Sao Paulo Open: Suzan Lamens vs Solana Sierra

Kalshi — primary rule

If Suzan Lamens wins the Lamens vs Sierra professional tennis match in the 2026 WTA Sao Paulo 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 Suzan Lamens and Solana Sierra in the Sao Paulo Open, originally scheduled for September 17, 2026 at 9:00AM ET. This market will resolve to 'Suzan Lamens' if Suzan Lamens advances against Solana Sierra. This market will resolve to 'Solana Sierra' if Solana Sierra advances against Suzan Lamens. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 1, 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.