diff --git a/app/models/__tests__/scoring-calculator-qp-notify.test.ts b/app/models/__tests__/scoring-calculator-qp-notify.test.ts
index b5470d5..9547fb5 100644
--- a/app/models/__tests__/scoring-calculator-qp-notify.test.ts
+++ b/app/models/__tests__/scoring-calculator-qp-notify.test.ts
@@ -104,4 +104,40 @@ describe("processQualifyingEvent — QP change notification", () => {
 
     expect(notifyQualifyingPointsUpdate).not.toHaveBeenCalled();
   });
+
+  it("announces newly-eliminated players even when no QP changed (mirror non-scoring-round exit)", async () => {
+    // A mirror window re-scored on fan-out: nobody's QP changed, but the primary
+    // bracket reports p2 knocked out in a non-scoring round. The notification must
+    // still fire, passing the eliminated id through as the 5th arg so the "Knocked
+    // Out" section isn't dropped on the mirror.
+    const rows: ResultRow[] = [
+      { id: "r1", seasonParticipantId: "p1", placement: 1, qualifyingPointsAwarded: "100.00", scoringEvent },
+      { id: "r2", seasonParticipantId: "p2", placement: null, qualifyingPointsAwarded: "0.00", scoringEvent },
+    ];
+    const db = makeDb(rows, rows.map((r) => ({ ...r })));
+
+    await processQualifyingEvent(EVENT_ID, db, {
+      newlyEliminatedParticipantIds: new Set(["p2"]),
+    });
+
+    expect(notifyQualifyingPointsUpdate).toHaveBeenCalledTimes(1);
+    const [, , , changed, eliminated] = vi.mocked(notifyQualifyingPointsUpdate).mock.calls[0];
+    // No QP change this sync.
+    expect([...(changed as Set<string>)]).toEqual([]);
+    // The knocked-out player is forwarded to the notifier.
+    expect([...(eliminated as Set<string>)]).toEqual(["p2"]);
+  });
+
+  it("does not notify on a re-sync with no QP change and no eliminations", async () => {
+    const rows: ResultRow[] = [
+      { id: "r1", seasonParticipantId: "p1", placement: 1, qualifyingPointsAwarded: "100.00", scoringEvent },
+    ];
+    const db = makeDb(rows, rows.map((r) => ({ ...r })));
+
+    await processQualifyingEvent(EVENT_ID, db, {
+      newlyEliminatedParticipantIds: new Set(),
+    });
+
+    expect(notifyQualifyingPointsUpdate).not.toHaveBeenCalled();
+  });
 });
diff --git a/app/models/scoring-calculator.ts b/app/models/scoring-calculator.ts
index 2d2a834..ab0981a 100644
--- a/app/models/scoring-calculator.ts
+++ b/app/models/scoring-calculator.ts
@@ -880,6 +880,15 @@ export async function processQualifyingEvent(
      * which fall back to querying it here.
      */
     canonicalTieCountByPlacement?: Map<number, number>;
+    /**
+     * This window's season_participant ids that were knocked out this sync in a
+     * non-scoring round. They earn no QP (so they never surface via changed QP),
+     * but a manager who drafted them should still be told. Threaded down from the
+     * primary bracket by the fan-out (syncTournamentResults), already translated
+     * to THIS window's season_participant ids. See the primary path in
+     * app/services/match-sync/index.ts (newlyEliminatedIds).
+     */
+    newlyEliminatedParticipantIds?: Set<string>;
   } = {}
 ): Promise<void> {
   const db = providedDb || database();
@@ -1035,9 +1044,22 @@ export async function processQualifyingEvent(
     afterRows.map((r) => ({ id: r.seasonParticipantId, qp: r.qualifyingPointsAwarded }))
   );
 
