Shanghai Rolex Masters: Matteo Berrettini vs Brandon Nakashima

Kalshi — primary rule

If Matteo Berrettini wins the Berrettini vs Nakashima professional tennis match in the 2026 ATP Shanghai Round Of 64 after a ball has been played, then the market resolves to Yes.

Polymarket — resolution criteria

This market refers to the tennis match between Matteo Berrettini and Brandon Nakashima in the Shanghai Rolex Masters, originally scheduled for October 9, 2026 at 10:00PM ET. This market will resolve to 'Matteo Berrettini' if Matteo Berrettini advances against Brandon Nakashima. This market will resolve to 'Brandon Nakashima' if Brandon Nakashima advances against Matteo Berrettini. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 23, 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.