Arizona Diamondbacks at St. Louis Cardinals
MLB · Thursday, July 23, 2026 · 5:16 PM · Final: 10-6
The model's call
St. Louis Cardinals to win
Model confidence 53.2%
Books consensus 53.2%
Result Arizona Diamondbacks won
model ✗
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.
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 | St. Louis Cardinals |
|---|---|---|
| Books consensus fair, de-vigged | 46.8% | 53.2% |
| Kalshi contract price | 47.5% | 52.5% |
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.
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