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Washington Nationals at St. Louis Cardinals

All Washington Nationals predictions · All St. Louis Cardinals predictions

MLB · Saturday, September 19, 2026 · 7:16 PM · Final: 8-5

The model's call
St. Louis Cardinals to win
Model confidence 50.2%
Books consensus 50.2%
Result Washington Nationals won model ✗
Identical on purpose: the model applies no adjustment to the de-vigged consensus of the books and Novig, a no-cut exchange, until a candidate signal proves itself in shadow audit — none has yet. Kalshi and Polymarket below are a comparison, not an input.

Closing moneyline by book

The last price each book posted before first pitch — the prices this call could actually have been bet at. Best on each side is highlighted. In-game odds are deliberately excluded: once the game starts, the price tracks the score, not the matchup.

Book Washington NationalsSt. Louis Cardinals
BetMGM -110 -110
BetRivers -103 -117
DraftKings -104 -115
ESPN BET -105 -115
Fanatics -110 -110
FanDuel -108 -108
Hard Rock Bet -110 -110
Caesars -110 -113

Spread & total

Not part of the model's call. Collected from every book and graded in public so the prices can be checked — how spreads and totals have graded so far. The percent is what the price itself implies, vig removed.

Spread · closing
Nationals −1.5
priced 37.8% to cover · 8 books
opened Cardinals −1.5
Washington Nationals covered −1.5
Total · closing
O/U 8.5
priced 51.9% over · 7 books, 1 on another number
Over 8.5 (13 scored)
Spread by book NationalsCardinals
BetMGM −1.5 +150 +1.5 -185
BetRivers −1.5 +155 +1.5 -195
DraftKings −1.5 +155 +1.5 -189
ESPN BET −1.5 +160 +1.5 -190
Fanatics −1.5 +145 +1.5 -180
FanDuel −1.5 +146 +1.5 -176
Hard Rock Bet −1.5 +150 +1.5 -185
Caesars −1.5 +157 +1.5 -190
Total by bookOverUnder
BetMGM 8.5 -118 8.5 -102
BetRivers 9 -115 9 -125
DraftKings 8.5 -124 8.5 +103
ESPN BET 8.5 -120 8.5 +100
Fanatics 8.5 -115 8.5 -105
FanDuel 8.5 -120 8.5 -102
Hard Rock Bet 8.5 -120 8.5 +100
Caesars 8.5 -115 8.5 -105

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 Washington NationalsSt. Louis Cardinals
Books consensus fair, de-vigged 49.8% 50.2%
Best book price incl. vig 50.7% 51.9%
Kalshi contract price 50.5% 49.5%
Polymarket contract price 50.5% 49.5%
Markets average 50.5% 49.5%

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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