Set 1 Winner: Vallejo vs Cobolli

Prediction market on polymarket. This market refers to the tennis match between Adolfo Vallejo and Flavio Cobolli in the Madrid Open, originally scheduled for April 27, 2026 at 5:00AM ET. This market will resolve to “Vallejo” if Adolfo Vallejo wins the first set. It will resolve to “Cobolli” if Flavio Cobolli wins the first set. If the match begins but is not completed, and the first set is concluded with a winner determined, this market will resolve based on that completed set. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled (not played at all) or is delayed beyond 7 days from the scheduled date without play beginning, this market will resolve 50-50. Resolution will be based on official ATP match statistics.

Liquidity: $5,546.63. Resolves: 5/4/2026.