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Boston Red Sox vs. Toronto Blue Jays: O/U 8.5

Post ☰ See all 3 outcomes in Boston vs Toronto: Total Runs →
KalshiPolymarket Closes Aug 13, 2026
LIVE PRICES — YES
KalshiBEST YES PRICETrade ↗
43¢ last
BidAsk
YES43¢44¢
NO56¢57¢
$23,751 volume
PolymarketTrade ↗
44¢ last
BidAsk
YES43¢44¢
NO56¢57¢
$38,640 volume
Cross-venue spread 1.0¢
30-DAY PRICE HISTORY
HOW THIS RESOLVES

Kalshi — primary rule

If Boston and Toronto collectively score more 8.5 runs in the Boston vs Toronto professional baseball game originally scheduled for Aug 13, 2026 at 3:07 PM EDT, then the market resolves to Yes.

Polymarket — resolution criteria

In the upcoming MLB game between the Boston Red Sox and Toronto Blue Jays, scheduled for August 13 at 3:07 PM ET: This market will resolve to "Over" if the Boston Red Sox and Toronto Blue Jays 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 spread1.0¢
Kalshi last43¢
Polymarket last44¢
Venues2
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