Seattle Mariners at Houston Astros
All Seattle Mariners predictions · All Houston Astros predictions
MLB · Sunday, August 16, 2026 · 7:20 PM · Final: 3-2
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 | Seattle Mariners | Houston Astros |
|---|---|---|
| BetMGM | +105 | -125 |
| BetRivers | +114 | -130 |
| DraftKings | +112 | -120 |
| ESPN BET | +107 | -120 |
| Fanatics | +105 | -125 |
| FanDuel | +114 | -124 |
| Hard Rock Bet | +115 | -125 |
| Caesars | +115 | -125 |
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 | Seattle Mariners | Houston Astros |
|---|---|---|
| Books consensus fair, de-vigged | 46.1% | 53.9% |
| Best book price incl. vig | 46.5% | 54.5% |
| Kalshi contract price | 46.0% | 54.0% |
| Polymarket contract price | 46.5% | 53.5% |
| Markets average | 46.3% | 53.8% |
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.