diff --git a/database/schema.ts b/database/schema.ts
index f763fca..bff5ea5 100644
--- a/database/schema.ts
+++ b/database/schema.ts
@@ -1,4 +1,4 @@
-import { integer, pgTable, varchar, uuid, timestamp, pgEnum, boolean, text, date, decimal, uniqueIndex, index, jsonb } from "drizzle-orm/pg-core";
+import { check, integer, pgTable, varchar, uuid, timestamp, pgEnum, boolean, text, date, decimal, uniqueIndex, index, jsonb } from "drizzle-orm/pg-core";
 import { relations, sql } from "drizzle-orm";
 
 export const users = pgTable("users", {
@@ -554,7 +554,12 @@ export const scoringEvents = pgTable("scoring_events", {
   completedAt: timestamp("completed_at"),
   createdAt: timestamp("created_at").defaultNow().notNull(),
   updatedAt: timestamp("updated_at").defaultNow().notNull(),
-});
+}, (t) => ({
+  qualifyingEventsRequireTournament: check(
+    "scoring_events_qualifying_require_tournament",
+    sql`NOT ${t.isQualifyingEvent} OR ${t.tournamentId} IS NOT NULL`,
+  ),
+}));
 
 // Results for participants in specific events
 export const eventResults = pgTable("event_results", {