ATP
Stefan Kozlov
28.7 years old Date of birth: February 1, 1998- Current ATP ranking
- 273
- Points (live)
- 205
- +10 since the start of the tournament
Photo: si.robi / Wikimedia Commons, CC BY-SA 2.0
Profile
- Best ranking
- No. 278 (October 19, 2026)
- Matches 2021-2025
- 7
- Wins 2021-2025
- 1 (14%)
- Titles / finals 2021-2025
- 0 / 0
Matches, wins, titles and finals: completed seasons in Grand Slam, Masters 1000, ATP 500 and 250 events tracked by the site, walkovers excluded. Best ranking: from the history saved by the site.
Stefan Kozlov is No. 274 in the ATP rankings with 205 points. Ahead is Alastair Gray (No. 273) with 1 more point; behind is Aidan Mayo (No. 275) with 0 fewer. Up 13 places since September 9, 2026. Last 10 matches: 2 wins and 8 losses.
Ranking trend
Points trend
Current tournament progress
Round of 16 (eliminated)
- Next (next round)
- —
- Max (if they win the tournament)
- —
Last match
Record by season and surface
| Season | W-L | Win % | Hard | Titles | Finals |
|---|---|---|---|---|---|
| 2022 | 1-5 | 17% | 1-5 | 0 | 0 |
| 2021 | 0-1 | 0% | 0-1 | 0 | 0 |
| Total | 1-6 | 14% | 1-6 | 0 | 0 |
Completed seasons; Grand Slams, Masters 1000, ATP 500 and 250 (no ATP Finals or Challengers). Walkovers excluded. By surface: only events whose court the calendar reports.
Form
Last 15 matches
3 wins, 12 losses
Balance −9
The line starts at 0, goes up by one for every win and down by one for every loss. Walkovers excluded.
Recent matches
| Result | Round | Opponent | Score | Head to head |
|---|---|---|---|---|
| Sioux Falls Challenger 2026 · Challenger 100 · Indoor | ||||
| L | Round of 16 | Max Hans Rehberg | 7-5 6-4 | H2H |
| W | R32 | Murphy Cassone | 4-6 6-3 3-0 ret. | H2H |
| Columbus Challenger 2026 · Challenger 75 · Indoor | ||||
| L | Round of 16 | Mitchell Krueger | 6-2 3-6 6-3 | H2H |
| W | R32 | James Kent Trotter | 6-3 6-2 | H2H |
| San Diego 2 Challenger 2026 · Challenger 75 · Hard | ||||
| L | R32 | Colton Smith | 6-4 6-2 | H2H |
| Tiburon Challenger 2026 · Challenger 125 · Hard | ||||
| L | R32 | Darwin Blanch | 6-3 2-6 7-6(10) | H2H |
| Granby Challenger 2024 · Challenger 75 · Hard | ||||
| L | R32 | Nicolas Mejia | 6-1 6-2 | H2H |
| Merida Challenger 2024 · Challenger 50 · Clay | ||||
| L | Quarterfinal | Juan Pablo Ficovich | 7-6(6) 6-2 | H2H |
| San Diego Open - San Diego 2022 · 250 · Hard | ||||
| L | R32 | Jeff Wolf | 6-2 7-6(6) | H2H |
| U.S. Open - New York 2022 · Slam · Hard | ||||
| L | R128 | Daniil Medvedev | 6-2 6-4 6-0 | H2H |
Matches from the tournaments tracked by the site, most recent first.
Season results
| Year | Tournament | Round | Points |
|---|---|---|---|
| 2026 | Sioux Falls Challenger · Challenger 100 | Round of 16 | 10 |
| 2026 | Columbus Challenger · Challenger 75 | Round of 16 | 8 |
| 2026 | San Diego 2 Challenger · Challenger 75 | R32 | 3 |
| 2026 | Tiburon Challenger · Challenger 125 | R32 | 6 |
Ranking neighbours
| Pos. | Player | Points | Gap |
|---|---|---|---|
| 272 |  Buvaysar Gadamauri | 207 | +2 |
| 273 |  Alastair Gray | 206 | +1 |
| 274 | Stefan Kozlov | 205 | — |
| 275 | Aidan Mayo | 205 | 0 |
| 276 |  Mili Poljicak | 202 | -3 |
Most played rivalries
- Mitchell Krueger (0-1 in 1)
- Daniil Medvedev (0-1 in 1)
- Grigor Dimitrov (1-0 in 1)