Four-wallet underdog push

This market refers to the tennis match between Ignacio Buse and Jakub Mensik in the Hamburg European Open, originally scheduled for May 20, 2026 at 4:00AM ET. This market will resolve to 'Ignacio Buse' if Ignacio Buse advances against Jakub Mensik. This market will resolve to 'Jakub Mensik' if Jakub Mensik advances against Ignacio Buse. 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 ATP Tour. A consensus of credible reporting may also be used.