This market refers to the tennis match between Aryna Sabalenka and Elena Rybakina in the US Open WTA, originally scheduled for September 12, 2026 at 4:00PM ET. This market will resolve to 'Aryna Sabalenka' if Aryna Sabalenka advances against Elena Rybakina. This market will resolve to 'Elena Rybakina' if Elena Rybakina advances against Aryna Sabalenka. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 26, 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.