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

Pittsburgh Pirates at Chicago Cubs

All Pittsburgh Pirates predictions · All Chicago Cubs predictions

MLB · Friday, September 11, 2026 · 2:21 PM · Final: 2-12

The model's call
Chicago Cubs to win
Model confidence 63.1%
Books consensus 63.1%
Result Chicago Cubs 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 Pittsburgh PiratesChicago Cubs
BetMGM +155 -190
BetRivers +165 -200
DraftKings +156 -189
ESPN BET +160 -190
Fanatics +160 -195
FanDuel +160 -190
Hard Rock Bet +165 -200
Caesars +170 -205

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
Cubs −1.5
priced 46.8% to cover · 8 books
Chicago Cubs covered −1.5
Total · closing
O/U 8.5
priced 48.9% over · 8 books
opened 8
Over 8.5 (14 scored)
Spread by book PiratesCubs
BetMGM +1.5 -125 −1.5 +105
BetRivers +1.5 -127 −1.5 +105
DraftKings +1.5 -124 −1.5 +103
ESPN BET +1.5 -125 −1.5 +105
Fanatics +1.5 -125 −1.5 +105
FanDuel +1.5 -134 −1.5 +112
Hard Rock Bet +1.5 -125 −1.5 +110
Caesars +1.5 -125 −1.5 +105
Total by bookOverUnder
BetMGM 8.5 -105 8.5 -115
BetRivers 8.5 -104 8.5 -118
DraftKings 8.5 -108 8.5 -112
ESPN BET 8.5 -105 8.5 -115
Fanatics 8.5 -105 8.5 -115
FanDuel 8.5 -104 8.5 -118
Hard Rock Bet 8.5 -105 8.5 -115
Caesars 8.5 -105 8.5 -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 at the close.

Venue Pittsburgh PiratesChicago Cubs
Books consensus fair, de-vigged 36.9% 63.1%
Best book price incl. vig 37.0% 65.4%
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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