Player

🇺🇸 Stefan Kozlov

Career matches 610

Wins 340

Losses 270

Win rate 55.7%

Elo (current) 2,170 2026-04-22

Surface breakdown

Hard 56.9% 252W – 191L (443 matches)

Clay 56.8% 75W – 57L (132 matches)

Grass 37.1% 13W – 22L (35 matches)

Career form (last 10)

WLLWWWLLLW

Newest on left. Hover for details.

Head-to-head (top 5 opponents)

Opponent	Played	W	L	W%
J.J. Wolf	10	5	5	50%
Mitchell Krueger	10	5	5	50%
Tennys Sandgren	9	6	3	67%
Steve Johnson	8	5	3	63%
Darian King	7	1	6	14%

Recent matches

151–200 of 610

Date	Tournament	Round	Winner	Loser	Score	Surface
2022-10-24	Las Vegas CH	QF	Stefan Kozlov	Alexis Galarneau	6-7(5) 6-4 6-3	Hard
2022-10-24	Las Vegas CH	R16	Stefan Kozlov	Evan Zhu	7-6(5) 6-2	Hard
2022-10-24	Las Vegas CH	R32	Stefan Kozlov	Cannon Kingsley	7-5 4-6 6-1	Hard
2022-10-10	Fairfield CH	R32	Sam Riffice	Stefan Kozlov	3-6 6-2 6-3	Hard
2022-10-03	Tiburon CH	R16	Alexis Galarneau	Stefan Kozlov	6-1 7-5	Hard
2022-10-03	Tiburon CH	R32	Stefan Kozlov	Giovanni Oradini	6-1 6-4	Hard
2022-09-19	San Diego	R32	J.J. Wolf	Stefan Kozlov	6-2 7-6(6)	Hard
2022-09-12	Cary CH	R16	Yasutaka Uchiyama	Stefan Kozlov	6-4 2-0 RET	Hard
2022-09-12	Cary CH	R32	Stefan Kozlov	Cannon Kingsley	2-6 6-2 6-2	Hard
2022-08-29	Us Open	R128	Daniil Medvedev	Stefan Kozlov	6-2 6-4 6-0	Hard
2022-08-15	Cincinnati Masters	Q1	Dusan Lajovic	Stefan Kozlov	6-3 7-5	Hard
2022-08-08	Chicago CH	R32	Ernesto Escobedo	Stefan Kozlov	6-4 7-6(2)	Hard
2022-08-01	Washington	R64	Jack Draper	Stefan Kozlov	7-5 6-2	Hard
2022-07-25	Atlanta	Q1	Ramkumar Ramanathan	Stefan Kozlov	6-0 6-1	Hard
2022-07-18	Indianapolis CH	R32	Aleksandar Kovacevic	Stefan Kozlov	6-3 6-7(4) 6-4	Hard
2022-07-11	Newport	R32	Steve Johnson	Stefan Kozlov	7-5 6-3	Grass
2022-06-27	Wimbledon	R128	Diego Schwartzman	Stefan Kozlov	6-3 6-2 6-2	Grass
2022-06-27	Wimbledon	Q3	Dennis Novak	Stefan Kozlov	7-5 6-4 5-7 3-6 6-3	Grass
2022-06-27	Wimbledon	Q2	Stefan Kozlov	Dominic Stricker	7-6(9) 4-6 6-3	Grass
2022-06-27	Wimbledon	Q1	Stefan Kozlov	Evan Furness	7-5 6-3	Grass
2022-06-13	Queen's Club	Q1	Steve Johnson	Stefan Kozlov	6-0 6-0	Grass
2022-06-06	s Hertogenbosch	Q1	Matthew Ebden	Stefan Kozlov	6-4 6-4	Grass
2022-05-30	Surbiton CH	R16	Brandon Nakashima	Stefan Kozlov	6-4 6-3	Grass
2022-05-30	Surbiton CH	R32	Stefan Kozlov	Mats Moraing	6-3 7-6(4)	Grass
2022-05-23	Roland Garros	Q1	Nino Serdarusic	Stefan Kozlov	7-5 6-0	Clay
2022-05-09	Bordeaux CH	R32	Jaume Munar	Stefan Kozlov	6-2 6-3	Clay
2022-04-25	Savannah CH	R32	Jose Pereira	Stefan Kozlov	6-1 6-0	Clay
2022-04-04	Mexico City CH	R32	Gerald Melzer	Stefan Kozlov	6-4 0-0 RET	Clay
2022-03-28	Pereira CH	R32	Nicolas Mejia	Stefan Kozlov	6-1 6-1	Clay
2022-03-21	Miami Masters	Q1	Mitchell Krueger	Stefan Kozlov	6-2 6-2	Hard
2022-03-07	Indian Wells Masters	Q2	Holger Rune	Stefan Kozlov	6-4 6-2	Hard
2022-03-07	Indian Wells Masters	Q1	Stefan Kozlov	Sebastian Sec	6-3 6-7(4) 6-2	Hard
2022-02-21	Acapulco	R32	Stefan Kozlov	Grigor Dimitrov	7-6(8) 5-7 6-3	Hard
2022-02-21	Acapulco	R16	Rafael Nadal	Stefan Kozlov	6-0 6-3	Hard
2022-02-21	Acapulco	Q2	Oscar Otte	Stefan Kozlov	6-1 0-6 7-6(2)	Hard
2022-02-21	Acapulco	Q1	Stefan Kozlov	Steve Johnson	6-4 6-3	Hard
2022-02-14	Delray Beach	R32	Stefan Kozlov	Emilio Gomez	4-6 7-5 6-3	Hard
2022-02-14	Delray Beach	R16	Stefan Kozlov	Steve Johnson	6-1 6-3	Hard
2022-02-14	Delray Beach	QF	Tommy Paul	Stefan Kozlov	6-3 6-1	Hard
2022-02-14	Delray Beach	Q2	Stefan Kozlov	Bjorn Fratangelo	6-3 1-0 RET	Hard
2022-02-14	Delray Beach	Q1	Stefan Kozlov	Go Soeda	7-5 6-2	Hard
2022-01-24	Columbus CH	R16	Dominic Stricker	Stefan Kozlov	4-6 6-4 6-3	Hard
2022-01-24	Columbus CH	R32	Stefan Kozlov	Alexander Bernard	6-2 6-1	Hard
2022-01-17	Australian Open	R64	Matteo Berrettini	Stefan Kozlov	6-1 4-6 6-4 6-1	Hard
2022-01-17	Australian Open	R128	Stefan Kozlov	Jiri Vesely	7-5 6-3 6-4	Hard
2022-01-10	Sydney	Q1	Denis Kudla	Stefan Kozlov	4-6 7-6(7) 6-3	Hard
2022-01-03	Bendigo CH	R32	Flavio Cobolli	Stefan Kozlov	6-4 3-6 6-1	Hard
2021-11-15	Champaign CH	F	Stefan Kozlov	Aleksandar Vukic	5-7 6-3 6-4	Hard
2021-11-15	Champaign CH	SF	Stefan Kozlov	J.J. Wolf	6-2 6-3	Hard
2021-11-15	Champaign CH	QF	Stefan Kozlov	Mitchell Krueger	6-4 6-4	Hard

Aliases

atp

S. Kozlov
Stefan Kozlov (ke64)

atp_short

S. Kozlov (ke64)

itf

Stefan Kozlov (800335858)

sackmann

Stefan Kozlov (111578)

variant

S Kozlov