-  if (changedParticipantIds.size > 0 && !options.skipNotifications) {
+  // Players knocked out this sync in a non-scoring round earn no QP, so they never
+  // appear in changedParticipantIds. Announce them too (mirroring the primary path
+  // in syncTennisDraw), so a mirror window's "Knocked Out" section isn't dropped.
+  const eliminatedIds = options.newlyEliminatedParticipantIds ?? new Set<string>();
+  if (
+    (changedParticipantIds.size > 0 || eliminatedIds.size > 0) &&
+    !options.skipNotifications
+  ) {
     try {
-      await notifyQualifyingPointsUpdate(event.sportsSeasonId, eventId, db, changedParticipantIds);
+      await notifyQualifyingPointsUpdate(
+        event.sportsSeasonId,
+        eventId,
+        db,
+        changedParticipantIds,
+        eliminatedIds,
+      );
     } catch (error) {
       logger.error(`[ScoringCalculator] QP Discord notification failed for event ${eventId}:`, error);
     }
diff --git a/app/services/__tests__/sync-tournament-results.test.ts b/app/services/__tests__/sync-tournament-results.test.ts
index 01bebfb..af97012 100644
--- a/app/services/__tests__/sync-tournament-results.test.ts
+++ b/app/services/__tests__/sync-tournament-results.test.ts
@@ -274,6 +274,12 @@ vi.mock("drizzle-orm", async () => {
     },
     // eslint-disable-next-line @typescript-eslint/no-explicit-any
     and: (...preds: any[]) => (row: any) => preds.every((p) => p(row)),
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    inArray: (col: any, vals: any[]) => {
+      const key = colKey(col);
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      return (row: any) => vals.includes(row[key]);
+    },
   };
 });
 
@@ -987,6 +993,80 @@ describe("syncMajorFromPrimaryEvent", () => {
     expect(tieMap.get(5)).toBe(4); // QF tier spans 4
   });
 
+  it("fans a non-scoring-round elimination out to each mirror window (translated to its own season_participant id)", async () => {
+    // The reported bug: a player knocked out in a non-scoring round earns no QP, so
+    // canonical promotion skips them (null placement) and the mirror can't detect the
+    // knockout locally. The primary passes its eliminated season_participant id
+    // (sp-PX) down; syncMajorFromPrimaryEvent must translate it to the canonical
+    // participant (cp-X) and each mirror window must re-translate to ITS own
+    // season_participant (sp-MX) before handing it to processQualifyingEvent.
+    const state = seedBasicState({
+      scoringEvents: [
+        { id: "ev-PRIMARY", sportsSeasonId: "ss-P", tournamentId: "t-1", name: "Wimbledon" },
+        { id: "ev-MIRROR", sportsSeasonId: "ss-M", tournamentId: "t-1", name: "Wimbledon" },
+      ],
+      seasonParticipants: [
+        // Placed finalist, present on both windows.
+        { id: "sp-PA", sportsSeasonId: "ss-P", participantId: "cp-A", name: "A" },
+        { id: "sp-MA", sportsSeasonId: "ss-M", participantId: "cp-A", name: "A" },
+        // Knocked-out player: different season_participant row per window, same
+        // canonical participant cp-X.
+        { id: "sp-PX", sportsSeasonId: "ss-P", participantId: "cp-X", name: "X" },
+        { id: "sp-MX", sportsSeasonId: "ss-M", participantId: "cp-X", name: "X" },
+      ],
+    });
+    const db = makeFakeDb(state);
+    vi.mocked(database).mockReturnValue(db as never);
+    vi.mocked(processQualifyingEvent).mockResolvedValue(undefined);
+    vi.mocked(completeScoringEvent).mockResolvedValue(undefined as never);
+    vi.mocked(recalculateAffectedLeagues).mockResolvedValue(undefined);
+
+    vi.mocked(getScoringEventById).mockResolvedValue({
+      id: "ev-PRIMARY",
+      sportsSeasonId: "ss-P",
+      tournamentId: "t-1",
+      name: "Wimbledon",
+    } as never);
+
+    // Primary derived results promote only the PLACED player. cp-X (the non-scoring
+    // loser) has no placement and is not promoted to canonical — exactly why the
+    // mirror needs the elimination threaded separately.
+    vi.mocked(getEventResults).mockResolvedValue([
+      {
+        placement: 1,
+        rawScore: "1",
+        notParticipating: false,
+        seasonParticipantId: "sp-PA",
+        seasonParticipant: { participantId: "cp-A" },
+      },
+    ] as never);
+
+    vi.mocked(upsertTournamentResult).mockImplementation(
+      async (data: { tournamentId: string; participantId: string; placement?: number | null; rawScore?: string | null }) => {
+        state.tournamentResults.push({
+          tournamentId: data.tournamentId,
+          participantId: data.participantId,
+          placement: data.placement ?? null,
+          rawScore: data.rawScore ?? null,
+        });
+        return data as never;
+      }
+    );
+
+    await syncMajorFromPrimaryEvent("ev-PRIMARY", {
+      newlyEliminatedParticipantIds: new Set(["sp-PX"]),
+    });
+
+    const mirrorCall = (processQualifyingEvent as Mock).mock.calls.find(
+      (c) => c[0] === "ev-MIRROR"
+    );
+    expect(mirrorCall).toBeDefined();
+    if (!mirrorCall) return;
+    const eliminated = mirrorCall[2].newlyEliminatedParticipantIds as Set<string>;
+    // cp-X → the MIRROR's own season_participant id, not the primary's.
+    expect([...eliminated]).toEqual(["sp-MX"]);
+  });
+
   it("throws when the primary event is not linked to a tournament", async () => {
     const db = makeFakeDb(seedBasicState());
     vi.mocked(database).mockReturnValue(db as never);
diff --git a/app/services/match-sync/index.ts b/app/services/match-sync/index.ts
index d52fff2..891739d 100644
--- a/app/services/match-sync/index.ts
+++ b/app/services/match-sync/index.ts
@@ -611,9 +611,16 @@ export async function syncTennisDraw(eventId: string): Promise<DrawSyncResult> {
     eventId,
     eventName: event.name ?? undefined,
   });
+  // Players knocked out this sync in a non-scoring round (rounds 1–3 of a Grand
+  // Slam) earn no QP and so never appear via changedParticipantIds. Computed here
+  // so it feeds BOTH the primary's own notification below AND the fan-out, which
+  // propagates it to every mirror window (whose placement-only data can't detect a
+  // knockout on its own).
+  const newlyEliminatedIds = new Set(newlyDecidedLoserIds);
+
   await fanOutMajorIfPrimary(
     { id: event.id, isPrimary: event.isPrimary, tournamentId: event.tournamentId },
-    { markComplete: false },
+    { markComplete: false, newlyEliminatedParticipantIds: newlyEliminatedIds },
   );
 
