This market refers to the tennis match between Gilles Arnaud Bailly and Alex Barrena in the Porto, originally scheduled for August 31, 2026 at 5:00AM ET. This market will resolve to 'Gilles Arnaud Bailly' if Gilles Arnaud Bailly advances against Alex Barrena. This market will resolve to 'Alex Barrena' if Alex Barrena advances against Gilles Arnaud Bailly. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 14, 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.