- US Open ATP: Karen Khachanov vs Learner Tien39¢
- US Open ATP: Completed Match: Karen Khachanov vs Learner Tien50¢
- Set 1 Winner: Khachanov vs Tien45¢
- Set 2 Winner: Khachanov vs Tien44¢
- Khachanov vs. Tien: Set 2 Games O/U 9.550¢
- Khachanov vs. Tien: Set 2 Games O/U 10.550¢
- Karen Khachanov vs. Learner Tien: Total Sets O/U 3.567¢
- Karen Khachanov vs. Learner Tien: Total Sets O/U 4.529¢
- Khachanov vs. Tien: Set 1 Games O/U 8.577¢
- Khachanov vs. Tien: Set 1 Games O/U 9.555¢
- Khachanov vs. Tien: Set 3 Games O/U 8.550¢
- Khachanov vs. Tien: Set 3 Games O/U 9.550¢
This market refers to the tennis match between Karen Khachanov and Learner Tien in the US Open ATP, originally scheduled for September 7, 2026 at 11:00AM ET. This market will resolve to 'Karen Khachanov' if Karen Khachanov advances against Learner Tien. This market will resolve to 'Learner Tien' if Learner Tien advances against Karen Khachanov. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 21, 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.
Learner Tien enters this US Open fourth-round clash with strong momentum after three straight victories on home hard courts, including a five-set comeback against Jakub Mensik that featured resilient baseline defense and support from the New York crowd. The 20-year-old American, ranked No. 15 and seeded 14th, has posted a 29-15 record in 2026 and reached the Australian Open quarterfinals earlier in the year. Karen Khachanov, ranked around No. 50, has revived his form with an upset of third seed Felix Auger-Aliassime in the second round after a difficult season marked by an 18-20 win-loss mark entering the event. The 30-year-old Russian brings Grand Slam experience, including a 2022 US Open semifinal, but lacks recent consistency and faces a first meeting against a younger opponent excelling in return play and counterpunching on the fast hard courts.