Washington Nationals vs. St. Louis Cardinals: O/U 10.5

Kalshi — primary rule

If Washington and St. Louis collectively score more 10.5 runs in the Washington vs St. Louis professional baseball game originally scheduled for Sep 20, 2026 at 2:15 PM EDT, then the market resolves to Yes.

Polymarket — resolution criteria

In the upcoming MLB game between the Washington Nationals and St. Louis Cardinals, scheduled for September 20 at 2:15 PM ET: This market will resolve to "Over" if the Washington Nationals and St. Louis Cardinals combine to score 11 or more runs in this game. If the combined total is less than 11, 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.