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Arizona Diamondbacks vs. Pittsburgh Pirates: O/U 8.5

KalshiPolymarket Closes Jul 29, 2026
This market group is no longer actively tracked — final data shown. See live edges →
MarketMaster fair value45¢ vs live 41¢ on Polymarket
▲ +4.1% edge · Buy YES
Trade on Polymarket ↗
LIVE PRICES — YES
KalshiBEST YES PRICETrade ↗
34¢ last
BidAsk
YES34¢35¢
NO65¢66¢
$243,596 volume
PolymarketTrade ↗
40¢ last
BidAsk
YES35¢38¢
NO62¢65¢
$204,755 volume
Cross-venue spread 6.0¢· active arbitrage window
30-DAY PRICE HISTORY
HOW THIS RESOLVES

Kalshi — primary rule

If Arizona and Pittsburgh collectively score more 8.5 runs in the Arizona vs Pittsburgh professional baseball game originally scheduled for Jul 29, 2026 at 12:35 PM EDT, then the market resolves to Yes.

Polymarket — resolution criteria

In the upcoming MLB game between the Arizona Diamondbacks and Pittsburgh Pirates, scheduled for July 29 at 12:35 PM ET: This market will resolve to "Over" if the Arizona Diamondbacks and Pittsburgh Pirates combine to score 9 or more runs in this game. If the combined total is less than 9, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

Show full rules
STATS
Cross-venue spread6.0¢
Kalshi last34¢
Polymarket last40¢
Model fair value45¢
Model confidence52%
Venues2
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