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Detroit vs Chicago WS: Total Runs — Over 9.5 runs scored

Post
KalshiPolymarket ✓ Verified same-resolution Closes Sep 19, 2026
MarketMaster fair value61¢ vs live 60¢ on Polymarket
1.3% against the midpoint, -1.7% against the 63¢ ask you would actually pay, -2.9% after the 1.17¢ taker fee.
No edge after fees
Trade on Polymarket ↗
LIVE PRICES — YES
KalshiBEST YES PRICETrade ↗
37¢ last
BidAsk
YES37¢38¢
NO62¢63¢
$7,706 volume
PolymarketTrade ↗
40¢ last
BidAsk
YES37¢38¢
NO62¢63¢
$2,118 volume
Cross-venue spread 3.0¢· active arbitrage window
30-DAY PRICE HISTORY
HOW THIS RESOLVES

Kalshi — primary rule

If Detroit and Chicago WS collectively score more 9.5 runs in the Detroit vs Chicago WS professional baseball game originally scheduled for Sep 18, 2026 at 7:40 PM EDT, then the market resolves to Yes.

Polymarket — resolution criteria

In the upcoming MLB game between the Detroit Tigers and Chicago White Sox, scheduled for September 18 at 7:40 PM ET: This market will resolve to "Over" if the Detroit Tigers and Chicago White Sox combine to score 10 or more runs in this game. If the combined total is less than 10, 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 last37¢
Polymarket last40¢
Model fair value61¢
Model confidence35%
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.