Grass Court Championships: Aryna Sabalenka vs Nikola Bartunkova Match O/U 21.5

Event Rules

This market refers to the tennis match between Aryna Sabalenka and Nikola Bartunkova in the Grass Court Championships, originally scheduled for June 19, 2026 at 5:00AM ET. This market will resolve to 'Aryna Sabalenka' if Aryna Sabalenka advances against Nikola Bartunkova. This market will resolve to 'Nikola Bartunkova' if Nikola Bartunkova advances against Aryna Sabalenka. 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 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.