M15 Madrid: Ryan Nijboer vs Mateo Luis Alvarez Sarmiento

This market refers to the tennis match between Ryan Nijboer and Mateo Luis Alvarez Sarmiento in the M15 Madrid, Main Draw, originally scheduled for September 3, 2026 at 4:00AM ET. This market will resolve to 'Ryan Nijboer' if Ryan Nijboer advances against Mateo Luis Alvarez Sarmiento. This market will resolve to 'Mateo Luis Alvarez Sarmiento' if Mateo Luis Alvarez Sarmiento advances against Ryan Nijboer. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 17, 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.