
Stefan Kozlov advanced when Ramkumar Ramanathan retired 6-1 6-7 5-3 in the Chicago CH qualifying round 1. Stefan Kozlov claimed a first win over Ramkumar Ramanathan in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-07-25 | Atlanta | Q1 | hard | Ramkumar Ramanathan | 6-0 6-1 |
| 2018-02-19 | Delray Beach | Q1 | hard | Ramkumar Ramanathan | 6-3 6-2 |
| 2018-02-17 | Delray Beach | Q16 | hard | Ramkumar Ramanathan | 6-3 6-2 |
Averages over each player's completed matches in the selected window (71 vs 27). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Kozlov S.: 6 days rest · 2 matches, 54 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