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Prediction market on polymarket. This market refers to the tennis match between Matteo Arnaldi and Rei Sakamoto in the Japan Open Tennis Championships, originally scheduled for September 29, 2026 at 9:00PM ET. This market will resolve to “Matteo Arnaldi” if Matteo Arnaldi wins set 2. It will resolve to “Rei Sakamoto” if Rei Sakamoto wins set 2. If the match begins but set 2 is not completed with a winner determined (including the match ending before set 2 is reached), this market will resolve 50-50. If the match is canceled (not played at all) or play has not begun by October 13, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve 50-50. Resolution will be based on official ATP match statistics.
Resolves: 10/7/2026.