This market refers to the tennis match between Arina Kostina and Salma Djoubri in the W15 Essen, Main Draw, originally scheduled for October 27, 2026 at 9:00AM ET. This market will resolve to 'Arina Kostina' if Arina Kostina advances against Salma Djoubri. This market will resolve to 'Salma Djoubri' if Salma Djoubri advances against Arina Kostina. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 10, 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.