This market refers to the tennis match between Mona Barthel and Samira De Stefano in the Ljubljana, originally scheduled for September 20, 2026 at 6:00AM ET. This market will resolve to 'Mona Barthel' if Mona Barthel advances against Samira De Stefano. This market will resolve to 'Samira De Stefano' if Samira De Stefano advances against Mona Barthel. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 4, 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.