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Kobe Challenger

Montevideo Challenger

Champaign Challenger

Drummondville Challenger

Lyon Challenger

Stefan Kozlov

26 year old

United States

1 Feb 1998

2024 - 2023 - 2022 - 2021 - 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - See All

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Stefan Kozlov

37 - 19win/loss

Hard

16-9

64%

I Hard

4-2

67%

Clay

17-8

68%

Next Tournaments

25-Nov

Maia Challenger

Champaign Challenger

I.hard

--- Draw Prediction ---

Patrick Kypson

P.Kypson
USA Loss
1-6 7-6³ 6-4

1^st
12 Nov 24

L

Sioux Falls Challenger

I.hard

Murphy Cassone

M.Cassone
USA Loss
w/o

2^nd
24 Oct 24

L

Dmitry Popko

D.Popko
KAZ
7-6³ 4-6 6-4

1^st
21 Oct 24

W

Lincoln Challenger

Hard

Nishesh Basavareddy

N.Basavareddy
USA Loss
2-6 6-4 6-2

1^st
06 Aug 24

L

Ernesto Escobedo

E.Escobedo
USA
6-3 6-1

Q.
05 Aug 24

W

Collin Altamirano

C.Altamirano
USA
6-4 7-6⁴

q1
04 Aug 24

W

Lexington Challenger

Hard

Bernard Tomic

B.Tomic
AUS Loss
6-4 3-6 6-3

1^st
30 Jul 24

L

Stefan Dostanic

S.Dostanic
USA
7-6³ 0-6 7-5

Q.
29 Jul 24

W

Ryuki Matsuda

R.Matsuda
JPN
6-2 6-3

q1
28 Jul 24

W

Granby Challenger

Hard

Nicolas Mejia

N.Mejia
COL Loss
6-1 6-2

1^st
17 Jul 24

L

Cooper Williams

C.Williams
USA
6-1 7-6³

Q.
15 Jul 24

W

Victor Lilov

V.Lilov
USA
6-2 6-1

q1
14 Jul 24

W

Bloomfield Hills Challenger

Hard

Nishesh Basavareddy

N.Basavareddy
USA Loss
6-2 2-0 ret.

1/2
06 Jul 24

L

Jeff Wolf

J.Wolf
USA
6-4 6-4

1/4
05 Jul 24

W

Tung-Lin Wu

T.Wu
TPE
5-7 6-3 4-0 ret.

2^nd
03 Jul 24

W

Michael Zheng

M.Zheng
USA
4-6 7-5 6-1

1^st
02 Jul 24

W

William Grant

W.Grant
USA
6-1 6-4

Q.
01 Jul 24

W

Nicholas Herdoiza

N.Herdoiza
USA
6-3 6-1

q1
30 Jun 24

W

Tyler Challenger

Hard

Chak Lam Coleman Wong

C.Wong
HKG Loss
4-6 6-4 4-1 ret.

