Cincinnati Open (Doubles): Hsieh/Ostapenko vs Guo/Mladenovic

This market refers to the doubles tennis match between Hsieh/Ostapenko and Guo/Mladenovic in the Cincinnati Open, originally scheduled for August 20, 2026 at 3:00PM ET. This market will resolve to 'Hsieh/Ostapenko' if the team of Hsieh/Ostapenko advances against Guo/Mladenovic. This market will resolve to 'Guo/Mladenovic' if the team of Guo/Mladenovic advances against Hsieh/Ostapenko. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50. If the match begins but is not…