Phan Thiet 4: Khumoun Sultanov vs Hunter Heck Match O/U 21.5

Event Rules

This market refers to the tennis match between Khumoun Sultanov and Hunter Heck in the Phan Thiet 4, originally scheduled for September 15, 2026 at 12:30AM ET. This market will resolve to 'Khumoun Sultanov' if Khumoun Sultanov advances against Hunter Heck. This market will resolve to 'Hunter Heck' if Hunter Heck advances against Khumoun Sultanov. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 29, 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.