ATP Tour
Stefan Kozlov
#295
ATP World Ranking - 189 pts
Player Archetype
🪃 Counterpuncher
Turns defense into offense. Absorbs pace, redirects with precision, and thrives in long rallies by letting opponents beat themselves. Excels at converting break points when they matter most.
Elite BP conversionStrong return gameDefensive consistencyRally tolerance
Strong against
🏃 Pusher70%
🧱 The Wall55%
Weak against
🤖 Servebot43%
👑 The Complete Package44%
Player Overview
Age
28
Height
6'0" (183 cm)
Weight
79 kg (174 lbs)
Plays
Right-Handed, Two-Handed BH
Turned Pro
2013
Career-High Ranking
#103 (2022-07-18)
Record 2015-2026
271
Wins
221
Losses
55.1%
Win %
0
Titles
Win / Loss by Year
Career record broken down by surface
| Year | Summary | Clay | Hard | Grass |
|---|---|---|---|---|
| 2026 | 21/21 | 5/6 | 13/14 | 3/1 |
| 2025 | 20/12 | 5/2 | 15/9 | 0/1 |
| 2024 | 41/18 | 21/9 | 20/9 | - |
| 2023 | 7/10 | - | 7/10 | - |
| 2022 | 26/39 | 0/4 | 22/27 | 4/8 |
| 2021 | 46/16 | 0/2 | 46/14 | - |
| 2020 | 9/9 | - | 9/9 | - |
| 2019 | 15/15 | 1/2 | 14/13 | - |
| 2018 | 13/26 | 7/6 | 5/16 | 1/4 |
| 2017 | 31/28 | 8/8 | 18/15 | 5/5 |
| 2016 | 38/28 | 8/5 | 26/18 | 4/5 |
| 2015 | 10/15 | 0/3 | 8/10 | 2/2 |
| Career | 277/237 | 55/47 | 203/164 | 19/26 |
Serve & Return
Averages · Last 90 days (8 matches)
Serve
1st Serve In-
1st Serve Pts Won-
2nd Serve Pts Won-
Break Points Saved-
Aces / Match2.0
Double Faults / Match2.8
Avg 1st Serve-
Max Serve Speed-
Return
1st Return Pts Won-
2nd Return Pts Won-
Break Points Converted-
Rally
Winners / Match-
Unforced Errors / Match-
Net Pts Won %-
Total Pts Won %-
Prop Research
Career hit rates on common betting markets · 260 serve-stat matches
Stefan Kozlov has served 3+ aces in 43.5% of career matches and 5+ aces in 22.3%.
Ace Totals
| Outcome | Hit rate | Matches |
|---|---|---|
| 1 or more | 81% | 211/260 |
| 3 or more | 44% | 113/260 |
| 5 or more | 22% | 58/260 |
| 10 or more | 2% | 4/260 |
| 15 or more | 0% | 0/260 |
| 20 or more | 0% | 0/260 |
Double Fault Totals
| Outcome | Hit rate | Matches |
|---|---|---|
| 1 or more | 94% | 245/260 |
| 2 or more | 81% | 211/260 |
| 3 or more | 65% | 170/260 |
| 5 or more | 35% | 91/260 |
| 8 or more | 10% | 25/260 |
| 10 or more | 4% | 9/260 |
Total Sets
| Outcome | Hit rate | Matches |
|---|---|---|
| 2 Sets | 62% | 315/512 |
| 3 Sets | 38% | 193/512 |
Set Betting
| Outcome | Hit rate | Matches |
|---|---|---|
| 2-0 | 31% | 156/512 |
| 2-1 | 23% | 116/512 |
| 1-2 | 14% | 72/512 |
| 0-2 | 31% | 157/512 |
Match/Set Winner
| Outcome | Hit rate | Matches |
|---|---|---|
| 1st Set Winner | 50% | 256/514 |
| 2nd Set Winner | 50% | 255/513 |
| 3rd Set Winner | 61% | 120/197 |
Recent Matches
Last 10 results
FormLWLLL
| Date | Tournament | Round | Opponent | Surface | Score | Result |
|---|---|---|---|---|---|---|
| Aug 13, 2026 | Brownsburg Challenger | 2nd Round | Harry Wendelken | Hard | 62 46 16 | L |
| Aug 12, 2026 | Brownsburg Challenger | 1st Round | Aidan Mayo | Hard | 63 57 62 | W |
| Jul 21, 2026 | Bloomfield Hills Challenger | 1st Round | Alan Magadan | Hard | 63 16 67 | L |
| Jul 14, 2026 | Pozoblanco Challenger | 1st Round | Yi Zhou | Hard | 36 63 46 | L |
| Jul 12, 2026 | Bundesliga - men | Tommaso Compagnucci | Clay | 57 67 | L | |
| Jul 10, 2026 | Newport Challenger | 2nd Round | Jacob Fearnley | Grass | 63 36 26 | L |
| Jul 9, 2026 | Newport Challenger | 1st Round | Yibing Wu | Grass | 64 26 64 | W |
| Jul 7, 2026 | Newport challenger | Garrett Johns | Grass | 64 62 | W | |
| Jul 5, 2026 | Newport challenger | Aidan Mayo | Grass | 76 57 63 | W | |
| May 12, 2026 | Copa Faulconbridge | 2nd Round Qualifying | Alejo Sanchez Quilez | Clay | 57 46 | L |
Rivalries
Most-played opponents, head-to-head
Stefan Kozlov FAQ
Stefan Kozlov is ranked #295 on the ATP tour with 189 ranking points. The career-high ranking is #103, reached in 2022.
Stefan Kozlov is from United States and turned pro in 2013.
Stefan Kozlov is listed at 6'0" (183 cm). Listed weight is 79 kg (174 lb).
Stefan Kozlov is 28 years old.
Stefan Kozlov plays right-handed with a two-handed backhand.
Stefan Kozlov has a win-loss record since 2015 of 271-221 (55% win rate).
Stefan Kozlov: a career-high ranking of #103 in 2022. On tour since 2013.
Stefan Kozlov's strongest surface by win rate is hard, with a 203-164 record (55%). Surface splits: hard 203-164 (55%), clay 55-47 (54%), and grass 19-26 (42%).
Stefan Kozlov has won 4 of the last 10 completed matches (40%).
Stefan Kozlov's most-played opponents are Mitchell Krueger (9 meetings, 5-4), J.J. Wolf (9 meetings, 4-5), and Steve Johnson (8 meetings, 5-3).