This market will resolve to "O 81.5" if the Arizona Diamondbacks win more than 81.5 games during the 2026 MLB Regular Season. If at any point it becomes statistically impossible for the Arizona Diamondbacks to record more than 81.5 wins per the rules of the MLB, the corresponding market will resolve to "U 81.5". If the MLB Regular Season is cancelled, partially completed, or postponed after November 30, 2026, 11:59 PM ET, this market will resolve to "50-50". The resolution source will be official information from Major League Baseball (https://www.mlb.com/standings/); however a consensus of credible reporting may also be used.