This market refers to the tennis match between Valeriya Strakhova and Sofia Costoulas in the Queretaro, originally scheduled for October 27, 2026 at 3:30PM ET. This market will resolve to 'Valeriya Strakhova' if Valeriya Strakhova advances against Sofia Costoulas. This market will resolve to 'Sofia Costoulas' if Sofia Costoulas advances against Valeriya Strakhova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 10, 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 WTA Tour. A consensus of credible reporting may also be used.