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

551–600 of 606

Date	Tournament	Round	Winner	Loser	Score	Surface
2015-03-16	USA F10	R32	stefan kozlov	evan song	6-3 6-4	Hard
2015-02-16	Delray Beach	R32	tim smyczek	stefan kozlov	7-5 6-2	Hard
2015-02-09	Memphis	R32	jared donaldson	stefan kozlov	7-5 6-0	Hard
2015-01-27	Maui CH	QF	james mcgee	stefan kozlov	7-6(6) 6-2	Hard
2015-01-27	Maui CH	R16	stefan kozlov	michael russell	7-6(2) 6-3	Hard
2015-01-27	Maui CH	R32	stefan kozlov	sekou bangoura	6-4 6-2	Hard
2015-01-12	USA F4	QF	frederik nielsen	stefan kozlov	7-6(5) 4-6 6-0	Hard
2015-01-12	USA F4	R16	stefan kozlov	dennis novikov	6-0 6-1	Hard
2015-01-12	USA F4	R32	stefan kozlov	karim hossam	6-3 6-1	Hard
2015-01-05	USA F2	QF	taylor fritz	stefan kozlov	6-4 6-4	Hard
2015-01-05	USA F2	R16	stefan kozlov	clay thompson	6-2 2-6 6-3	Hard
2015-01-05	USA F2	R32	stefan kozlov	joshua milton	6-1 6-0	Hard
2014-10-27	Charlottesville CH	R32	peter torebko	stefan kozlov	6-3 7-6(2)	Hard
2014-10-20	Valencia	R32	martin klizan	stefan kozlov	6-3 6-3	Hard
2014-09-29	Sacramento CH	F	sam querrey	stefan kozlov	6-3 6-4	Hard
2014-09-29	Sacramento CH	SF	stefan kozlov	tim smyczek	3-6 6-3 7-6(1)	Hard
2014-09-29	Sacramento CH	QF	stefan kozlov	rhyne williams	4-6 7-6(3) 6-4	Hard
2014-09-29	Sacramento CH	R16	stefan kozlov	john patrick smith	6-4 3-6 6-4	Hard
2014-09-29	Sacramento CH	R32	stefan kozlov	ryan harrison	6-1 3-6 6-3	Hard
2014-09-22	USA F26	R16	kyle mcmorrow	stefan kozlov	6-1 6-4	Hard
2014-09-22	USA F26	R32	stefan kozlov	patrick davidson	6-3 6-2	Hard
2014-08-25	US Open	Q2	borna coric	stefan kozlov	2-6 6-2 6-2	Hard
2014-08-25	US Open	Q1	stefan kozlov	mitchell frank	3-6 6-0 6-2	Hard
2014-07-28	Washington	Q1	sam groth	stefan kozlov	3-6 7-6(5) 6-4	Hard
2014-05-19	Spain F10	R16	juan lizariturry	stefan kozlov	6-2 5-7 6-4	Clay
2014-05-19	Spain F10	R32	stefan kozlov	sergio martos gornes	6-2 6-3	Clay
2014-04-28	USA F12	R16	facundo mena	stefan kozlov	3-6 6-3 6-2	Clay
2014-04-28	USA F12	R32	stefan kozlov	devin mccarthy	6-1 2-0 RET	Clay
2014-04-07	USA F11	SF	filip krajinovic	stefan kozlov	3-6 6-4 6-3	Hard
2014-04-07	USA F11	QF	stefan kozlov	kyle mcmorrow	6-2 2-6 6-1	Hard
2014-04-07	USA F11	R16	stefan kozlov	nicolas meister	7-6(6) 6-2	Hard
2014-04-07	USA F11	R32	stefan kozlov	catalin gard	6-3 6-4	Hard
2014-03-17	USA F9	R16	kyle mcmorrow	stefan kozlov	6-4 6-4	Hard
2014-03-17	USA F9	R32	stefan kozlov	darian king	6-3 6-7(6) 1-0 RET	Hard
2014-03-10	USA F8	R32	darian king	stefan kozlov	6-4 7-6(0)	Hard
2014-03-06	Indian Wells Masters	Q1	sam groth	stefan kozlov	6-3 6-4	Hard
2014-02-17	Delray Beach	Q1	sekou bangoura	stefan kozlov	6-2 4-6 6-3	Hard
2013-11-11	USA F31	QF	greg ouellette	stefan kozlov	6-4 7-6(4)	Clay
2013-11-11	USA F31	R16	stefan kozlov	janis podzus	6-4 6-4	Clay
2013-11-11	USA F31	R32	stefan kozlov	oleg dmitriev	6-4 7-5	Clay
2013-11-04	USA F30	QF	gonzalo escobar	stefan kozlov	7-6(8) 6-4	Clay
2013-11-04	USA F30	R16	stefan kozlov	vadym kalyuzhnyy	7-5 6-3	Clay
2013-11-04	USA F30	R32	stefan kozlov	ruan roelofse	6-3 6-4	Clay
2013-10-28	USA F29	R32	martins podzus	stefan kozlov	6-4 6-2	Clay
2013-10-14	USA F27	QF	austin krajicek	stefan kozlov	6-3 6-2	Hard
2013-10-14	USA F27	R16	stefan kozlov	alexander zverev	6-2 6-0	Hard
2013-10-14	USA F27	R32	stefan kozlov	kevin king	6-4 3-6 6-3	Hard
2013-10-07	USA F26	R16	sanam singh	stefan kozlov	6-4 6-3	Hard
2013-10-07	USA F26	R32	stefan kozlov	luis fernando ramirez	6-1 6-4	Hard
2013-07-08	Newport	R32	michal przysiezny	stefan kozlov	6-3 6-7(9) 6-4	Grass

Aliases

betfair

stefan kozlov