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Prediction market on polymarket. This market refers to the tennis match between Kimberly Birrell and Petra Marcinko in the US Open WTA, originally scheduled for August 30, 2026 at 11:00AM ET. This market will resolve to "Birrell" if Kimberly Birrell wins by 2 or more sets than Petra Marcinko, based on the final completed score. Otherwise, it will resolve to "Marcinko." If the match begins but is not completed due to retirement, default, or disqualification, this market will resolve 50-50, unless the outcome of this market has already been unconditionally determined by the completed portion of play. For example, if the deciding set has begun when the match ends, Kimberly Birrell can no longer win by 2 or more sets, and this market will resolve to "Marcinko." If the match is canceled before play begins, or a result has not been determined by September 13, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve 50-50. Resolution will be based on official Grand Slam results.
Resolves: 9/6/2026.