Sports Edge Model — every game called, every call graded, in public

St. Louis Cardinals at Chicago Cubs

All St. Louis Cardinals predictions · All Chicago Cubs predictions

MLB · Saturday, August 15, 2026 · 2:21 PM · Final: 8-4

The model's call
Chicago Cubs to win
Model confidence 63.0%
Books consensus 63.0%
Result St. Louis Cardinals 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.

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 St. Louis CardinalsChicago Cubs
BetMGM +155 -190
BetRivers +160 -182
DraftKings +168 -181
ESPN BET +162 -185
Fanatics +160 -195
FanDuel +166 -180
Hard Rock Bet +165 -175
Caesars +170 -190

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 St. Louis CardinalsChicago Cubs
Books consensus fair, de-vigged 37.0% 63.0%
Best book price incl. vig 37.0% 63.6%
Kalshi contract price 36.5% 63.5%
Polymarket contract price 36.5% 63.5%
Markets average 36.5% 63.5%

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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