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 · Sunday, September 13, 2026 · 2:21 PM · Final: 4-3

The model's call
Chicago Cubs to win
Model confidence 60.0%
Books consensus 60.0%
Result Pittsburgh Pirates 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 +140 -170
BetRivers +133 -159
DraftKings +141 -171
ESPN BET +140 -165
Fanatics +140 -170
FanDuel +136 -162
Hard Rock Bet +140 -165
Caesars +148 -175

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 40.7% to cover · 8 books
Pittsburgh Pirates covered +1.5
Total · closing
O/U 7
priced 50.9% over · 5 books, 3 on another number
opened 6.5
Push at 7
Spread by book PiratesCubs
BetMGM +1.5 -155 −1.5 +125
BetRivers +1.5 -167 −1.5 +138
DraftKings +1.5 -157 −1.5 +130
ESPN BET +1.5 -160 −1.5 +135
Fanatics +1.5 -165 −1.5 +135
FanDuel +1.5 -164 −1.5 +136
Hard Rock Bet +1.5 -165 −1.5 +140
Caesars +1.5 -150 −1.5 +126
Total by bookOverUnder
BetMGM 7 -105 7 -115
BetRivers 7 -112 7 -129
DraftKings 7 -114 7 -106
ESPN BET 6.5 -145 6.5 +120
Fanatics 7 -115 7 -105
FanDuel 6.5 -142 6.5 +116
Hard Rock Bet 7.5 +115 7.5 -140
Caesars 7 -120 7 +100

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 40.0% 60.0%
Best book price incl. vig 40.3% 61.4%
Kalshi contract price 39.5% 60.5%
Polymarket contract price 39.5% 60.5%
Markets average 39.5% 60.5%

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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