Stefan Kozlov Ranking, Earnings, Records, Stats & Performance Trends
Age:27 years (01 Feb 1998)
Birthplace:Skopje, Macedonia
Residence:Pembroke Pines, FL, USA
Status:Active
Turned Pro:2013
Height:6'0" (183 cm)
Weight:174 lbs (79 kg)
Plays:Right-Handed
Backhand:Two-Handed
Coach:Andrei Kozlov, Nicolas Todero
Prize Money:$371,951
Career Statistics
Current Rank |  447 |
Main Tours | 0-0 |
Tour Finals | 0-0 |
Master | 0-0 |
Grand Slam | 0-0 |
Cups | 0-0 |
Futures | 5-4 |
Challengers | 5-5 |
Total | 338-258 |
Total Titles | 10 |
Favorite Surface |  (W 5) & (L 8) |
Kozlov Performance Breakdown
| Surface Record | Per % | W/L |
|---|---|---|
| Overall | 66.7% | 20/10 |
| Clay | 80.0% | 4/1 |
| Hard | 66.7% | 12/6 |
| Indoor | 66.7% | 4/2 |
| Grass | 0.0% | 0/1 |
| Round Record | Per % | W/L |
|---|---|---|
| Final | 100.0% | 1/0 |
| Semifinals | 100.0% | 1/0 |
| Quarterfinals | 33.3% | 1/2 |
| Second Round | 60.0% | 3/2 |
| First Round | 71.4% | 5/2 |
| Q3 Round | 50.0% | 3/3 |
| Q1 Round | 85.7% | 6/1 |
| Level Record | Per % | W/L |
|---|---|---|
| Total | 66.7% | 20/10 |
| Challengers | 63.6% | 14/8 |
| Futures | 100.0% | 5/0 |
| Cups | 0% | 0/0 |
| Grand Slam | 0% | 0/0 |
| Main Tour | 33.3% | 1/2 |
| Tour Finals | 0% | 0/0 |
| Masters | 0% | 0/0 |
| Opp. Rank Record | Per % | W/L |
|---|---|---|
| Vs Top.1 | 0% | 0/0 |
| Vs Top.5 | 0% | 0/0 |
| Vs Top.10 | 0% | 0/0 |
| Vs Top.20 | 0% | 0/0 |
| Vs Top.50 | 0% | 0/0 |
| Vs Top.100 | 0% | 0/0 |
Kozlov Historical Matches Played Records
(Q3) Chicago Challenger(08-04-25)
(Q1) Chicago Challenger(08-03-25)
(R1) Newport Challenger(07-07-25)
(Q3) Tyler Challenger(06-02-25)
(Q1) Tyler Challenger(06-01-25)
Kozlov Performance Stats Trends
Service Stats Trends
| Aces per Game | 0.19 | 63/339 |
| Double Faults Per Game | 0.19 | 63/339 |
| 1st Serve % | 66.4% | 1444/2176 |
| 1st Serve Win% | 65.3% | 943/1444 |
| 2nd Serve Win% | 48.0% | 351/732 |
| Serve Points Win% | 59.5% | 1294/2176 |
Return Stats Trends
| Opponent Aces / Game | 0.27 | 92/339 |
| Opponent Double Faults / Game | 0.30 | 103/339 |
| Opponent 1st Serve % | 61.0% | 1355/2220 |
| 1st Return Win % | 36.6% | 496/1355 |
| 2nd Return Win % | 55.5% | 480/865 |
| Return Points Win% | 44.0% | 976/2220 |
Break Points (Serve) Stats
| Break Points Saved / Game | 0.40 | 137/339 |
| Break Points Faced / Game | 0.69 | 234/339 |
| Break Points Save % | 58.5% | 137/234 |
| Service Hold % | 71.3% | 241.5/338.5 |
Break Points (Return) Stats
| Break Points Won / Game | 0.35 | 118/339 |
| Opponent Break Points / Game | 0.72 | 243/339 |
| Break Points Won % | 48.6% | 118/243 |
| Opponent Hold % | 65.1% | 220.5/338.5 |
Kozlov Surface Win/Loss Performance History
| YEAR | SUM. | HARD | CLAY | I.HARD | GRASS |
|---|---|---|---|---|---|
| 2025 | 20/10 | 12/6 | 4/1 | 4/2 | 0/1 |
| 2024 | 37/19 | 16/9 | 17/8 | 4/2 | 0/0 |
| 2023 | 6/12 | 1/6 | 0/0 | 5/6 | 0/0 |
| 2022 | 21/34 | 14/18 | 0/5 | 4/5 | 3/6 |
| 2021 | 41/15 | 20/12 | 5/2 | 16/1 | 0/0 |
| 2020 | 13/13 | 7/8 | 0/0 | 6/5 | 0/0 |
Kozlov Titles/Finals 2025
Titles
No titles happened.
Finals
No finals happened.
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