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Pittsburgh Pirates vs. St. Louis Cardinals: O/U 7.5

Post ☰ See all 3 outcomes in Pittsburgh vs St. Louis: Total Runs →
KalshiPolymarket Closes Aug 29, 2026
MarketMaster fair value50¢ vs live 49¢ on Polymarket
▲ +1.4% edge · Buy NO
Trade on Polymarket ↗
LIVE PRICES — YES
KalshiBEST YES PRICETrade ↗
48¢ last
BidAsk
YES48¢49¢
NO51¢52¢
$268,037 volume
PolymarketTrade ↗
51¢ last
BidAsk
YES50¢51¢
NO49¢50¢
$163,607 volume
Cross-venue spread 3.0¢· active arbitrage window
CROSS-VENUE ARBITRAGE

Buy YES on Kalshi and NO on Polymarket — total cost 99¢ per $1 payout, locking +1.0¢ per contract before fees.

30-DAY PRICE HISTORY
HOW THIS RESOLVES

Kalshi — primary rule

If Pittsburgh and St. Louis collectively score more 7.5 runs in the Pittsburgh vs St. Louis professional baseball game originally scheduled for Aug 28, 2026 at 8:15 PM EDT, then the market resolves to Yes.

Polymarket — resolution criteria

In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for August 28 at 8:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 8 or more runs in this game. If the combined total is less than 8, 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 spread3.0¢
Kalshi last48¢
Polymarket last51¢
Model fair value50¢
Model confidence53%
Venues2
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