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

Cleveland Guardians at Detroit Tigers

All Cleveland Guardians predictions · All Detroit Tigers predictions

MLB · Thursday, August 13, 2026 · 1:11 PM · Final: 0-3

The model's call
Cleveland Guardians to win
Model confidence 51.0%
Books consensus 51.0%
Result Detroit Tigers 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 Cleveland GuardiansDetroit Tigers
BetMGM -110 -110
BetRivers -121 +102
DraftKings -103 -105
ESPN BET -120 +107
Fanatics -115 -105
FanDuel -108 +100
Hard Rock Bet -110 +100
Caesars -108 -102

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
Guardians −1.5
priced 39.1% to cover · 8 books
Detroit Tigers covered +1.5
Total · closing
O/U 8
priced 50.0% over · 5 books, 3 on another number
opened 8.5
Under 8 (3 scored)
Spread by book GuardiansTigers
BetMGM −1.5 +145 +1.5 -180
BetRivers −1.5 +143 +1.5 -177
DraftKings −1.5 +148 +1.5 -180
ESPN BET −1.5 +145 +1.5 -175
Fanatics −1.5 +140 +1.5 -170
FanDuel −1.5 +146 +1.5 -178
Hard Rock Bet −1.5 +150 +1.5 -160
Caesars −1.5 +143 +1.5 -170
Total by bookOverUnder
BetMGM 8 -110 8 -110
BetRivers 7.5 -120 7.5 -103
DraftKings 8 -113 8 -107
ESPN BET 7.5 -130 7.5 +110
Fanatics 8 -110 8 -110
FanDuel 8 -118 8 -104
Hard Rock Bet 8.5 +110 8.5 -120
Caesars 8 -105 8 -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 Cleveland GuardiansDetroit Tigers
Books consensus fair, de-vigged 51.0% 49.0%
Best book price incl. vig 50.7% 48.3%
Kalshi contract price 51.5% 48.5%
Polymarket contract price 51.5% 48.5%
Markets average 51.5% 48.5%

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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