China Open: Nikola Bartunkova vs Aryna Sabalenka Match O/U 21.5

Event Rules

This market refers to the tennis match between Nikola Bartunkova and Aryna Sabalenka in the China Open, originally scheduled for October 3, 2026 at 11:00PM ET. This market will resolve to 'Nikola Bartunkova' if Nikola Bartunkova advances against Aryna Sabalenka. This market will resolve to 'Aryna Sabalenka' if Aryna Sabalenka advances against Nikola Bartunkova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 17, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.