Kansas City Royals at Boston Red Sox
All Kansas City Royals predictions · All Boston Red Sox predictions
MLB · Sunday, September 13, 2026 · 1:36 PM
The model's call
Boston Red Sox to win
Model confidence 61.6%
Books consensus 61.6%
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 | Kansas City Royals | Boston Red Sox |
|---|---|---|
| BetMGM | +150 | -185 |
| DraftKings | +149 | -181 |
| ESPN BET | +150 | -175 |
| Fanatics | +150 | -180 |
| FanDuel | +154 | -184 |
| Hard Rock Bet | +155 | -185 |
| Caesars | +150 | -178 |
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 | Kansas City Royals | Boston Red Sox |
|---|---|---|
| Books consensus fair, de-vigged | 38.4% | 61.6% |
| Best book price incl. vig | 39.2% | 63.6% |
| Kalshi contract price | 38.9% | 61.1% |
| Polymarket contract price | 38.5% | 61.5% |
| Markets average | 38.7% | 61.3% |
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.