This market refers to the tennis match between Marta Kostyuk and Mirra Andreeva in the Cincinnati Open, originally scheduled for August 19, 2026 at 11:00AM ET. This market will resolve to 'Marta Kostyuk' if Marta Kostyuk advances against Mirra Andreeva. This market will resolve to 'Mirra Andreeva' if Mirra Andreeva advances against Marta Kostyuk. 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 completed, and one player advances due...