Medvedev vs Safiullin — Daniil Medvedev

Kalshi — primary rule

If Daniil Medvedev wins the Medvedev vs Safiullin professional tennis match in the 2026 ATP Hangzhou 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 Roman Safiullin in the Hangzhou Open, originally scheduled for September 28, 2026 at 7:30AM ET. This market will resolve to 'Daniil Medvedev' if Daniil Medvedev advances against Roman Safiullin. This market will resolve to 'Roman Safiullin' if Roman Safiullin 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 October 12, 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.