Karen Khachanov defeated Learner Tien 7-5, 4-6, 6(6)-7(8), 6-1, 6-4 in the R16 of the US Open 2026.
The 14th seed and the betting market's 60 percent pick, Tien, is out of the US Open, his serve broken nine times and his three-match run here finished. Khachanov took 9 of 12 break points to Tien's 5 of 14, including breaks in games 1 and 3 of the fourth for 1-0 and 3-0; when the favorite broke for 2-1 in the fifth, the answer came in game 4 for 2-2. Tien out-hit him 55 winners to 48 and won 34 of 43 at net, and still held only 17 of 26 service games. Khachanov, 3 hours 49 minutes on court, books a quarterfinal with Blockx, the No. 32.
Karen Khachanov: 9 aces, 48 winners, 63% first serves, 7 double faults, 9/12 break points. Learner Tien: 8 aces, 55 winners, 60% first serves, 8 double faults, 5/14 break points.
Profiles: Karen Khachanov · Learner Tien — US Open 2026
This is the first meeting between Karen Khachanov and Learner Tien.
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