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Arizona Diamondbacks at Colorado Rockies

All Arizona Diamondbacks predictions · All Colorado Rockies predictions

MLB · Tuesday, September 22, 2026 · 8:41 PM · Final: 7-2

The model's call
Arizona Diamondbacks to win
Model confidence 62.3%
Books consensus 62.3%
Result Arizona Diamondbacks 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 Arizona DiamondbacksColorado Rockies
BetMGM -185 +150
BetRivers -195 +160
DraftKings -181 +149
ESPN BET -195 +165
Fanatics -180 +150
FanDuel -184 +154
Hard Rock Bet -185 +155
Caesars -190 +158

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
Diamondbacks −1.5
priced 52.2% to cover · 7 books, 1 on another number
Arizona Diamondbacks covered −1.5
Total · closing
O/U 10.5
priced 54.2% over · 4 books, 4 on another number
opened 11.5
Under 10.5 (9 scored)
Spread by book DiamondbacksRockies
BetMGM −1.5 -120 +1.5 +100
BetRivers −2 -105 +2 -117
DraftKings −1.5 -116 +1.5 -104
ESPN BET −1.5 -125 +1.5 +105
Fanatics −1.5 -120 +1.5 +100
FanDuel −1.5 -115 +1.5 -104
Hard Rock Bet −1.5 -120 +1.5 +100
Caesars −1.5 -120 +1.5 +102
Total by bookOverUnder
BetMGM 11 +100 11 -120
BetRivers 11 -120 11 -118
DraftKings 11 -105 11 -115
ESPN BET 10.5 -130 10.5 +110
Fanatics 11 -105 11 -115
FanDuel 10.5 -132 10.5 +108
Hard Rock Bet 10.5 -130 10.5 +105
Caesars 10.5 -130 10.5 +110

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 Arizona DiamondbacksColorado Rockies
Books consensus fair, de-vigged 62.3% 37.7%
Best book price incl. vig 64.3% 37.7%
Kalshi contract price 62.5% 37.5%
Polymarket contract price 62.5% 37.5%
Markets average 62.5% 37.5%

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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