diff --git a/duels-plugin/src/main/java/com/meteordevelopments/duels/duel/DuelManager.java b/duels-plugin/src/main/java/com/meteordevelopments/duels/duel/DuelManager.java
index ca03ab19..8d416ce0 100644
--- a/duels-plugin/src/main/java/com/meteordevelopments/duels/duel/DuelManager.java
+++ b/duels-plugin/src/main/java/com/meteordevelopments/duels/duel/DuelManager.java
@@ -87,6 +87,14 @@ public DuelManager(final DuelsPlugin plugin) {
     }
 
     public void handleMatchEnd(DuelMatch match, ArenaImpl arena, Player loser, Location deadLocation, Player winner) {
+        // Safety check: Don't process if match is already finished (prevents race condition where multiple death events trigger concurrent match ending)
+        if (match.isFinished()) {
+            return;
+        }
+        
+        // Mark match as finished immediately to prevent re-entry from concurrent death events
+        match.setFinished();
+        
         DuelsPlugin.getMorePaperLib().scheduling().regionSpecificScheduler(arena.first().getLocation()).runDelayed(() -> {
             if (arena.size() == 0) {
                 match.getAllPlayers().forEach(matchPlayer -> {
@@ -208,6 +216,14 @@ public void handleMatchEnd(DuelMatch match, ArenaImpl arena, Player loser, Locat
     }
 
     public void handleTeamMatchEnd(TeamDuelMatch match, ArenaImpl arena, Location deadLocation, TeamDuelMatch.Team winningTeam) {
+        // Safety check: Don't process if team match is already finished (prevents race condition where multiple team member deaths trigger concurrent match ending)
+        if (match.isFinished()) {
+            return;
+        }
+        
+        // Mark match as finished immediately to prevent re-entry from concurrent team member deaths
+        match.setFinished();
+        
         DuelsPlugin.getMorePaperLib().scheduling().regionSpecificScheduler(deadLocation).runDelayed(() -> {
             if (config.isSpawnFirework()) {
                 DuelsPlugin.getMorePaperLib().scheduling().regionSpecificScheduler(deadLocation).run(() -> {