics
+    .toLowerCase()
+    .replace(/[^a-z0-9]+/g, "-")
+    .replace(/^-+|-+$/g, "");
+}
+
+/**
+ * Scan wikitext for `{{<TemplateName>...}}` invocations, returning each body
+ * (text between the outer braces) with balanced-brace handling so nested
+ * templates like `{{flagicon|ITA}}` don't terminate the capture early.
+ */
+export function extractTemplates(wikitext: string, namePrefixes: string[]): { name: string; body: string }[] {
+  const results: { name: string; body: string }[] = [];
+  for (let i = 0; i < wikitext.length - 1; i++) {
+    if (wikitext[i] !== "{" || wikitext[i + 1] !== "{") continue;
+    const afterBraces = wikitext.slice(i + 2);
+    const match = afterBraces.match(/^\s*([A-Za-z0-9 _-]+)/);
+    const name = match?.[1]?.trim() ?? "";
+    if (!namePrefixes.some((p) => name.startsWith(p))) continue;
+
+    // Walk forward tracking {{ }} depth to find the matching close.
+    let depth = 0;
+    let j = i;
+    for (; j < wikitext.length - 1; j++) {
+      if (wikitext[j] === "{" && wikitext[j + 1] === "{") {
+        depth++;
+        j++;
+      } else if (wikitext[j] === "}" && wikitext[j + 1] === "}") {
+        depth--;
+        j++;
+        if (depth === 0) break;
+      }
+    }
+    const body = wikitext.slice(i + 2, j - 1);
+    results.push({ name, body });
+    i = j; // continue past this template
+  }
+  return results;
+}
+
+/**
+ * Split a template body into `key=value` params on top-level `|` only —
+ * pipes inside `{{…}}` or `[[…]]` are part of a value (flag templates, piped
+ * wikilinks) and must not split.
+ */
+export function parseTemplateParams(body: string): Map<string, string> {
+  const params = new Map<string, string>();
+  let braceDepth = 0;
+  let linkDepth = 0;
+  let current = "";
+  const parts: string[] = [];
+
+  for (let i = 0; i < body.length; i++) {
+    const two = body.slice(i, i + 2);
+    if (two === "{{") { braceDepth++; current += two; i++; continue; }
+    if (two === "}}") { braceDepth--; current += two; i++; continue; }
+    if (two === "[[") { linkDepth++; current += two; i++; continue; }
+    if (two === "]]") { linkDepth--; current += two; i++; continue; }
+    if (body[i] === "|" && braceDepth === 0 && linkDepth === 0) {
+      parts.push(current);
+      current = "";
+      continue;
+    }
+    current += body[i];
+  }
+  parts.push(current);
+
+  for (const part of parts) {
+    const eq = part.indexOf("=");
+    if (eq === -1) continue;
+    const key = part.slice(0, eq).trim();
+    const value = part.slice(eq + 1).trim();
+    if (key) params.set(key, value);
+  }
+  return params;
+}
+
+/**
+ * Parse a bracket `team` value into a player + whether it won.
+ * Returns null for an empty/Bye slot.
+ */
+export function parsePlayerCell(value: string): { player: FetchedPlayer; isWinner: boolean } | null {
+  if (!value) return null;
+  // Winner detection: only the winning slot's name is bolded.
+  const isWinner = value.includes("'''");
+  let text = value.replace(/'''/g, "");
+
+  // Extract the wikilink FIRST, before stripping templates. A team cell may wrap
+  // the flag + link in a display template, e.g.
+  //   {{nowrap|{{flagicon|ESP}} [[Alejandro Davidovich Fokina|A Davidovich Fokina]]}}
+  // Blanket template-stripping would, after removing the inner {{flagicon}}, treat
+  // the outer {{nowrap| … [[link]] … }} as a single template and delete the link
+  // with it — yielding an empty cell (TBD). Pulling the link out first avoids that.
+  const linkMatch = text.match(/\[\[([^\]]+)\]\]/);
+  let name: string;
+  let externalId: string | null;
+  if (linkMatch) {
+    const [target, display] = linkMatch[1].split("|");
+    externalId = target.trim();
+    name = (display ?? target).trim();
+  } else {
+    // No link: unwrap display templates ({{nowrap|X}}) to their content, drop flag
+    // templates, and keep whatever plain text remains (e.g. an unlinked qualifier).
+    let prev: string;
+    do {
+      prev = text;
+      text = text.replace(/\{\{\s*(?:nowrap|nobr)\s*\|([^{}]*)\}\}/gi, "$1");
+    } while (text !== prev);
+    do {
+      prev = text;
+      text = text.replace(/\{\{[^{}]*\}\}/g, " ");
+    } while (text !== prev);
+    name = text.replace(/\[\[|\]\]/g, "").trim();
+    externalId = null;
+  }
+  name = name.replace(/\s+/g, " ").trim();
+  // Treat empty slots and not-yet-determined placeholders (an unfilled qualifier,
+  // a bye, a TBD feeder) as no player → the bracket shows TBD rather than
+  // inventing a shared "Qualifier" participant across many slots.
+  if (!name || /^(bye|tbd|qualifier|to be determined)$/i.test(name)) return null;
+  return { player: { name, externalId, seed: null }, isWinner };
+}
+
+/**
+ * Build matches for one round of a bracket. Within a round, consecutive slots
+ * pair up: (team1,team2)=match1, (team3,team4)=match2, …
+ */
+function parseRound(
