Detroit Tigers at Kansas City Royals
All Detroit Tigers predictions · All Kansas City Royals predictions
MLB · Friday, August 21, 2026 · 8:11 PM · Final: 2-5
Closing moneyline by book
The last price each book posted before first pitch — the prices this call could actually have been bet at. Best on each side is highlighted. In-game odds are deliberately excluded: once the game starts, the price tracks the score, not the matchup.
| Book | Detroit Tigers | Kansas City Royals |
|---|---|---|
| BetMGM | -105 | -115 |
| BetRivers | -103 | -112 |
| DraftKings | -105 | -103 |
| ESPN BET | -102 | -111 |
| Fanatics | -105 | -115 |
| FanDuel | +100 | -108 |
| Hard Rock Bet | -105 | -105 |
| Caesars | +101 | -111 |
Prediction markets vs the books
Every venue sells the same thing — a dollar if that side wins — at a different price. Implied cost per venue below; amber = the cheapest way to buy that side at the close.
| Venue | Detroit Tigers | Kansas City Royals |
|---|---|---|
| Books consensus fair, de-vigged | 49.0% | 51.0% |
| Best book price incl. vig | 49.8% | 50.7% |
| Kalshi contract price | 48.5% | 51.5% |
| Polymarket contract price | 49.5% | 50.5% |
| Markets average | 49.0% | 51.0% |
Contract prices exclude exchange trading fees (Kalshi ~1–2¢ midrange), which narrow small gaps. A venue meaningfully below the books consensus is either a bargain or an early opinion — the graded record decides which.