2^nd
05 Jun 24

L

Blaise Bicknell

B.Bicknell
JAM
6-3 6-3

1^st
03 Jun 24

W

Little Rock Challenger

Hard

Rudy Quan

R.Quan
USA Loss
6-1 7-5

1^st
28 May 24

L

Savannah Challenger

Clay

Alexander Ritschard

A.Ritschard
SUI Loss
6-3 7-5

1^st
23 Apr 24

L

Tallahassee Challenger

Clay

Mitchell Krueger

M.Krueger
USA Loss
6-3 3-6 6-1

1/2
20 Apr 24

L

Oliver Crawford

O.Crawford
USA
6-2 6-2

1/4
19 Apr 24

W

Tennys Sandgren

T.Sandgren
USA
6-2 6-7⁵ 6-1

2^nd
17 Apr 24

W

Gerard Campana Lee

G.Lee
KOR
4-6 6-3 6-0

1^st
15 Apr 24

W

Sarasota Challenger

Clay

Tennys Sandgren

T.Sandgren
USA Loss
6-1 6-4

1/4
12 Apr 24

L

Ethan Quinn

E.Quinn
USA
6-2 5-7 6-4

2^nd
10 Apr 24

W

Denis Kudla

D.Kudla
USA
6-2 4-6 6-2

1^st
09 Apr 24

W

Gabi Adrian Boitan

G.Boitan
ROU
6-3 7-6¹⁰

Q.
08 Apr 24

W

Arthur Gea

A.Gea
FRA
6-4 7-6⁵

q1
07 Apr 24

W

Houston

Clay

Denis Yevseyev

D.Yevseyev
KAZ Loss
6-2 6-0

q1
30 Mar 24

L

San Luis Potosi Challenger

Clay

Roberto Cid Subervi

R.Subervi
DOM Loss
6-2 6-3

Q.
25 Mar 24

L

Evan Zhu

E.Zhu
USA
6-0 6-1

q1
24 Mar 24

W

Merida Challenger

Clay

Juan Pablo Ficovich

J.Ficovich
ARG Loss
7-6⁶ 6-2

1/4
21 Mar 24

L

Elmar Ejupovic

E.Ejupovic
GER
6-3 6-2

2^nd
20 Mar 24

W

Federico Gaio

F.Gaio
ITA
6-4 4-6 6-2

1^st
18 Mar 24

W

Kigali 2 Challenger

Clay

Kamil Majchrzak

K.Majchrzak
POL Loss
6-3 6-0

1/4
08 Mar 24

L

Benjamin Lock

B.Lock
ZIM
7-6² 5-7 6-4

2^nd
07 Mar 24

W

Noah Schachter

N.Schachter
USA
6-3 6-4

1^st
05 Mar 24

W

Ivan Denisov

I.Denisov
RUS
2-6 6-3 6-1

Q.
04 Mar 24

W

Christopher Bulus

C.Bulus
NGR
6-2 7-5

q1
03 Mar 24

W

Kigali 1 Challenger

Clay

Marco Trungelliti

M.Trungelliti
ARG Loss
3-6 6-4 6-3

1/2
01 Mar 24

L

Yshai Oliel

Y.Oliel
ISR
4-6 6-3 6-1

1/4
29 Feb 24

W

Daniel Cukierman

D.Cukierman
ISR
7-5 6-7⁴ 7-6⁵

2^nd
28 Feb 24

W

Clement Tabur

C.Tabur
FRA
6-4 7-6⁴

1^st
27 Feb 24

W

Delray Beach

Hard

Shintaro Mochizuki

S.Mochizuki
JPN Loss
6-3 7-6²

q1
11 Feb 24

L

Cleveland Challenger

I.hard

Ethan Quinn

E.Quinn
USA Loss
6-2 4-6 6-3

2^nd
01 Feb 24

L

Strong Kirchheimer

S.Kirchheimer
USA
3-6 6-1 7-6³

1^st
30 Jan 24

W

Ezekiel Clark

E.Clark
USA
6-1 6-4

Q.
29 Jan 24

W

Ajay Mahenthiran

A.Mahenthiran
USA
7-5 6-1

q1
28 Jan 24

W

Indian Wells 2 Challenger

Hard

Bruno Kuzuhara

B.Kuzuhara
USA Loss
7-6⁶ 6-4

Q.
23 Jan 24

L

Alafia Ayeni

A.Ayeni
USA
6-4 6-3

q1
21 Jan 24

W

Indian Wells 1 Challenger

Hard

Paul Jubb

P.Jubb
GBR Loss
4-6 6-3 6-3

2^nd
18 Jan 24

L

Gabriel Debru

G.Debru
FRA
6-1 3-6 6-2

1^st
16 Jan 24

W

Edan Leshem

E.Leshem
ISR
7-5 6-3

Q.
15 Jan 24

W

Ezekiel Clark

E.Clark
USA
2-6 7-6⁷ 6-4

q1
15 Jan 24

W

Slams

Australian Open Wimbledon French Open U.S. Open

ATP 1000

Miami Cincinnati Indian Wells

Career Titles - 0

Year	Sum.	Hard	Clay	I.hard	Grass	Carpet
2024	37-19	16-9	17-8	4-2	0-0	0-0
2023	6-12	1-6	0-0	5-6	0-0	0-0
2022	21-34	14-18	0-5	4-5	3-6	0-0
2021	41-15	20-12	5-2	16-1	0-0	0-0
2020	13-13	7-8	0-0	6-5	0-0	0-0
2019	22-18	14-9	4-4	4-5	0-0	0-0
2018	13-26	4-12	7-6	1-4	1-4	0-0
2017	31-29	15-14	8-8	3-2	5-5	0-0
2016	58-31	28-15	10-6	16-5	4-5	0-0
2015	44-27	15-12	10-5	17-8	2-2	0-0
2014	17-15	15-10	2-3	0-2	0-0	0-0
2013	13-8	3-2	10-5	0-0	0-1	0-0
2012	2-1	2-1	0-0	0-0	0-0	0-0
Total	318-248	154-128	73-52	76-45	15-23	0-0

Ranking History