Name: Stefan Kozlov
Country: USA
Birthdate: 01.02.98, 26 years
ATP ranking: 451
TOP ranking's position: 103 (18.07.22, 533 points)
Points: 97
Prize money: 996773 $
Matches total: 578
Win: 328
%: 56.75 %
Country: USA
Birthdate: 01.02.98, 26 years
ATP ranking: 451
TOP ranking's position: 103 (18.07.22, 533 points)
Points: 97
Prize money: 996773 $
Matches total: 578
Win: 328
%: 56.75 %
| year | summary | Hard | Clay | I. hard | Carpet | Grass | Acrylic |
| 2024 | 24/12 | 4/3 | 17/8 | 3/1 | 0/0 | 0/0 | 0/0 |
| 2023 | 6/12 | 1/6 | 0/0 | 5/6 | 0/0 | 0/0 | 0/0 |
| 2022 | 21/34 | 14/18 | 0/5 | 4/5 | 0/0 | 3/6 | 0/0 |
| 2021 | 41/15 | 20/12 | 5/2 | 16/1 | 0/0 | 0/0 | 0/0 |
| 2020 | 13/13 | 7/8 | 0/0 | 6/5 | 0/0 | 0/0 | 0/0 |
| 2019 | 22/18 | 14/9 | 4/4 | 4/5 | 0/0 | 0/0 | 0/0 |
| 2018 | 13/26 | 4/12 | 7/6 | 1/4 | 0/0 | 1/4 | 0/0 |
| 2017 | 31/29 | 15/14 | 8/8 | 3/2 | 0/0 | 5/5 | 0/0 |
| 2016 | 58/31 | 28/15 | 10/6 | 16/5 | 0/0 | 4/5 | 0/0 |
| 2015 | 44/27 | 15/12 | 10/5 | 17/8 | 0/0 | 2/2 | 0/0 |
| 2014 | 33/19 | 23/12 | 5/4 | 0/2 | 0/0 | 5/1 | 0/0 |
| 2013 | 17/11 | 3/3 | 11/6 | 0/0 | 0/0 | 3/2 | 0/0 |
| 2012 | 5/3 | 4/2 | 0/0 | 0/0 | 0/0 | 1/1 | 0/0 |
| TOTAL | 328/250 | 152/126 | 77/54 | 75/44 | 0/0 | 24/26 | 0/0 |
| perc. % | 56.75 % | 54.68 % | 58.78 % | 63.03 % | 0 % | 48 % | 0 % |
Stefan Kozlov / scheduled / last
| no matches found |
Stefan Kozlov form / year 2018 / surface: Clay
Stefan Kozlov / year 2018 / surface: Clay
| 22.05.18 | q 1 | Yasutaka Uchiyama | Stefan Kozlov | 6-4, 7-5 |  | match details |  Paris | Clay |
| 27.05.18 | q 2 | Martin Cuevas | Stefan Kozlov | 6-4, 6-1 | | match details |  Vicenza Challenger | Clay |
| 26.05.18 | q 1 | Stefan Kozlov | Edoardo Sardella | 6-1, 6-2 |  | match details | ||
| 18.05.18 | 1/4 | Reilly Opelka | Stefan Kozlov | 7-64, 6-1 | | match details | Bordeaux Challenger | Clay |
| 16.05.18 | 2nd round | Stefan Kozlov | Antoine Hoang | 6-3, 7-64 | | match details | ||
| 15.05.18 | 1st round | Stefan Kozlov | Pierre-Hugues Herbert | 6-2, 7-65 | | match details | ||
| 08.05.18 | 1st round | Constant Lestienne | Stefan Kozlov | 7-62, 6-4 | | match details | Aix En | Clay |
| 20.04.18 | 1/4 | Hugo Dellien | Stefan Kozlov | 5-7, 6-1, 7-66 | | match details |  Sarasota Challenger | Clay |
| 18.04.18 | 2nd round | Stefan Kozlov | Donald Young | 6-4, 6-4 | | match details | ||
| 16.04.18 | 1st round | Stefan Kozlov | Mitchell Krueger | 6-4, 6-3 | | match details | ||
| 10.04.18 | 1st round | Guido Pella | Stefan Kozlov | 6-3, 6-2 | | match details | Houston | Clay |
| 08.04.18 | qual. | Stefan Kozlov | Akira Santillan | 6-2, 6-0 | | match details | ||
| 07.04.18 | q 1 | Stefan Kozlov | Thomaz Bellucci | 6-73, 6-3, 7-65 | | match details |
