Japan Open Tennis Championships: Tomas Etcheverry vs Stefanos Tsitsipas

Kalshi — primary rule

If Tomas Martin Etcheverry wins the Etcheverry vs Tsitsipas professional tennis match in the 2026 ATP Tokyo Round Of 32 after a ball has been played, then the market resolves to Yes.

Polymarket — resolution criteria

This market refers to the tennis match between Tomas Etcheverry and Stefanos Tsitsipas in the Japan Open Tennis Championships, originally scheduled for September 29, 2026 at 11:30PM ET. This market will resolve to 'Tomas Etcheverry' if Tomas Etcheverry advances against Stefanos Tsitsipas. This market will resolve to 'Stefanos Tsitsipas' if Stefanos Tsitsipas advances against Tomas Etcheverry. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 13, 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.