This market refers to the tennis match between Mark Negulescu and Adrian Oltean Achacollo in the M15 Heraklion, Qualifying, originally scheduled for November 8, 2026 at 4:30AM ET. This market will resolve to 'Mark Negulescu' if Mark Negulescu advances against Adrian Oltean Achacollo. This market will resolve to 'Adrian Oltean Achacollo' if Adrian Oltean Achacollo advances against Mark Negulescu. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 22, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.