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

Kansas City Royals at Pittsburgh Pirates

All Kansas City Royals predictions · All Pittsburgh Pirates predictions

MLB · Sunday, September 20, 2026 · 1:37 PM · Final: 3-4

The model's call
Pittsburgh Pirates to win
Model confidence 52.2%
Books consensus 52.2%
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 Kansas City RoyalsPittsburgh Pirates
BetMGM +100 -120
BetRivers -108 -110
DraftKings +101 -122
ESPN BET +100 -120
Fanatics +100 -120
FanDuel +100 -118
Hard Rock Bet +100 -120
Caesars -102 -117

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
Royals −1.5
priced 36.2% to cover · 8 books
Pittsburgh Pirates covered +1.5
Total · closing
O/U 8.5
priced 48.9% over · 8 books
Under 8.5 (7 scored)
Spread by book RoyalsPirates
BetMGM −1.5 +165 +1.5 -200
BetRivers −1.5 +150 +1.5 -190
DraftKings −1.5 +169 +1.5 -207
ESPN BET −1.5 +170 +1.5 -215
Fanatics −1.5 +155 +1.5 -190
FanDuel −1.5 +164 +1.5 -200
Hard Rock Bet −1.5 +160 +1.5 -195
Caesars −1.5 +165 +1.5 -197
Total by bookOverUnder
BetMGM 8.5 -105 8.5 -115
BetRivers 8.5 -107 8.5 -114
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 -113

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 Kansas City RoyalsPittsburgh Pirates
Books consensus fair, de-vigged 47.8% 52.2%
Best book price incl. vig 49.8% 52.4%
Kalshi contract price 47.5% 52.5%
Polymarket contract price 47.5% 52.5%
Markets average 47.5% 52.5%

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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