diff --git a/app/routes/admin.sports-seasons.$id.events.$eventId.bracket.server.ts b/app/routes/admin.sports-seasons.$id.events.$eventId.bracket.server.ts
index 9ff856f..88d3ccd 100644
--- a/app/routes/admin.sports-seasons.$id.events.$eventId.bracket.server.ts
+++ b/app/routes/admin.sports-seasons.$id.events.$eventId.bracket.server.ts
@@ -824,7 +824,19 @@ export async function action({ request, params }: Route.ActionArgs) {
       // Generate the empty knockout bracket structure
       await generateBracketFromTemplate(params.eventId, templateId);
 
-      return { success: "Groups and knockout bracket structure created successfully" };
+      // Eliminate participants from this sport season who are not in any group
+      const allParticipants = await findParticipantsBySportsSeasonId(params.id);
+      let eliminatedCount = 0;
+      for (const participant of allParticipants) {
+        if (!uniqueParticipants.has(participant.id)) {
+          await setParticipantResult(participant.id, params.id, 0);
+          eliminatedCount++;
+        }
+      }
+
+      return {
+        success: `Groups and knockout bracket structure created successfully${eliminatedCount > 0 ? ` (${eliminatedCount} participant(s) not in any group marked as eliminated)` : ""}`,
+      };
     } catch (error) {
       logger.error("Error generating groups:", error);
       return {