   // Announce QP changes for the primary window. Sibling windows are announced by
@@ -622,10 +629,7 @@ export async function syncTennisDraw(eventId: string): Promise<DrawSyncResult> {
   // outside the rescore transaction so the webhook HTTP call neither holds the
   // transaction open nor rolls back the score if Discord fails.
   //
-  // Also announce players knocked out this sync in a non-scoring round (rounds
-  // 1–3 of a Grand Slam), who earn no QP and so never appear via changedParticipantIds.
   // Fire even when no QP changed, so an early-round elimination is still surfaced.
-  const newlyEliminatedIds = new Set(newlyDecidedLoserIds);
   if (changedParticipantIds.size > 0 || newlyEliminatedIds.size > 0) {
     try {
       await notifyQualifyingPointsUpdate(
diff --git a/app/services/sync-tournament-results.ts b/app/services/sync-tournament-results.ts
index 792283d..0410f45 100644
--- a/app/services/sync-tournament-results.ts
+++ b/app/services/sync-tournament-results.ts
@@ -60,6 +60,16 @@ export interface SyncOptions {
    * stage. Omitted for golf-style majors (no bracket) → canonical row-count is used.
    */
   tieCountByPlacement?: Map<number, number>;
+  /**
+   * Canonical participant ids (participants.id) knocked out this sync in a
+   * non-scoring round on the primary bracket. Threaded through so each mirror
+   * window can translate them to its own season_participant ids and announce the
+   * "Knocked Out" section — these players earn no QP and so are otherwise invisible
+   * to the mirror (a null-placement filler row indistinguishable from "not yet
+   * played"). Canonical ids because they cross window boundaries; each window holds
+   * a different season_participant row for the same canonical participant.
+   */
+  newlyEliminatedCanonicalParticipantIds?: Set<string>;
 }
 
 /**
@@ -87,6 +97,7 @@ export async function syncTournamentResults(
     skipEventId,
     skipNotifications = false,
     tieCountByPlacement,
+    newlyEliminatedCanonicalParticipantIds,
   } = options;
 
   const report: SyncReport = {
@@ -216,13 +227,28 @@ export async function syncTournamentResults(
           }
         }
 
