Boston Red Sox at Tampa Bay Rays
All Boston Red Sox predictions · All Tampa Bay Rays predictions
MLB · Saturday, September 19, 2026 · 4:11 PM
The model's call
Tampa Bay Rays to win
Model confidence 55.5%
Books consensus 55.5%
Identical on purpose: the model applies no adjustment to the books’ de-vigged
consensus until a candidate signal proves itself in shadow audit — none has yet.
Prediction markets below are a comparison, not an input.
Line shop — latest moneyline by book
Best available price on each side is highlighted. Prices move; always confirm at the book.
| Book | Boston Red Sox | Tampa Bay Rays |
|---|---|---|
| BetMGM | +115 | -140 |
| BetRivers | +116 | -139 |
| DraftKings | +117 | -142 |
| ESPN BET | +115 | -135 |
| Fanatics | +115 | -140 |
| FanDuel | +114 | -134 |
| Hard Rock Bet | +115 | -135 |
| Caesars | +115 | -136 |
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 right now.
| Venue | Boston Red Sox | Tampa Bay Rays |
|---|---|---|
| Books consensus fair, de-vigged | 44.5% | 55.5% |
| Best book price incl. vig | 46.1% | 57.3% |
| Kalshi contract price | 44.5% | 55.5% |
| Polymarket contract price | 44.5% | 55.5% |
| Markets average | 44.5% | 55.5% |
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.
Trade the event contracts
The prediction-market prices on our game pages are tradeable markets.
Referral links — we may earn a reward if you sign up. 18+. Event contracts
involve risk; this is not investment advice.