Madrid Open: Elvina Kalieva vs Katerina Siniakova

This market refers to the tennis match between Elvina Kalieva and Katerina Siniakova in the Madrid Open, originally scheduled for April 22, 2026 at 11:30AM ET. This market will resolve to 'Elvina Kalieva' if Elvina Kalieva advances against Katerina Siniakova. This market will resolve to 'Katerina Siniakova' if Katerina Siniakova advances against Elvina Kalieva. 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 det