This market refers to the tennis match between Benjamin Willwerth and Duncan Chan in the Sioux Falls, USA, Qualifying, originally scheduled for October 25, 2026 at 4:50PM ET. This market will resolve to 'Benjamin Willwerth' if Benjamin Willwerth advances against Duncan Chan. This market will resolve to 'Duncan Chan' if Duncan Chan advances against Benjamin Willwerth. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 8, 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.