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Kansas City vs Houston — Kansas City

Post
KalshiPolymarket ✓ Verified same-resolution Closes Sep 18, 2026
LIVE PRICES — YES
KalshiTrade ↗
43¢ last
BidAsk
YES42¢43¢
NO57¢58¢
$3,924 volume
PolymarketBEST YES PRICETrade ↗
42¢ last
BidAsk
YES42¢42¢
NO58¢59¢
$2,188 volume
Cross-venue spread 1.5¢
CROSS-VENUE ARBITRAGE

Buy YES on Polymarket and NO on Kalshi — total cost 100¢ per $1 payout, locking +0.4¢ per contract before fees.

30-DAY PRICE HISTORY
HOW THIS RESOLVES

Kalshi — primary rule

If Kansas City wins the Kansas City vs Houston professional baseball game originally scheduled for Sep 17, 2026 at 7:15 PM EDT, then the market resolves to Yes.

Polymarket — resolution criteria

In the upcoming MLB game between the Kansas City Royals and Houston Astros, scheduled for September 17 at 7:15PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals win the game. This market will resolve to "Houston Astros" if the Houston Astros win the game. 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, or ends in a tie, this market will resolve 50-50. 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 spread1.5¢
Kalshi last43¢
Polymarket last42¢
Venues2
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The same question at a different strike, deadline or outcome — related, not the same contract. Prices are the latest YES.