Player

🇺🇸 stefan kozlov

Career matches 606

Wins 336

Losses 270

Win rate 55.4%

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

Surface breakdown

Hard 56.5% 248W – 191L (439 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

251–300 of 606

Date	Tournament	Round	Winner	Loser	Score	Surface
2020-11-16	Orlando CH	R32	thiago monteiro	stefan kozlov	6-1 6-3	Hard
2020-11-16	Orlando CH	Q2	stefan kozlov	kevin king	7-6(1) 6-7(7) 6-4	Hard
2020-11-16	Orlando CH	Q1	stefan kozlov	martin damm	6-4 6-7(2) 6-4	Hard
2020-11-09	Cary CH	Q1	nicolas mejia	stefan kozlov	2-6 7-5 7-6(2)	Hard
2020-10-19	M25 Hamburg	QF	raul brancaccio	stefan kozlov	6-4 7-5	Hard
2020-10-19	M25 Hamburg	R16	stefan kozlov	henri squire	6-4 6-1	Hard
2020-10-19	M25 Hamburg	R32	stefan kozlov	stefano napolitano	6-4 6-2	Hard
2020-10-12	M25+H Rodez	R32	jurgen briand	stefan kozlov	6-4 6-2	Hard
2020-09-28	M25 Porto	SF	nuno borges	stefan kozlov	6-3 7-5	Hard
2020-09-28	M25 Porto	QF	stefan kozlov	dayne kelly	6-2 6-2	Hard
2020-09-28	M25 Porto	R16	stefan kozlov	adrian menendez maceiras	7-5 6-3	Hard
2020-09-28	M25 Porto	R32	stefan kozlov	michail pervolarakis	6-1 6-4	Hard
2020-09-21	M15 Castelo Branco	R16	nicolas moreno de alboran	stefan kozlov	6-3 6-4	Hard
2020-09-21	M15 Castelo Branco	R32	stefan kozlov	alexis musialek	7-5 6-0	Hard
2020-09-14	M25+H Plaisir	R32	daniel cukierman	stefan kozlov	1-6 6-3 6-1	Hard
2020-09-07	M15 Sintra	R32	robert strombachs	stefan kozlov	6-4 6-2	Hard
2020-02-17	Delray Beach	R32	ugo humbert	stefan kozlov	6-7(5) 6-3 6-1	Hard
2020-02-17	Delray Beach	Q2	emilio gomez	stefan kozlov	6-3 6-2	Hard
2020-02-17	Delray Beach	Q1	stefan kozlov	alex bolt	4-6 6-4 6-2	Hard
2020-02-03	Dallas CH	R64	donald young	stefan kozlov	6-2 6-2	Hard
2020-01-20	M15 Cancun	R32	maximiliano estevez	stefan kozlov	5-7 1-1 RET	Hard
2020-01-06	Ann Arbor CH	SF	roberto cid	stefan kozlov	7-6(1) 5-7 6-3	Hard
2020-01-06	Ann Arbor CH	QF	stefan kozlov	bjorn fratangelo	7-6(4) 6-2	Hard
2020-01-06	Ann Arbor CH	R16	stefan kozlov	brandon nakashima	4-6 6-3 6-2	Hard
2020-01-06	Ann Arbor CH	R32	stefan kozlov	renzo olivo	7-6(2) 6-2	Hard
2020-01-06	Ann Arbor CH	R64	stefan kozlov	arthur rinderknech	6-3 6-4	Hard
2019-11-11	Champaign-Urbana CH	QF	j j wolf	stefan kozlov	6-2 6-2	Hard
2019-11-11	Champaign-Urbana CH	R16	stefan kozlov	evan song	6-4 4-6 6-1	Hard
2019-11-11	Champaign-Urbana CH	R32	stefan kozlov	denis kudla	6-3 6-3	Hard
2019-11-11	Champaign-Urbana CH	R64	stefan kozlov	simon carr	6-2 4-6 7-6(4)	Hard
2019-10-28	M25 Naples FL	QF	cristian rodriguez	stefan kozlov	6-2 6-2	Clay
2019-10-28	M25 Naples FL	R16	stefan kozlov	sam riffice	6-2 6-4	Clay
2019-10-28	M25 Naples FL	R32	stefan kozlov	mwendwa mbithi	6-4 6-3	Clay
2019-10-14	Las Vegas CH	QF	james duckworth	stefan kozlov	6-2 6-3	Hard
2019-10-14	Las Vegas CH	R16	stefan kozlov	alexander ritschard	5-7 6-4 6-1	Hard
2019-10-14	Las Vegas CH	R32	stefan kozlov	blaz rola	6-4 6-3	Hard
2019-10-14	Las Vegas CH	R64	stefan kozlov	evan song	6-4 6-3	Hard
2019-08-26	US Open	Q1	egor gerasimov	stefan kozlov	6-4 6-4	Hard
2019-07-22	Binghamton CH	R64	roberto ortega olmedo	stefan kozlov	6-7(5) 3-0 RET	Hard
2019-07-08	Winnetka CH	R16	jason kubler	stefan kozlov	6-2 6-3	Hard
2019-07-08	Winnetka CH	R32	stefan kozlov	adrian menendez maceiras	7-5 4-0 RET	Hard
2019-07-08	Winnetka CH	R64	stefan kozlov	evgeny karlovskiy	6-2 6-4	Hard
2019-06-03	Little Rock CH	R32	zhe li	stefan kozlov	6-3 5-7 6-0	Hard
2019-06-03	Little Rock CH	R64	stefan kozlov	garrett johns	7-5 6-3	Hard
2019-04-29	Savannah CH	R64	aleksandar vukic	stefan kozlov	6-2 7-6(11)	Clay
2019-04-22	Tallahassee CH	R32	tennys sandgren	stefan kozlov	6-3 6-2	Clay
2019-04-22	Tallahassee CH	R64	stefan kozlov	alexander zhurbin	4-6 6-4 6-0	Clay
2019-04-08	M15 Sunrise FL	R16	dmitry popko	stefan kozlov	7-5 6-3	Clay
2019-04-08	M15 Sunrise FL	R32	stefan kozlov	mateus alves	6-3 6-1	Clay
2019-03-18	M25 Calabasas CA	F	alexander ritschard	stefan kozlov	6-2 0-6 7-6(5)	Hard

Aliases

betfair

stefan kozlov