fix

src/tournament/tournament.service.ts

@@ -303,7 +303,9 @@ export class TournamentService extends CrudService(Tournament, {
             '只能从瑞士轮比赛导入选手。',
           ).toException();
         }
-        participants = sortAfterSwiss(participants.slice(dto.swissMaxPlayers));
+        participants = sortAfterSwiss(
+          participants.slice(0, dto.swissMaxPlayers),
+        );
       }
     } else if (dto.ygobbsCompt) {
       const comptId = dto.getYgobbsComptId();