This market refers to the tennis match between Madison Sieg and Vivian Wolff in the W50 Saint-Palais-sur-Mer, Main Draw, originally scheduled for September 1, 2026 at 12:00PM ET. This market will resolve to 'Madison Sieg' if Madison Sieg advances against Vivian Wolff. This market will resolve to 'Vivian Wolff' if Vivian Wolff advances against Madison Sieg. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 15, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.