Istanbul: Donna Vekic vs Guiomar Maristany

This market refers to the tennis match between Donna Vekic and Guiomar Maristany in the Istanbul, originally scheduled for May 9, 2026 at 6:30AM ET. This market will resolve to 'Donna Vekic' if Donna Vekic advances against Guiomar Maristany. This market will resolve to 'Guiomar Maristany' if Guiomar Maristany advances against Donna Vekic. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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.