Medvedev vs Alcaraz — Daniil Medvedev

Kalshi — primary rule

If Daniil Medvedev wins the Medvedev vs Alcaraz professional tennis match in the 2026 ATP Vienna Semifinal after a ball has been played, then the market resolves to Yes.

Polymarket — resolution criteria

This market refers to the tennis match between Daniil Medvedev and Carlos Alcaraz in the Erste Bank Open, originally scheduled for October 31, 2026 at 5:00AM ET. This market will resolve to 'Daniil Medvedev' if Daniil Medvedev advances against Carlos Alcaraz. This market will resolve to 'Carlos Alcaraz' if Carlos Alcaraz advances against Daniil Medvedev. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 14, 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.