Seattle Mariners at Athletics
All Seattle Mariners predictions · All Athletics predictions
MLB · Sunday, September 13, 2026 · 4:06 PM · Final: 7-8
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 | Athletics |
|---|---|---|
| BetMGM | -135 | +110 |
| BetRivers | -137 | +116 |
| DraftKings | -131 | +109 |
| ESPN BET | -130 | +110 |
| Fanatics | -130 | +110 |
| FanDuel | -136 | +116 |
| Hard Rock Bet | -135 | +110 |
| Caesars | -130 | +110 |
Spread & total
Not part of the model's call. Collected from every book and graded in public so the prices can be checked — how spreads and totals have graded so far. The percent is what the price itself implies, vig removed.
| Spread by book | Mariners | Athletics |
|---|---|---|
| BetMGM | −1.5 +120 | +1.5 -145 |
| BetRivers | −1.5 +118 | +1.5 -143 |
| DraftKings | −1.5 +123 | +1.5 -148 |
| ESPN BET | −1.5 +125 | +1.5 -150 |
| Fanatics | −1.5 +125 | +1.5 -150 |
| FanDuel | −1.5 +114 | +1.5 -137 |
| Hard Rock Bet | −1.5 +115 | +1.5 -145 |
| Caesars | −1.5 +122 | +1.5 -145 |
| Total by book | Over | Under |
|---|---|---|
| BetMGM | 9 -118 | 9 -102 |
| BetRivers | 9 -118 | 9 -121 |
| DraftKings | 9 -105 | 9 -114 |
| ESPN BET | 9.5 +115 | 9.5 -135 |
| Fanatics | 9 -105 | 9 -115 |
| FanDuel | 9.5 +108 | 9.5 -132 |
| Hard Rock Bet | 9.5 +115 | 9.5 -135 |
| Caesars | 9 -105 | 9 -115 |
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 | Athletics |
|---|---|---|
| Books consensus fair, de-vigged | 54.5% | 45.5% |
| Best book price incl. vig | 56.5% | 46.3% |
| Kalshi contract price | 54.5% | 45.5% |
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.