
ATP #278 · USA · 28 years
| Season | Type | Rank | Titles | W-L | Hard | Clay | Grass |
|---|---|---|---|---|---|---|---|
| 2026 | Singles | 294 | 0 | 22-23 | 14-17 | 5-5 | 3-1 |
| 2026 | Doubles | 678 | 0 | 3-7 | 3-5 | 0-2 | - |
| 2025 | Singles | 289 | 2 | 28-12 | 22-9 | 6-2 | 0-1 |
| 2025 | Doubles | - | 0 | 0-6 | 0-4 | 0-2 | - |
| 2024 | Singles | 354 | 0 | 37-19 | 20-11 | 17-8 | - |
| 2024 | Doubles | 840 | 0 | 4-2 | - | 4-2 | - |
| 2023 | Singles | 787 | 0 | 6-12 | 6-12 | - | - |
| 2023 | Doubles | - | 0 | 0-0 | 0-0 | - | - |
| 2022 | Singles | 198 | 0 | 21-34 | 18-23 | 0-5 | 3-6 |
| 2022 | Doubles | 1266 | 0 | 3-1 | 3-0 | 0-0 | 0-1 |
| 2021 | Singles | 159 | 3 | 41-15 | 36-13 | 5-2 | - |
| 2021 | Doubles | 317 | 2 | 11-3 | 11-2 | 0-1 | - |
| 2020 | Singles | 371 | 0 | 11-12 | 11-12 | - | - |
| 2020 | Doubles | 1092 | 0 | 0-4 | 0-4 | - | - |
| 2019 | Singles | 422 | 0 | 22-17 | 18-13 | 4-4 | - |
| 2019 | Doubles | 1035 | 0 | 1-2 | 1-2 | - | - |
| 2018 | Singles | 316 | 0 | 11-21 | 4-14 | 6-5 | 1-2 |
| 2018 | Doubles | 486 | 0 | 2-5 | 1-3 | 1-2 | - |
| 2017 | Singles | 167 | 1 | 29-28 | 18-16 | 6-7 | 5-5 |
| 2017 | Doubles | 443 | 0 | 7-8 | 3-5 | 4-3 | - |
| 2016 | Singles | 116 | 3 | 46-27 | 36-18 | 6-4 | 4-5 |
| 2016 | Doubles | 214 | 1 | 17-9 | 17-9 | - | - |
| 2015 | Singles | 351 | 0 | 16-18 | 12-15 | 4-3 | - |
| 2015 | Mixed_doubles | - | 0 | 0-1 | 0-1 | - | - |
| 2015 | Doubles | 570 | 1 | 3-6 | 3-3 | 0-3 | - |
| 2014 | Singles | 467 | 0 | 12-13 | 10-11 | 2-2 | - |
| 2014 | Mixed_doubles | - | 0 | 1-1 | 1-1 | - | - |
| 2014 | Doubles | 1234 | 0 | 0-4 | 0-3 | 0-1 | - |
| 2013 | Singles | 1083 | 0 | 7-8 | 3-2 | 4-5 | 0-1 |
| 2012 | Singles | 1401 | 0 | 2-1 | 2-1 | - | - |
Stefan Kozlov (from USA, aged 28).