This market refers to the tennis match between Andrea Guerrieri and Maks Kasnikowski in the Olbia, originally scheduled for October 14, 2026 at 5:00AM ET. This market will resolve to 'Andrea Guerrieri' if Andrea Guerrieri advances against Maks Kasnikowski. This market will resolve to 'Maks Kasnikowski' if Maks Kasnikowski advances against Andrea Guerrieri. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 28, 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.