diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ab4090..68a19dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,21 @@
 # Changelog
 
+## v4.1 - 2025-09-13 - 修复TBD事件重复问题
+- **🐛 修复TBD事件匹配逻辑**：
+  - 修复了 `find_existing_event()` 方法中的TBD匹配逻辑
+  - 原问题：只匹配 "TBD_TBD" 事件键，不匹配 "TBD_NGX" 或 "PV_TBD" 等部分TBD事件
+  - 现在可以正确识别并更新所有包含TBD的事件（"TBD vs Team" 和 "Team vs TBD"）
+  - 防止创建重复事件，确保TBD事件被更新而非创建新事件
+- **🔧 增强TBD事件清理**：
+  - 修复了 `clean_duplicate_and_expired_events()` 方法的清理逻辑
+  - 原问题：只删除 "TBD vs TBD" 格式的事件，导致部分TBD事件无法被清理
+  - 现在删除所有与确认比赛同时间的TBD事件，不再限于特定格式
+  - 成功清理了9月13日的3个重复TBD事件
+- **🎯 问题根源分析**：
+  - 发现问题：同一时间存在 "TBD vs NGX" 和 "XG vs NGX" 重复事件
+  - 根本原因：TBD事件没有被正确更新，而是创建了新的确认事件
+  - 解决方案：改进事件匹配算法，支持部分TBD匹配和时间窗口匹配
+
 ## v4.0 - 2025-09-12 - 代码结构重构与错误处理优化
 - **🏗️ 代码结构重构**：
   - 使用 `@dataclass` 替代字典存储比赛数据，提高类型安全性
@@ -180,10 +196,11 @@
 | v3.8 | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
 | v3.9 | ✓ | ✓ | ✓ | ✓ | ✓+ | ✓ |
 | v4.0 | ✓ | ✓ | ✓ | ✓ | ✓+ | ✓ |
+| v4.1 | ✓ | ✓ | ✓ | ✓ | ✓++ | ✓ |
 
 ## 使用建议
 
-推荐使用最新的 v4.0 版本，它包含所有功能并提供更好的错误处理：
+推荐使用最新的 v4.1 版本，它修复了TBD事件重复问题并提供更好的错误处理：
 ```bash
 python sync_dota2_matches.py --calendar-id "YOUR_CALENDAR_ID"
 ```
diff --git a/README.md b/README.md
index e9b515d..d489f7c 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,15 @@
-# Dota 2 Calendar Sync v4.0
+# Dota 2 Calendar Sync v4.1
 
 自动从 Liquipedia 获取 Dota 2 Tier 1 比赛信息并同步到 Google Calendar，支持自动更新比赛结果、时间变更、智能管理TBD占位事件、自动清理过期和重复比赛。
 
-**v4.0 新特性**：
+## 更新日志
+
+### v4.1 (2025-09-13)
+- 🐛 修复TBD事件匹配逻辑：现在可以正确识别并更新部分TBD事件（如 "TBD vs Team" 或 "Team vs TBD"）
+- 🔧 增强TBD事件清理：删除所有与确认比赛同时间的TBD事件，不再限于 "TBD vs TBD" 格式
+- 🎯 防止创建重复事件：改进事件匹配算法，确保TBD事件被更新而非创建新事件
+
+### v4.0 (2025-09-05)
 - 🏗️ 代码结构重构：使用 dataclass 替代字典，提高类型安全性
 - 🔄 增强错误处理：添加自动重试机制（指数退避）
 - 📝 专业日志系统：使用 Python logging 模块，支持多级别日志
diff --git a/sync_dota2_matches.py b/sync_dota2_matches.py
index 138a949..c206dcd 100644
--- a/sync_dota2_matches.py
+++ b/sync_dota2_matches.py
@@ -654,16 +654,43 @@ class Dota2CalendarSync:
                 match.tournament and match.tournament in event_key):
                 return event
         
-        # Special handling for TBD matches
+        # Special handling for TBD matches - check if this match should update a TBD placeholder
         if not (match.team1 == 'TBD' and match.team2 == 'TBD'):
             for event_key, event in by_match.items():
-                if 'TBD_TBD' in event_key and match.tournament and match.tournament in event_key:
-                    # Check if time matches (within 1 hour)
-                    event_start = event['start'].get('dateTime', event['start'].get('date'))
-                    event_dt = datetime.fromisoformat(event_start.replace('Z', '+00:00'))
-                    if abs((event_dt - match.datetime).total_seconds()) < 3600:
-                        logger.info(f"Found TBD match to update: {match.team1} vs {match.team2}")
-                        return event
+                # Check if this is a TBD event that could be updated with real teams
+                if 'TBD' in event_key and match.tournament and match.tournament in event_key:
+                    # Parse the event key to get teams
+                    key_parts = event_key.split('_')
+                    if len(key_parts) >= 3:
+                        existing_team1 = key_parts[0]
+                        existing_team2 = key_parts[1]
+                        
+                        # Check if this TBD event matches the incoming match
+                        # Match if: one team is TBD and the other matches, or both are TBD
+                        teams_match = False
+                        if existing_team1 == 'TBD' and existing_team2 == 'TBD':
+                            # Both TBD - match by time
+                            teams_match = True
+                        elif existing_team1 == 'TBD' and existing_team2 == match.team2:
+                            # First team is TBD, second matches
+                            teams_match = True
+                        elif existing_team1 == match.team1 and existing_team2 == 'TBD':
+                            # First team matches, second is TBD
+                            teams_match = True
+                        elif existing_team2 == 'TBD' and existing_team1 == match.team1:
+                            # Reverse check
+                            teams_match = True
+                        elif existing_team1 == 'TBD' and existing_team2 == match.team1:
+                            # Reverse check
+                            teams_match = True
+                        
+                        if teams_match:
+                            # Check if time matches (within 1 hour)
+                            event_start = event['start'].get('dateTime', event['start'].get('date'))
+                            event_dt = datetime.fromisoformat(event_start.replace('Z', '+00:00'))
+                            if abs((event_dt - match.datetime).total_seconds()) < 3600:
+                                logger.info(f"Found TBD match to update: {existing_team1} vs {existing_team2} -> {match.team1} vs {match.team2}")
+                                return event
         
         return None
     
@@ -1286,14 +1313,16 @@ class Dota2CalendarSync:
                 for tbd_event in events['tbd']:
                     tbd_summary = tbd_event.get('summary', '')
                     
-                    if 'TBD vs TBD' in tbd_summary and events['confirmed']:
+                    # Delete any TBD event that has a confirmed match at the same time
+                    # This includes "TBD vs TBD", "TBD vs Team", and "Team vs TBD"
+                    if events['confirmed']:
                         if not dry_run:
                             if self.delete_calendar_event(tbd_event['id']):
-                                logger.info(f"🗑️ Deleted TBD vs TBD event at same time as confirmed match")
+                                logger.info(f"🗑️ Deleted TBD event superseded by confirmed match: {tbd_summary}")
                                 deleted_count += 1
                                 time.sleep(0.2)
                         else:
-                            logger.info(f"◯ Would delete TBD vs TBD event: {tbd_summary}")
+                            logger.info(f"◯ Would delete TBD event superseded by confirmed match: {tbd_summary}")
                             deleted_count += 1
         
         # Delete duplicate TBD vs TBD events