diff --git a/backend/services/officialTournamentService.js b/backend/services/officialTournamentService.js
index 6783c9ae..587c459e 100755
--- a/backend/services/officialTournamentService.js
+++ b/backend/services/officialTournamentService.js
@@ -340,8 +340,14 @@ class OfficialTournamentService {
         row.registered = false;
         row.participated = false;
         break;
+      case 'not-interested':
+        row.wants = false;
+        row.registered = false;
+        row.participated = false;
+        row.placement = null;
+        break;
       default: {
-        const err = new Error('Invalid action. Use: register, participate, or reset');
+        const err = new Error('Invalid action. Use: register, participate, reset, or not-interested');
         err.status = 400;
         throw err;
       }
diff --git a/frontend/src/views/OfficialTournaments.vue b/frontend/src/views/OfficialTournaments.vue
index f1f1b464..6072a330 100755
--- a/frontend/src/views/OfficialTournaments.vue
+++ b/frontend/src/views/OfficialTournaments.vue
@@ -315,7 +315,7 @@
                   <td class="action-cell">
                     <button
                       v-if="!item.participated && !item.registered && !item.wants"
-                      @click="markMemberInterested(group.memberId)"
+                      @click="markMemberInterested(item)"
                       class="btn-status btn-register"
                       title="Als interessiert markieren">
                       Interessiert
@@ -327,6 +327,13 @@
                       title="Als angemeldet markieren">
                       Angemeldet
                     </button>
+                    <button
+                      v-if="!item.participated && !item.registered && item.wants"
+                      @click="updateStatus(item, 'not-interested')"
+                      class="btn-status btn-reset"
+                      title="Interesse für diese Konkurrenz zurücknehmen">
+                      Nicht interessiert
+                    </button>
                     <button
                       v-else-if="item.registered && !item.participated"
                       @click="updateStatus(item, 'participate')"
@@ -1813,19 +1820,12 @@ export default {
         'success'
       );
     },
-    async markMemberInterested(memberId) {
-      const competitions = ((this.parsed?.parsedData?.competitions) || [])
-        .filter((competition) => {
-          const member = (this.members || []).find((entry) => String(entry.id) === String(memberId));
-          return member && this.isEligibleForCompetition(member, competition);
-        });
-
-      for (const competition of competitions) {
-        const participation = this.getParticipation(competition.id, memberId);
-        if (participation.wants || participation.registered || participation.participated) continue;
-        participation.wants = true;
-        await this.saveParticipation(competition.id, memberId);
-      }
+    async markMemberInterested(item) {
+      const [competitionId, memberId] = String(item.key).split('-');
+      const participation = this.getParticipation(competitionId, memberId);
+      if (participation.wants || participation.registered || participation.participated) return;
+      participation.wants = true;
+      await this.saveParticipation(competitionId, memberId);
     },
     async updateStatusForCompetition(competition, member, action) {
       try {