+  params: Map<string, string>,
+  rdIndex: number,
+  roundName: string,
+  idPrefix: string,
+  matchNumberOffset: number,
+): FetchedDrawMatch[] {
+  // Collect team slot tokens present for this round, preserving the raw token
+  // (slots are zero-padded in the compact section brackets, e.g. "team01", but
+  // unpadded in the finals bracket, e.g. "team1"). Sort by numeric value.
+  const slots: string[] = [];
+  for (const key of params.keys()) {
+    const m = key.match(new RegExp(`^RD${rdIndex}-team(\\d+)$`));
+    if (m) slots.push(m[1]);
+  }
+  slots.sort((a, b) => Number(a) - Number(b));
+
+  const matches: FetchedDrawMatch[] = [];
+  for (let p = 0; p < slots.length; p += 2) {
+    const slot1 = slots[p];
+    const slot2 = slots[p + 1];
+    const cell1 = parsePlayerCell(params.get(`RD${rdIndex}-team${slot1}`) ?? "");
+    const cell2 = slot2 !== undefined ? parsePlayerCell(params.get(`RD${rdIndex}-team${slot2}`) ?? "") : null;
+
+    const seed1 = params.get(`RD${rdIndex}-seed${slot1}`);
+    const seed2 = slot2 !== undefined ? params.get(`RD${rdIndex}-seed${slot2}`) : undefined;
+    const player1 = cell1 ? { ...cell1.player, seed: parseSeed(seed1) } : null;
+    const player2 = cell2 ? { ...cell2.player, seed: parseSeed(seed2) } : null;
+
+    let winner: 1 | 2 | null = null;
+    if (cell1?.isWinner) winner = 1;
+    else if (cell2?.isWinner) winner = 2;
+
+    const matchNumber = matchNumberOffset + matches.length + 1;
+    matches.push({
+      externalMatchId: `${idPrefix}:${roundName.replace(/\s+/g, "-")}:m${matchNumber}`,
+      round: roundName,
+      matchNumber,
+      player1,
+      player2,
+      winner,
+    });
+  }
+  return matches;
+}
+
+function parseSeed(raw: string | undefined): number | null {
+  if (!raw) return null;
+  const n = parseInt(raw.replace(/[^0-9]/g, ""), 10);
+  return Number.isFinite(n) ? n : null;
+}
+
+/**
+ * Parse a full Grand Slam singles draw article into a `FetchedDraw`.
+ * @param wikitext raw article wikitext
+ * @param articleTitle used to build stable match ids
+ */
+export function parseTennisDrawWikitext(wikitext: string, articleTitle: string): FetchedDraw {
+  const slug = slugifyArticle(articleTitle);
+  const sectionBrackets = extractTemplates(wikitext, ["16TeamBracket"]);
+  const finalsBrackets = extractTemplates(wikitext, ["8TeamBracket"]);
+
+  if (finalsBrackets.length !== 1 || sectionBrackets.length !== 8) {
+    throw new Error(
+      `Unexpected tennis draw layout in "${articleTitle}": found ${sectionBrackets.length} ` +
+        `16-team section bracket(s) and ${finalsBrackets.length} 8-team finals bracket(s); ` +
+        "expected 8 sections + 1 finals. Template variant may be unsupported.",
+    );
+  }
+
+  // Accumulate matches per round across all sections (section order is cosmetic).
+  const roundMatches = new Map<string, FetchedDrawMatch[]>();
+  const pushMatches = (round: string, ms: FetchedDrawMatch[]) => {
+    const existing = roundMatches.get(round) ?? [];
+    roundMatches.set(round, existing.concat(ms));
+  };
+
+  sectionBrackets.forEach((bracket, sectionIdx) => {
+    const params = parseTemplateParams(bracket.body);
+    SECTION_ROUNDS.forEach((roundName, rdIdx) => {
+      const offset = roundMatches.get(roundName)?.length ?? 0;
+      pushMatches(roundName, parseRound(params, rdIdx + 1, roundName, `${slug}:s${sectionIdx}`, offset));
+    });
+  });
+
+  const finalsParams = parseTemplateParams(finalsBrackets[0].body);
+  FINALS_ROUNDS.forEach((roundName, rdIdx) => {
+    pushMatches(roundName, parseRound(finalsParams, rdIdx + 1, roundName, `${slug}:f`, 0));
+  });
+
+  const orderedRoundNames = [...SECTION_ROUNDS, ...FINALS_ROUNDS];
+  const rounds: FetchedRound[] = orderedRoundNames.map((roundName) => ({
+    roundName,
+    matches: roundMatches.get(roundName) ?? [],
+  }));
+
+  return { templateId: "tennis_128", rounds };
+}
+
+export class WikipediaTennisAdapter implements DrawSyncAdapter {
+  async fetchDraw(sourceKey: string): Promise<FetchedDraw> {
+    const title = articleTitleFromInput(sourceKey);
+    const url = `${WIKIPEDIA_API}?action=parse&prop=wikitext&format=json&formatversion=2&redirects=1&page=${encodeURIComponent(title)}`;
+    const response = await fetch(url, { headers: { "User-Agent": USER_AGENT } });
+    if (!response.ok) {
+      throw new Error(`Wikipedia API returned ${response.status}: ${response.statusText}`);
+    }
+    const json = (await response.json()) as {
+      error?: { info?: string };
+      parse?: { wikitext?: string };
+    };
+    if (json.error) {
+      throw new Error(`Wikipedia API error for "${title}": ${json.error.info ?? "unknown error"}`);
+    }
+    const wikitext = json.parse?.wikitext;
+    if (!wikitext) {
+      throw new Error(`No wikitext returned for "${title}"`);
+    }
+    return parseTennisDrawWikitext(wikitext, title);
+  }
+}

