This market refers to the tennis match between Nikita Mashtakov and Juan Manuel La Serna in the Plovdiv 3, originally scheduled for September 3, 2026 at 4:00AM ET. This market will resolve to 'Nikita Mashtakov' if Nikita Mashtakov advances against Juan Manuel La Serna. This market will resolve to 'Juan Manuel La Serna' if Juan Manuel La Serna advances against Nikita Mashtakov. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 17, 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 ATP Tour. A consensus of credible reporting may also be used.