ATP · USA · Right-handed · 183 cm · 28.5 yrs

Stefan Kozlov

Rank

#265

Elo

1740

Serve skill

0.075 ±1.382

Return skill

0.282 ±1.364

Points observed

66,980

Hard Elo

1719

Clay Elo

1683

Grass Elo

1550

The ± bands are the rating engine's uncertainty — they widen during absences and tighten with play. We show them instead of pretending the point estimate is exact.

Season record

17-16

Clay

5-5

Hard

12-11

Career

253-230

Titles

Best rank

#103

Rest days

Matches (14d)

Last 10 matches

Lvs — · <NA> · Hard7-5 6-12026-07-25

Wvs Mario Mansilla Diez · Valencia CH · Clay6-2 6-12026-05-12

Lvs Alejo Sanchez Quilez · Valencia CH · Clay7-5 6-42026-05-12

Wvs Daniil Glinka · Savannah CH · Clay6-2 6-32026-04-20

Lvs Nick Hardt · Savannah CH · Clay6-2 2-6 6-02026-04-20

Wvs Kilian Feldbausch · Tallahassee CH · Clay6-1 4-6 7-6(2)2026-04-13

Wvs Strong Kirchheimer · Tallahassee CH · Clay6-0 6-42026-04-13

Lvs Alex Rybakov · Tallahassee CH · Clay7-6(3) 6-22026-04-13

Wvs Raphael Perot · Mexico City CH · Clay6-3 6-12026-04-06

Lvs James Duckworth · Mexico City CH · Clay6-3 6-22026-04-06

As of 2026-08-13 16:15 UTC — this player hasn't been on a recent slate, so the snapshot is 17 days old. · For informational purposes only; not betting advice.