Stefan Kozlov Ranking, Earnings, Records, Stats & Performance Trends
Stefan Kozlov
Stats
| Current Rank | 424 |
| Best Rank | 103 (17 Jul 2022) |
| Titles | 10  |
| Grand Slams | 0 |
| Main Tour | 0 |
| Masters | 0 |
| Tour Finals | 0 |
| Challengers | 5 |
| Futures | 5 |
Recent Form
L
L
W
L
W
W
W
W
W
W
| Age | 27(31 Jan 1998) |
| Country |  United States |
| Birthplace | Skopje, Macedonia |
| Height | 6'0" (183 cm) |
| Weight | 174 lbs (79 kg) |
| Plays | Right-Handed |
| Backhand | Two-Handed |
| Favorite Surface |  Grass 38% |
| Coach | Andrei Kozlov, Nicolas Todero |
| Turned Pro | 2013 |
| Player Status | Active |
| Prize Money | $371,951 |
Kozlov Performance Breakdown
Kozlov Surface Record
W/L
| Overall | 56.6% | 337 / 258 |
| Hard | 55.4% | 165 / 133 |
| Clay | 58.8% | 77 / 54 |
| Indoor | 63.0% | 80 / 47 |
| Grass | 38.5% | 15 / 24 |
Kozlov Round Record
W/L
| Final | 52.6% | 10 / 9 |
| Semi-final | 64.5% | 20 / 11 |
| Quarter-final | 47.7% | 31 / 34 |
| 3rd Round | 50.0% | 3 / 3 |
| 2nd Round | 60.7% | 68 / 44 |
| 1st Round | 56.3% | 111 / 86 |
| Qualies Final | 61.7% | 29 / 18 |
| Qualies Round 2 | 54.5% | 12 / 10 |
| Qualies Round 1 | 55.2% | 53 / 43 |
Kozlov Level Record
W/L
| Grand Slam | 31.0% | 9 / 20 |
| Masters | 23.5% | 4 / 13 |
| Main Tour | 38.8% | 26 / 41 |
| Cups | 0.0% | 0 / 0 |
| Challengers | 57.9% | 197 / 143 |
| Futures | 71.1% | 101 / 41 |
Kozlov Opp. Rank Record
W/L
| Vs No.1 | 0.0% | 0 / 1 |
| Vs Top.5 | 0.0% | 0 / 2 |
| Vs Top.10 | 0.0% | 0 / 4 |
| Vs Top.20 | 0.0% | 0 / 6 |
| Vs Top.50 | 17.6% | 3 / 14 |
| Vs Top.100 | 30.4% | 17 / 39 |
Kozlov Historical Matches Played Records
| opponent | score | h2h | |||
Newport Challenger 06 Jul 25 | |||||
| R1 | M. Krueger 7 |  Stats | 6-1 3-6 6-1 | H2H | |
 Tyler Challenger 01 Jun 25 | |||||
| QF |  A. N. Tudorica | Stats | 7-5 6-3 | H2H | |
| Q1 | D. Milavsky | Stats | 6-3 6-7(7) 6-3 | H2H | |
Little Rock Challenger 25 May 25 | |||||
| R2 |  A. Andrade | Stats | 6-1 4-6 7-5 | H2H | |
| QF |  E. Ejupovic | Stats | 6-4 7-6(5) | H2H | |
| R1 |  A. Dougaz 7 | Stats | 5-7 6-3 6-2 | H2H | |
| Q1 |  K. Pannu | Stats | 7-6(3) 2-6 6-2 | H2H | |
M25 Xalapa 11 May 25 | |||||
| F |  S. R. Taverna 1 | Stats | 6-7(4) 6-4 6-4 | H2H | |
| QF | A. Mayo 3 | Stats | 6-4 6-4 | H2H | |
| SF | M. Mckennon 8 | Stats | 2-6 6-1 6-4 | H2H | |
Kozlov Performance Stats Trends
Kozlov Service Stats Trends
| Aces per Game | 0.18 | 57 / 316 |
| Double Faults Per Game | 0.19 | 61 / 316 |
| 1st Serve % | 65.5% | 1309 / 1997 |
| 1st Serve Win% | 65.5% | 858 / 1309 |
| 2nd Serve Win% | 48.4% | 333 / 688 |
| Serve Points Win% | 59.6% | 1191 / 1997 |
Kozlov Return Stats Trends
| Opponent Aces / Game | 0.28 | 88 / 316 |
| Opponent Double Faults / Game | 0.31 | 99 / 316 |
| Opponent 1st Serve % | 61.0% | 1231 / 2017 |
| 1st Return Win % | 36.6% | 450 / 1231 |
| 2nd Return Win % | 55.5% | 436 / 786 |
| Return Points Win% | 43.9% | 886 / 2017 |
Kozlov Break Points (Serve) Stats
| Break Points Saved / Game | 0.40 | 127 / 316 |
| Break Points Faced / Game | 0.69 | 217 / 316 |
| Break Points Save % | 58.5% | 127 / 217 |
| Service Hold % | 71.6% | 226 / 316 |
Kozlov Break Points (Return) Stats
| Break Points Won / Game | 0.34 | 107 / 316 |
| Opponent Break Points / Game | 0.69 | 219 / 316 |
| Break Points Won % | 48.9% | 107 / 219 |
| Opponent Hold % | 66.2% | 209 / 316 |
Stefan Kozlov Surface Win/Loss Performance History
| year | sum. | hard | clay | i.hard | grass |
| 2025 | 19/10 | 11/5 | 4/2 | 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 |
| 2019 | 21/18 | 13/9 | 4/4 | 4/5 | 0/0 |
| 2018 | 14/26 | 5/12 | 7/6 | 1/4 | 1/4 |
| 2017 | 31/28 | 15/13 | 8/8 | 3/2 | 5/5 |
| 2016 | 58/32 | 28/16 | 10/6 | 16/5 | 4/5 |
| 2015 | 44/27 | 15/12 | 10/5 | 17/8 | 2/2 |
| 2014 | 17/15 | 15/10 | 2/3 | 0/2 | 0/0 |
| 2013 | 13/8 | 3/2 | 10/5 | 0/0 | 0/1 |
| 2012 | 2/1 | 2/1 | 0/0 | 0/0 | 0/0 |
Kozlov Singles Titles/Finals
Kozlov Titles
No Titles
Kozlov Finals
No Finals
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