Washington Nationals at St. Louis Cardinals
All Washington Nationals predictions · All St. Louis Cardinals predictions
MLB · Friday, September 18, 2026 · 8:16 PM
The model's call
St. Louis Cardinals to win
Model confidence 51.1%
Books consensus 51.1%
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 | Washington Nationals | St. Louis Cardinals |
|---|---|---|
| DraftKings | -105 | -115 |
| ESPN BET | -105 | -115 |
| Fanatics | -105 | -115 |
| FanDuel | -106 | -110 |
| Hard Rock Bet | -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 | Washington Nationals | St. Louis Cardinals |
|---|---|---|
| Books consensus fair, de-vigged | 48.9% | 51.1% |
| Best book price incl. vig | 51.2% | 52.4% |
| Kalshi contract price | 49.0% | 51.0% |
| Polymarket contract price | 48.5% | 51.5% |
| Markets average | 48.7% | 51.2% |
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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