Singapore Open: Oleksandra Oliynykova vs Maja Chwalinska

Kalshi — primary rule

If Oleksandra Oliynykova wins the Oliynykova vs Chwalinska professional tennis match in the 2026 WTA Singapore Round Of 16 after a ball has been played, then the market resolves to Yes.

Polymarket — resolution criteria

This market refers to the tennis match between Oleksandra Oliynykova and Maja Chwalinska in the Singapore Open, originally scheduled for September 22, 2026 at 10:00PM ET. This market will resolve to 'Oleksandra Oliynykova' if Oleksandra Oliynykova advances against Maja Chwalinska. This market will resolve to 'Maja Chwalinska' if Maja Chwalinska advances against Oleksandra Oliynykova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 6, 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.