Stefan Kozlov

ATP USA DOB: Feb 1, 1998 (age 28) Hand: Right-handed Height: 183 cm (6'0")

#265

203 pts · May 4, 2026

#103

first reached Jul 18, 2022

9-26

25.7% win rate · 35 matches

Surface	Wins	Losses	Matches	Win %
Hard	4	17	21	19%
Clay	0	1	1	0%
Grass	5	8	13	38.5%

Date	Tournament	Round	Surface	Result	Opponent	Score
2022-09-19	San Diego	Round of 32	Hard	L	J J Wolf	6-2 7-6(6)
2022-08-29	US Open	Round of 128	Hard	L	Daniil Medvedev	6-2 6-4 6-0
2022-08-01	Washington	Round of 64	Hard	L	Jack Draper	7-5 6-2
2022-07-11	Newport	Round of 32	Grass	L	Steve Johnson	7-5 6-3
2022-06-27	Wimbledon	Round of 128	Grass	L	Diego Schwartzman	6-3 6-2 6-2
2022-02-21	Acapulco	Round of 32	Hard	W	Grigor Dimitrov	7-6(8) 5-7 6-3
2022-02-21	Acapulco	Round of 16	Hard	L	Rafael Nadal	6-0 6-3
2022-02-14	Delray Beach	Round of 32	Hard	W	Emilio Gomez	4-6 7-5 6-3
2022-02-14	Delray Beach	Round of 16	Hard	W	Steve Johnson	6-1 6-3
2022-02-14	Delray Beach	Quarterfinal	Hard	L	Tommy Paul	6-3 6-1
2022-01-17	Australian Open	Round of 64	Hard	L	Matteo Berrettini	6-1 4-6 6-4 6-1
2022-01-17	Australian Open	Round of 128	Hard	W	Jiri Vesely	7-5 6-3 6-4
2021-03-15	Acapulco	Round of 32	Hard	L	Cameron Norrie	6-3 6-3
2020-02-17	Delray Beach	Round of 32	Hard	L	Ugo Humbert	6-7(5) 6-3 6-1
2018-04-09	Houston	Round of 32	Clay	L	Guido Pella	6-3 6-2
2017-08-14	Cincinnati Masters	Round of 64	Hard	L	Sam Querrey	6-3 6-0
2017-07-31	Washington	Round of 64	Hard	L	Yuki Bhambri	7-5 2-0 RET
2017-07-24	Atlanta	Round of 32	Hard	L	Quentin Halys	7-5 7-6(7)
2017-07-17	Newport	Round of 32	Grass	L	Adrian Menendez Maceiras	6-2 7-6(5)
2017-06-19	Queen's Club	Round of 16	Grass	L	Marin Cilic	6-0 6-4

Opponent	Wins	Losses	Total	H2H
Steve Johnson	3	2	5	view H2H
Donald Young	0	2	2	view H2H
Sam Querrey	0	2	2	view H2H
Yoshihito Nishioka	1	0	1	view H2H
Benjamin Becker	1	0	1	view H2H
Dustin Brown	1	0	1	view H2H
Jiri Vesely	1	0	1	view H2H
Emilio Gomez	1	0	1	view H2H
J J Wolf	0	1	1	view H2H
Michal Przysiezny	0	1	1	view H2H