-        // 3d. Delegate to scoring engine inside the same transaction.
+        // 3d. Translate the primary's newly-eliminated canonical participants into
+        // THIS window's season_participant ids (same participantId → sp.id key the
+        // canonical result copy uses above), so processQualifyingEvent can announce
+        // the "Knocked Out" section for players drafted in this window's leagues.
+        let windowEliminatedSpIds: Set<string> | undefined;
+        if (newlyEliminatedCanonicalParticipantIds?.size) {
+          windowEliminatedSpIds = new Set<string>();
+          for (const sp of rosters) {
+            if (sp.participantId && newlyEliminatedCanonicalParticipantIds.has(sp.participantId)) {
+              windowEliminatedSpIds.add(sp.id);
+            }
+          }
+        }
+
+        // 3e. Delegate to scoring engine inside the same transaction.
         await processQualifyingEvent(ev.id, tx, {
           skipNotifications,
           canonicalTieCountByPlacement: effectiveTieCountByPlacement,
+          newlyEliminatedParticipantIds: windowEliminatedSpIds,
         });
 
-        // 3e. Mark the window event complete (final-results sync only). This is
+        // 3f. Mark the window event complete (final-results sync only). This is
         // what makes "score once" actually complete every window — without it,
         // each sibling stayed "In Progress" and had to be completed by hand.
         // Skip windows already complete so a re-run (e.g. a backfill) doesn't
@@ -297,9 +323,23 @@ export async function syncTournamentResults(
  */
 export async function syncMajorFromPrimaryEvent(
   primaryEventId: string,
-  options: { markComplete?: boolean; skipNotifications?: boolean } = {}
+  options: {
+    markComplete?: boolean;
+    skipNotifications?: boolean;
+    /**
+     * Primary-window season_participant ids knocked out this sync in a non-scoring
+     * round (from the primary bracket's newlyDecidedLoserIds). Translated to
+     * canonical participant ids here, then fanned out so each mirror window can
+     * announce its own "Knocked Out" section.
+     */
+    newlyEliminatedParticipantIds?: Set<string>;
+  } = {}
 ): Promise<SyncReport> {
-  const { markComplete = false, skipNotifications = false } = options;
+  const {
+    markComplete = false,
+    skipNotifications = false,
+    newlyEliminatedParticipantIds,
+  } = options;
 
   const primaryEvent = await getScoringEventById(primaryEventId);
   if (!primaryEvent) {
@@ -372,11 +412,32 @@ export async function syncMajorFromPrimaryEvent(
     db
   );
 
+  // Translate the primary window's eliminated season_participant ids into canonical
+  // participant ids so the fan-out can re-key them per mirror window. These are
+  // non-scoring-round losers (null placement), so they were skipped from canonical
+  // promotion above — resolve them directly from season_participants, not from
+  // tournament_results.
+  let newlyEliminatedCanonicalParticipantIds: Set<string> | undefined;
+  if (newlyEliminatedParticipantIds?.size) {
+    const eliminatedRows = await db
+      .select({ participantId: schema.seasonParticipants.participantId })
+      .from(schema.seasonParticipants)
+      .where(
+        inArray(schema.seasonParticipants.id, [...newlyEliminatedParticipantIds])
+      );
+    newlyEliminatedCanonicalParticipantIds = new Set(
+      eliminatedRows
+        .map((r) => r.participantId)
+        .filter((id): id is string => id !== null)
+    );
+  }
+
   return syncTournamentResults(tournamentId, {
     markComplete,
     skipEventId: primaryEventId,
     skipNotifications,
     tieCountByPlacement,
+    newlyEliminatedCanonicalParticipantIds,
   });
 }
 
@@ -434,7 +495,15 @@ async function deriveStructuralTieSpanForBracket(
  */
 export async function fanOutMajorIfPrimary(
   event: { id: string; isPrimary: boolean; tournamentId: string | null },
-  options: { markComplete?: boolean } = {}
+  options: {
+    markComplete?: boolean;
+    /**
+     * Primary-window season_participant ids knocked out this sync in a non-scoring
+     * round. Forwarded to the fan-out so each mirror window announces its own
+     * "Knocked Out" section.
+     */
+    newlyEliminatedParticipantIds?: Set<string>;
+  } = {}
 ): Promise<void> {
   if (!event.isPrimary || !event.tournamentId) return;
   try {