ATP
career high · #103

Stefan
Kozlov

USAUSA·age 28·Right-handed·183cm · 6′0″
#271▲ 13
Current rank · ATP
202
Points

Stefan Kozlov is ranked No. 271 in the ATP ranking of 2 November 2026 with 202 points. Career high: No. 103 (18 July 2022).

Ranking since 2014

weekly ranking, No. 1 at the top
#1#10#10020152017201920212023best #103

Serve and return by season

All figures, every season
Stefan KozlovTour average
60%65%70%75%80%201620172022
Latest matches
WashingtonJul 2026HARDLost in Q1
Savannah CHApr 2026CLAYLost in R16
R16
DOMNick HardtQ626
🇺🇸Stefan Kozlov260
R32
🇺🇸Stefan Kozlov66
🇪🇪Daniil Glinka323
Tallahassee CHApr 2026CLAYLost in R32
R32
🇺🇸Alex RybakovAlt76
🇺🇸Stefan KozlovQ632
Q2
🇺🇸Stefan Kozlov1647
🇨🇭Kilian Feldbausch91662
Q1
🇺🇸Stefan Kozlov166
Mexico City CHApr 2026CLAYLost in R16
R16
🇦🇺James Duckworth166
🇺🇸Stefan Kozlov32
R32
🇺🇸Stefan Kozlov66
🇫🇷Raphael Perot31
More matches
San Luis Potosi CHMar 2026CLAYLost in R32
R32
🇲🇽Alan MagadanWC67
🇺🇸Stefan Kozlov7367
Morelia CHMar 2026HARDLost in R32
R32
🇺🇸Andres Martin66
🇺🇸Stefan Kozlov22
Cuernavaca CHMar 2026HARDLost in R16
R16
🇺🇸Michael Mmoh76
🇺🇸Stefan Kozlov752
R32
🇺🇸Stefan Kozlov766
🇲🇽Alan MagadanWC44
Phoenix CHMar 2026HARDLost in R32
R32
🇺🇸Stefan KozlovQ263
Q2
🇺🇸Stefan Kozlov4636
🇦🇺Marc Polmans6164
Q1
🇺🇸Stefan Kozlov476
🇺🇸Nathan PonwithWC54
AcapulcoFeb 2026HARDLost in Q1
Metepec CHFeb 2026HARDLost in QF
QF
R16
🇺🇸Stefan Kozlov867
🇺🇸Karl Poling464
R32
🇺🇸Stefan Kozlov86646
Cleveland CHFeb 2026HARDLost in QF
QF
🇺🇸Keegan Smith66
🇺🇸Stefan Kozlov732
R16
🇺🇸Stefan Kozlov7736
🇫🇷Raphael Perot6563
R32
🇺🇸Stefan Kozlov7366
San Diego CHJan 2026HARDLost in R32
R32
🇯🇵Sho Shimabukuro5647
🇺🇸Stefan Kozlov2665
Oeiras 1 CHJan 2026HARDLost in R16
R16
🇮🇹Francesco Passaro4616
🇺🇸Stefan KozlovQ361
R32
🇺🇸Stefan KozlovQ726
🇨🇦Alexis Galarneau6261
Q2
🇺🇸Stefan Kozlov566
Q1
🇺🇸Stefan Kozlov565
Glasgow CHJan 2026HARDLost in R32
R32
🇬🇧Harry Wendelken636
🇺🇸Stefan Kozlov164
Nottingham CHJan 2026HARDLost in QF
QF
🇬🇧Toby Samuel376
🇺🇸Stefan Kozlov7614
R16
🇺🇸Stefan Kozlov766
🇫🇷Mathys Erhard24
R32
🇺🇸Stefan Kozlov766
🇺🇸Tyler Zink41
Bogota CHNov 2025CLAYLost in QF
QF
🇺🇸Stefan Kozlov8645
R16
R32
🇺🇸Stefan Kozlov8646
Champaign CHNov 2025HARDTitle
F
🇺🇸Stefan Kozlov77
🇺🇸Murphy Cassone4635
SF
QF
🇺🇸Stefan Kozlov6676
🇺🇸Darwin Blanch273
R16
🇺🇸Stefan Kozlov66
🇺🇸Tyler Zink833
R32
🇺🇸Stefan Kozlov66
🇸🇪Leo Borg10
Knoxville CHNov 2025HARDReached R32
R32
🇺🇸Stefan KozlovAlt726
🇺🇸Dominique RollandWC6161
Season by season
tour-level singles
2022Service games won63.9%Tour average 79.1%Return games won19.7%Tour average 20.9%
0%20%40%60%80%201620172018202020212022
Statistic201320142015201620172018202020212022
Results
Year-end rank–#467#351#116#167#316#371#159#198
W–L0–10–10–23–22–90–10–10–14–8
–––60.0%18.2%–––33.3%
Titles000000000
Serve
–––4.23.6–––1.6
–––4.84.1–––4.8
–––55.3%59.3%–––72.3%
–––68.1%66.7%–––61.5%
–––43.9%45.2%–––42.8%
–––62.5%52.6%–––61.8%
–––65.9%65.7%–––63.9%
Return
–––43.2%35.3%–––31.8%
–––35.6%16.4%–––19.7%
Matches with statistics–––511–––12
Rankings & Race
updated weekly · 52w rolling
Current rank · ATP
#271▲ 13
Points total
202
52-week rolling
Points dropping next week
–
next defending · –
Tournaments played
24
career high · #103
Race position
Not in current race
go to ATP Race →
Head to Head
top rivals · all-time
Career Stats
singles · all-time
Career record
9 – 26
win rate · 25.7%
Titles
0
tour-level singles
Hard
4–17
19% win
Grass
5–8
38% win
Clay
0–1
0% win
Elo rating by surface
Hard1548peak 1698 · 303 matches
Clay1523peak 1543 · 78 matches
Grass1492peak 1543 · 34 matches