This market refers to the tennis match between Niels Visker and Pedro Vives Marcos in the Porto, originally scheduled for September 3, 2026 at 5:00AM ET. This market will resolve to 'Niels Visker' if Niels Visker advances against Pedro Vives Marcos. This market will resolve to 'Pedro Vives Marcos' if Pedro Vives Marcos advances against Niels Visker. 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.