| ATP Acapulco | 02/22 02:55 | 14 |
[105] Patrick Kypson
v
Stefan Kozlov [272]
|
7-6,6-0 | |
| Challenger Metepec | 02/20 21:30 | 27 |
[272] Stefan Kozlov v
Rodrigo Pacheco Mendez
[228]
|
4-6,2-6 | |
| Challenger Metepec | 02/18 16:10 | 26 |
[272] Stefan Kozlov v
Karl Poling
[284]
|
6-4,7-6 | |
| Challenger Metepec | 02/16 20:10 | 25 |
Stefan Kozlov v
Tristan McCormick
|
6-3,6-7,6-4 | |
| Challenger Baton Rouge | 02/10 18:40 | 25 |
Stefan Dostanic
v
Stefan Kozlov
|
CANC | |
| Challenger Cleveland | 02/06 16:00 | 27 |
[283] Stefan Kozlov v
Keegan Smith
[338] |
3-6,2-6 | |
| Challenger Cleveland | 02/04 18:50 | 26 |
[283] Stefan Kozlov v
Raphael Perot
[404] |
7-6,3-6,6-3 | |
| Challenger Cleveland | 02/02 22:00 | 25 |
[283] Stefan Kozlov v
Cedrik-Marcel Stebe
[320] |
3-6,6-2,6-3 | |
| Challenger San Diego | 01/28 19:40 | 25 |
[144] Sho Shimabukuro
v
Stefan Kozlov [285]
|
6-2,4-6,7-6 | |
| Challenger Oeiras | 01/22 13:00 | 26 |
[285] Stefan Kozlov v
Francesco Passaro
[140]
|
3-6,6-1,1-6 | |
| Challenger Oeiras | 01/20 18:55 | 25 |
[214] Alexis Galarneau
v
Stefan Kozlov [285]
|
6-7,6-2,1-6 | |
| Challenger Oeiras | 01/19 12:30 | 19 |
[285] Stefan Kozlov v
Mikhail Kukushkin
[262]
|
6-4,6-2 |
Stefan Kozlov (Russian: Стефан Козлов, STEF-ahn KOZ-lov; born February 1, 1998) is an American professional tennis player of Russian descent. He has a career-high ATP ranking of world No. 103 achieved on 18 July 2022 and doubles ranking of world No. 180 on 19 June 2017.
Kozlov made his ATP World Tour debut as a wildcard in 2013 Hall of Fame Tennis Championships at the age of 15. He reached two junior Grand Slam finals in 2014 and finished the year at World No. 3 in the ITF Junior Combined rankings.