Arizona Diamondbacks at Boston Red Sox
All Arizona Diamondbacks predictions · All Boston Red Sox predictions
MLB · Tuesday, August 18, 2026 · 7:11 PM · Final: 4-9
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 | Arizona Diamondbacks | Boston Red Sox |
|---|---|---|
| BetMGM | +145 | -180 |
| BetRivers | +135 | -155 |
| DraftKings | +148 | -159 |
| ESPN BET | +149 | -169 |
| Fanatics | +145 | -175 |
| FanDuel | +146 | -158 |
| Hard Rock Bet | +155 | -165 |
| Caesars | +157 | -172 |
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 | Arizona Diamondbacks | Boston Red Sox |
|---|---|---|
| Books consensus fair, de-vigged | 39.0% | 61.0% |
| Best book price incl. vig | 38.9% | 60.8% |
| Kalshi contract price | 38.5% | 61.5% |
| Polymarket contract price | 38.5% | 61.5% |
| Markets average | 38.5% | 61.5% |
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.