database/schema.ts

@@ -641,6 +641,10 @@ export const scoringEvents = pgTable("scoring_events", {
   scoringStartsAtRound: varchar("scoring_starts_at_round", { length: 50 }), // "Elite Eight", "Quarterfinals", etc.
   // Per-event region config for NCAA-style brackets (overrides template defaults)
   bracketRegionConfig: jsonb("bracket_region_config"), // BracketRegion[] | null
+  // External data-source identifier for auto-populating this event from a feed.
+  // For Wikipedia tennis draws this is the article title, e.g.
+  // "2025 Wimbledon Championships – Men's singles". Null = no external source.
+  externalSourceKey: varchar("external_source_key", { length: 255 }),
   isComplete: boolean("is_complete").notNull().default(false),
   completedAt: timestamp("completed_at"),
   // For tournament-linked majors shared across windows: marks the single window

drizzle/0123_previous_expediter.sql

@@ -0,0 +1 @@
+ALTER TABLE "scoring_events" ADD COLUMN "external_source_key" varchar(255);

drizzle/meta/_journal.json

@@ -862,6 +862,13 @@
       "when": 1782103950846,
       "tag": "0122_soft_longshot",
       "breakpoints": true
+    },
+    {
+      "idx": 123,
+      "version": "7",
+      "when": 1782250520349,
+      "tag": "0123_previous_expediter",
+      "breakpoints": true
     }
   ]
 }