diff --git a/retrosheet_data.py b/retrosheet_data.py
index 4571b46..e65b07b 100644
--- a/retrosheet_data.py
+++ b/retrosheet_data.py
@@ -1401,18 +1401,20 @@ async def post_pitching_ratings(ratings_df: pd.DataFrame):
         log_exception(ValueError, 'Unable to post pitching ratings')
 
 
-async def post_positions(pos_df: pd.DataFrame):
+async def post_positions(pos_df: pd.DataFrame, delete_existing: bool = False):
     # Delete all existing cardpositions for this cardset to avoid stale data
     # (e.g., DH positions from buggy runs where outfielders had no defensive positions)
-    logger.info(f'Deleting existing cardpositions for cardset {CARDSET_ID}')
-    existing_positions = await db_get('cardpositions', params=[('cardset_id', CARDSET_ID)])
-    if existing_positions and existing_positions.get('count', 0) > 0:
-        for pos in existing_positions['positions']:
-            try:
-                await db_delete('cardpositions', object_id=pos['id'], timeout=1)
-            except Exception as e:
-                logger.warning(f'Failed to delete cardposition {pos["id"]}: {e}')
-        logger.info(f'Deleted {existing_positions["count"]} old cardpositions')
+    # Only delete on the first call (batters), not the second call (pitchers)
+    if delete_existing:
+        logger.info(f'Deleting existing cardpositions for cardset {CARDSET_ID}')
+        existing_positions = await db_get('cardpositions', params=[('cardset_id', CARDSET_ID)])
+        if existing_positions and existing_positions.get('count', 0) > 0:
+            for pos in existing_positions['positions']:
+                try:
+                    await db_delete('cardpositions', object_id=pos['id'], timeout=1)
+                except Exception as e:
+                    logger.warning(f'Failed to delete cardposition {pos["id"]}: {e}')
+            logger.info(f'Deleted {existing_positions["count"]} old cardpositions')
 
     all_pos = []
 
@@ -1462,8 +1464,8 @@ async def post_batter_data(bs: pd.DataFrame, bc: pd.DataFrame, br: pd.DataFrame,
         left_on='key_bbref',
         right_on='bbref_id'
     )
-    await post_positions(dr)
-    
+    await post_positions(dr, delete_existing=True)  # Delete on first call (batters)
+
     return len(all_players)
 
 
@@ -1499,8 +1501,8 @@ async def post_pitcher_data(ps: pd.DataFrame, pc: pd.DataFrame, pr: pd.DataFrame
         left_on='bbref_id',
         right_on='key_bbref'
     )
-    await post_positions(dr)
-    
+    await post_positions(dr, delete_existing=False)  # Don't delete on second call (pitchers)
+
     return len(all_players)