Set 1 Winner: Borisiouk/Ianin vs Jeong/Matsuda

This market refers to the tennis match between Borisiouk/Ianin and Jeong/Matsuda in the Phan Thiet 4, originally scheduled for September 17, 2026 at 2:00AM ET. This market will resolve to “Borisiouk/Ianin” if Borisiouk/Ianin wins the first set. It will resolve to “Jeong/Matsuda” if Jeong/Matsuda wins the first set. If the match begins but is not completed, and the first set is concluded with a winner determined, this market will resolve based on that completed set. If the first set is not completed for any reason, this market will resolve 50-50. If the match is canceled (not played at all) or play has not begun by October 1, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve 50-50. Resolution will be based on official Challenger match statistics.