Timofeeva vs Kostovic — Maria Timofeeva

Kalshi — primary rule

If Maria Timofeeva wins the Timofeeva vs Kostovic professional tennis match in the 2026 WTA Guangzhou Round Of 32 after a ball has been played, then the market resolves to Yes.

Polymarket — resolution criteria

This market refers to the tennis match between Maria Timofeeva and Teodora Kostovic in the Guangzhou Open, originally scheduled for October 25, 2026 at 11:00PM ET. This market will resolve to 'Maria Timofeeva' if Maria Timofeeva advances against Teodora Kostovic. This market will resolve to 'Teodora Kostovic' if Teodora Kostovic advances against Maria Timofeeva. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 8, 2026, 11:59 PM ET (14 days after the scheduled start), 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 WTA Tour. A consensus of credible reporting may also be used.