This market refers to the tennis match between Marta Kostyuk and Viktorija Golubic in the Roland Garros WTA, originally scheduled for May 29, 2026 at 5:00AM ET. This market will resolve to “Kostyuk” if Marta Kostyuk wins the first set. It will resolve to “Golubic” if Viktorija Golubic 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 Grand Slam match statistics.

Source: official resolution criteria from Polymarket. Always verify on the source page before trading.