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Prediction market on polymarket. This market refers to the tennis match between Mary Stoiana and Katerina Siniakova in the Japan Women's Open, originally scheduled for October 23, 2026 at 1:30AM ET. This market will resolve to “Mary Stoiana” if Mary Stoiana wins the first set. It will resolve to “Katerina Siniakova” if Katerina Siniakova 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 play has not begun by November 6, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve 50-50. Resolution will be based on official WTA match statistics. This market may resolve only when the listed period of play has concluded and the result can be definitively determined by the listed resolution source(s).
Resolves: 10/30/2026.