Tiafoe vs Shelton — Frances Tiafoe

Kalshi — primary rule

If Frances Tiafoe wins the Tiafoe vs Shelton professional tennis match in the 2026 US Open Men Singles Semifinal after a ball has been played, then the market resolves to Yes.

Polymarket — resolution criteria

This market refers to the tennis match between Frances Tiafoe and Ben Shelton in the US Open ATP, originally scheduled for September 11, 2026 at 3:00PM ET. This market will resolve to 'Frances Tiafoe' if Frances Tiafoe advances against Ben Shelton. This market will resolve to 'Ben Shelton' if Ben Shelton advances against Frances Tiafoe. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 25, 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 ATP Tour. A consensus of credible reporting may also be used.