Tampa Bay Rays at Seattle Mariners
MLB · Friday, August 7, 2026 · 9:46 PM
The model's call
Seattle Mariners to win
Model confidence 51.5%
Books consensus 51.5%
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 | Tampa Bay Rays | Seattle Mariners |
|---|---|---|
| BetRivers | +100 | -118 |
| ESPN BET | +100 | -120 |
| FanDuel | -102 | -116 |
| Hard Rock Bet | +100 | -110 |
| Caesars | -105 | -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 right now.
| Venue | Tampa Bay Rays | Seattle Mariners |
|---|---|---|
| Books consensus fair, de-vigged | 48.5% | 51.5% |
| Best book price incl. vig | 50.0% | 52.4% |
| Kalshi contract price | 49.5% | 50.5% |
| Polymarket contract price | 49.5% | 50.5% |
| Markets average | 49.5% | 50.5% |
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.