Click here - to use the wp menu builder

Montreal

Toronto

San Marino Challenger

Meerbusch Challenger

Chicago Challenger

Lima Challenger

Concord

Stefan Kozlov

24 year old United States

United States

1 Feb 1998

2022 - 2021 - 2020 - 2019 - 2018 - 2017 - 2016 - 2015 - 2014 - 2013 - See All

x

Select Year

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Stefan Kozlov

12 - 24win/loss

Hard

8-11

42%

I Hard

1-2

33%

Clay

0-5

0%

Grass

3-6

33%

--- Draw Prediction ---

Chicago Challenger 35

Hard

Ernesto Escobedo

E.Escobedo
USA Loss
6-4 7-6²

1^st
10 Aug 22

L

Washington

Hard

Jack Draper

J.Draper
GBR Loss
7-5 6-2

1^st
01 Aug 22

L

Atlanta

Hard

Ramkumar Ramanathan

R.Ramanathan
IND Loss
6-0 6-1

q1
23 Jul 22

L

Indianapolis Challenger 35

I.hard

Aleksandar Kovacevic

A.Kovacevic
USA Loss
6-3 6-7⁴ 6-4

1^st
18 Jul 22

L

Newport

Grass

Steve Johnson

S.Johnson
USA Loss
7-5 6-3

1^st
11 Jul 22

L

London

Grass

Diego Sebastian Schwartzman

D.Schwartzman
ARG Loss
6-3 6-2 6-2

1^st
28 Jun 22

L

Dennis Novak

D.Novak
AUT Loss
7-5 6-4 5-7 3-6 6-3

Q.
23 Jun 22

L

Dominic Stephan Stricker

D.Stricker
SUI
7-6⁹ 4-6 6-3

q2
22 Jun 22

W

Evan Furness

E.Furness
FRA
7-5 6-3

q1
20 Jun 22

W

London

Grass

Steve Johnson

S.Johnson
USA Loss
6-0 6-0

q1
11 Jun 22

L

's-Hertogenbosch

Grass

Matthew Ebden

M.Ebden
AUS Loss
6-4 6-4

q1
04 Jun 22

L

Surbiton Challenger 35

Grass

Brandon Nakashima

B.Nakashima
USA Loss
6-4 6-3

2^nd
02 Jun 22

L

Mats Moraing

M.Moraing
GER
6-3 7-6⁴

1^st
01 Jun 22

W

Paris

Clay

Nino Serdarusic

N.Serdarusic
CRO Loss
7-5 6-0

q1
17 May 22

L

Bordeaux Challenger 35

Clay

Jaume Antoni Munar Clar

J.Clar
ESP Loss
6-2 6-3

1^st
10 May 22

L

Savannah Challenger 35

Clay

Jose Pereira

J.Pereira
BRA Loss
6-1 6-0

1^st
26 Apr 22

L

Mexico City Challenger 35

Clay

Gerald Melzer

G.Melzer
AUT Loss
6-4 0-0 ret.

1^st
04 Apr 22

L

Pereira Challenger 35

Clay

Nicolas Mejia

N.Mejia
COL Loss
6-1 6-1

1^st
29 Mar 22

L

Miami

Hard

Mitchell Krueger

M.Krueger
USA Loss
6-2 6-2

q1
21 Mar 22

L

Indian Wells

Hard

Holger Vitus Nodskov Rune

H.Rune
DEN Loss
6-4 6-2

Q.
09 Mar 22

L

Sebastian Sec

S.Sec
USA
6-3 6-7⁴ 6-2

q1
08 Mar 22

W

Acapulco

Hard

Rafael Nadal

R.Nadal
ESP Loss
6-0 6-3

2^nd
23 Feb 22

L

Grigor Dimitrov

G.Dimitrov
BUL
7-6⁸ 5-7 6-3

1^st
21 Feb 22

W

Oscar Otte

O.Otte
GER Loss
6-1 0-6 7-6²

Q.
20 Feb 22

L

Steve Johnson

S.Johnson
USA
6-4 6-3

q1
19 Feb 22

W

Delray Beach

Hard

Tommy Paul

T.Paul
USA Loss
6-3 6-1

1/4
18 Feb 22

L

Steve Johnson

S.Johnson
USA
6-1 6-3

2^nd
16 Feb 22

W

Emilio Gomez

E.Gomez
ECU
4-6 7-5 6-3

1^st
15 Feb 22

W

Bjorn Fratangelo

B.Fratangelo
USA
6-3 1-0 ret.

Q.
13 Feb 22

W

Go Soeda

G.Soeda
JPN
7-5 6-2

q1
12 Feb 22

W

Columbus Challenger 35

I.hard

Dominic Stephan Stricker

D.Stricker
SUI Loss
4-6 6-4 6-3

2^nd
26 Jan 22

L

Alexander Bernard

A.Bernard
USA
6-2 6-1

1^st
24 Jan 22

W

Melbourne

Hard

Matteo Berrettini

M.Berrettini
ITA Loss
6-1 4-6 6-4 6-1

2^nd
19 Jan 22

L

Jiri Vesely

J.Vesely
CZE
7-5 6-3 6-4

1^st
17 Jan 22

W

Sydney

Hard

Denis Kudla

D.Kudla
USA Loss
4-6 7-6⁷ 6-3

q1
09 Jan 22

L

Bendigo Challenger 35

Hard

Flavio Cobolli

F.Cobolli
ITA Loss
6-4 3-6 6-1

2^nd
04 Jan 22

L

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
2022	12-24	8-11	0-5	1-2	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	266-207	131-106	56-44	64-34	15-23	0-0

Ranking History