

Karen Khachanov defeated Frances Tiafoe 6-3 6-4 3-6 7-6 in the Australian Open round of 32 on hard. The upset overturned the form book — Frances Tiafoe came in ranked #23, defending last year's round of 64. Karen Khachanov extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-06-28 | Wimbledon | R32 | grass | Karen Khachanov | 6-3 6-4 6-4 |
| 2018-07-02 | Wimbledon | R32 | grass | Karen Khachanov | 4-6 4-6 7-6 6-2 6-1 |
Averages over each player's completed matches in the selected window (193 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Khachanov K.: 5 days rest · 1 match, 34 games (7d) · Tiafoe F.: played today · 3 matches, 68 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About