Boston Celtics vs Detroit Pistons: crowd vs house
NBA · Tue Oct 20, 3:00 PM ET · House take 4.6%
Crowd vs House split
House take (median book margin): 4.6%. That is the vig you pay by betting at the house. Split = crowd price minus the house's no-vig fair price.
| Side | CROWD | HOUSE fair | Split |
|---|---|---|---|
| Boston Celtics | 52.5% Polymarket + Kalshi mid | 52.2% no-vig median | +0.3 pts |
| Detroit Pistons | 47.5% Polymarket + Kalshi mid | 47.8% no-vig median | -0.3 pts |
Who's cheaper: Boston Celtics to win
House no-vig fair: 52.2%. Cheapest after vig & fees: CROWDPolymarket by 0.4¢ per $1 payout vs HOUSEFanDuel.
| Venue | Quoted | All-in cost / $1 |
|---|---|---|
| CROWDPolymarket open | 53.0¢ + 1.25¢ fee | 54.2¢ -119 |
| HOUSEFanDuel | -120 (1.83) | 54.6¢ -120 |
| CROWDKalshi open | 53¢ + 1.74¢ fee | 54.7¢ -121 |
Who's cheaper: Detroit Pistons to win
House no-vig fair: 47.8%. Cheapest after vig & fees: CROWDPolymarket by 0.3¢ per $1 payout vs HOUSEFanDuel.
| Venue | Quoted | All-in cost / $1 |
|---|---|---|
| CROWDPolymarket open | 48.0¢ + 1.25¢ fee | 49.2¢ +103 |
| HOUSEFanDuel | +102 (2.02) | 49.5¢ +102 |
| CROWDKalshi open | 48¢ + 1.75¢ fee | 49.7¢ +101 |
House moneylines
| Book | Celtics | Pistons | House take |
|---|---|---|---|
| HOUSEBetMGM | -120 | +100 | 4.6% |
| HOUSEBetRivers | -123 | +100 | 5.2% |
| HOUSECaesars | -120 | +100 | 4.6% |
| HOUSEDraftKings | -120 | +100 | 4.6% |
| HOUSEFanDuel | -120 | +102 | 4.1% |
| HOUSEFanatics | -120 | +100 | 4.6% |
All-in cost = what you pay for a contract/bet that returns $1 if it wins, after Kalshi or Polymarket taker fees (the vig is already inside sportsbook prices). Lower is better. How we calculate this.
Last updated: Oct 20, 2026 1:20 AM ET. Prices move constantly; always check the live price at the venue.