This market refers to the tennis match between Luca Castelnuovo and Akira Santillan in the Wuning 3, originally scheduled for October 4, 2026 at 10:00PM ET. This market will resolve to 'Luca Castelnuovo' if Luca Castelnuovo advances against Akira Santillan. This market will resolve to 'Akira Santillan' if Akira Santillan advances against Luca Castelnuovo. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 18, 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.