Ability to have multiple bets per line.

backend/app/routers/sport_events.py

@@ -75,30 +75,30 @@ async def get_event_with_grid(
     )
     bets = bets_result.scalars().all()
 
-    # Build spread grid with bet info
+    # Build spread grid with bet info - now supports multiple bets per spread
     spread_grid = {}
     for spread in spreads:
-        # Check for HOME team bet at this spread
-        bet_at_spread = next(
-            (b for b in bets if b.spread == spread and b.team == TeamSide.HOME),
-            None
-        )
+        # Get ALL bets at this spread (both open and matched)
+        bets_at_spread = [b for b in bets if b.spread == spread]
 
-        if bet_at_spread:
-            spread_grid[str(spread)] = {
-                "bet_id": bet_at_spread.id,
-                "creator_id": bet_at_spread.creator_id,
-                "creator_username": bet_at_spread.creator.username,
-                "stake": float(bet_at_spread.stake_amount),
-                "status": bet_at_spread.status.value,
-                "team": bet_at_spread.team.value,
-                "can_take": (
-                    bet_at_spread.status == SpreadBetStatus.OPEN and
-                    bet_at_spread.creator_id != current_user.id
-                )
-            }
+        if bets_at_spread:
+            spread_grid[str(spread)] = [
+                {
+                    "bet_id": bet.id,
+                    "creator_id": bet.creator_id,
+                    "creator_username": bet.creator.username,
+                    "stake": float(bet.stake_amount),
+                    "status": bet.status.value,
+                    "team": bet.team.value,
+                    "can_take": (
+                        bet.status == SpreadBetStatus.OPEN and
+                        bet.creator_id != current_user.id
+                    )
+                }
+                for bet in bets_at_spread
+            ]
         else:
-            spread_grid[str(spread)] = None
+            spread_grid[str(spread)] = []
 
     return {
         "id": event.id,

backend/app/routers/spread_bets.py

@@ -51,20 +51,6 @@ async def create_spread_bet(
             detail=f"Spread must be between {event.min_spread} and {event.max_spread}"
         )
 
-    # Check for existing bet at this spread
-    existing_result = await db.execute(
-        select(SpreadBet).where(
-            and_(
-                SpreadBet.event_id == bet_data.event_id,
-                SpreadBet.spread == bet_data.spread,
-                SpreadBet.team == bet_data.team,
-                SpreadBet.status == SpreadBetStatus.OPEN
-            )
-        )
-    )
-    if existing_result.scalar_one_or_none():
-        raise HTTPException(status_code=400, detail="A bet already exists at this spread")
-
     # Get admin settings for commission
     settings_result = await db.execute(select(AdminSettings).limit(1))
     settings = settings_result.scalar_one_or_none()