This market refers to the tennis match between Samira De Stefano and Antonia Vergara Rivera in the ITF W75 Kursumlijska Banja 3 Women, originally scheduled for August 18, 2026 at 5:00AM ET. This market will resolve to 'Samira De Stefano' if Samira De Stefano advances against Antonia Vergara Rivera. This market will resolve to 'Antonia Vergara Rivera' if Antonia Vergara Rivera advances against Samira De Stefano. 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.