4-wallet Lulu Sun cluster

This market refers to the tennis match between Ksenia Efremova and Lulu Sun in the Madrid Open, Qualification, originally scheduled for April 20, 2026 at 11:30AM ET. This market will resolve to 'Ksenia Efremova' if Ksenia Efremova advances against Lulu Sun. This market will resolve to 'Lulu Sun' if Lulu Sun advances against Ksenia Efremova. 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.