Stefan Kozlov
United States

Stefan Kozlov: Ranking, Schedule & Stats

ATP Rank
#296
Age
28
Height
183 cm (6'0")
Plays
Right
1429 Elo

Stefan Kozlov is a professional tennis player from United States, born 1 February 1998. The American competes on the ATP Tour and plays right-handed. Kozlov stands 183 cm (6 ft 0 in) tall and weighs 77 kg (170 lb). The American's career numbers favour clay (52%, 55-50) over hard (51%, 193-185) and grass (42%, 22-30). The American was born in Skopje and is based in Pembroke Pines.

This page tracks Stefan Kozlov's upcoming schedule, latest results, recent form and surface record, with each match linking through to a detailed head-to-head and pre-match analysis. Scores update live as matches are played.

Biographical details (birthplace, residence, coach, height, weight) sourced from Wikidata (CC0 public domain). See Stefan Kozlov on Wikipedia for more.

Rankings

Recent form

46 last 10

Trends

Kozlov has won 15 of the last 30 first sets

50%

Kozlov has won 6 of 12 deciding sets

50%

Kozlov has won 58% of matches on clay

29–21

Kozlov has won 4 of the last 10 matches

40%

Ranking Projection

No. 296ATP185 pts
12 months agoNo. 451 155 spots
12-month highNo. 256
Expected (draw model)→ ~No. 289
If wins Brownsburg→ ~No. 218

Trajectory from our weekly snapshots. Defending— points dropping in the next ~12 weeks (last year's results at the same events). Win … — points gained by winning the round they're currently in. Expected — most likely landing rank from our draw model (Elo over the bracket). ATP points table.

Clutch Rating

11/ 100Struggles under pressure
Break points saved
29
Break points won
35
Deciding sets
54
Tiebreaks
7

How a player performs in the biggest moments, across 158 matches in our records. About

Freshness

83/ 100Fresh

6 days rest · 2 matches, 54 games (7d)

Recent on-court load (higher = fresher), updated daily. About

Career highs

Ranking · last 12 monthsbestnow
No. 256No. 471
No. 450 · 25 Aug 2025No. 448 · 8 Sep 2025No. 451 · 15 Sep 2025No. 447 · 22 Sep 2025No. 448 · 29 Sep 2025No. 450 · 13 Oct 2025No. 449 · 20 Oct 2025No. 469 · 27 Oct 2025No. 471 · 3 Nov 2025No. 458 · 10 Nov 2025No. 306 · 17 Nov 2025No. 304 · 24 Nov 2025No. 292 · 1 Dec 2025No. 292 · 8 Dec 2025No. 292 · 15 Dec 2025No. 290 · 22 Dec 2025No. 289 · 29 Dec 2025No. 287 · 5 Jan 2026No. 280 · 12 Jan 2026No. 285 · 19 Jan 2026No. 283 · 2 Feb 2026No. 273 · 9 Feb 2026No. 272 · 16 Feb 2026No. 259 · 23 Feb 2026No. 270 · 2 Mar 2026No. 265 · 16 Mar 2026No. 260 · 30 Mar 2026No. 265 · 6 Apr 2026No. 259 · 13 Apr 2026No. 256 · 20 Apr 2026No. 265 · 4 May 2026No. 258 · 18 May 2026No. 292 · 25 May 2026No. 292 · 30 May 2026No. 292 · 1 Jun 2026No. 319 · 8 Jun 2026No. 319 · 15 Jun 2026No. 319 · 17 Jun 2026No. 319 · 18 Jun 2026No. 319 · 22 Jun 2026No. 322 · 28 Jun 2026No. 322 · 29 Jun 2026No. 317 · 6 Jul 2026No. 296 · 13 Jul 2026No. 296 · 14 Jul 2026No. 296 · 16 Jul 2026No. 296 · 20 Jul 2026No. 292 · 28 Jul 2026No. 295 · 3 Aug 2026No. 295 · 9 Aug 2026No. 295 · 10 Aug 2026No. 296 · 17 Aug 2026
12 mo agonow
Umpiry Rating 1691 · peak 1822 · 2022Umpiry rank #371 · ATP #29675

Ranking trajectory from our weekly snapshots (last ~12 months); peak rating and longest tour-level win streak from our match records. Umpiry rank is the player’s position by our rating — the arrow shows how many spots that is above (▲) or below (▼) their official ranking.

2026 season form

2223W–L49%

Last 60 days
56
Current streak
5 losses

Recent surface record

Clay2921 (58%)
Hard6266 (48%)
Grass1011 (48%)
Carpet01 (0%)

Career record

271268W–L

Career surface record

Clay5550 (52%)
Hard193185 (51%)
Grass2230 (42%)
Carpet13 (25%)

Recent results

L
Brownsburg · Round of 16 · hard
6-24-61-6
W
Brownsburg · Round of 32 · hard
6-35-76-2
L
Washington · Qual. Semi-final · hard
5-71-6
L
Bloomfield Hills · Round of 32 · hard
6-31-66-74
L
Bloomfield Hills · Qual. Final · hard
4-64-6
W
Bloomfield Hills · Qual. Semi-final · hard
4-66-16-2
L
Pozoblanco · Round of 32 · hard
3-66-34-6
L
Newport · Round of 16 · grass
6-33-62-6
W
Newport · Round of 32 · grass
6-42-66-4
W
Newport · Qual. Final · grass
6-46-2
W
Newport · Qual. Semi-final · grass
7-65-76-3
L
Valencia · Qual. Final · clay
5-74-6
L
Valencia CH · Qual. Q2 · clay
5-74-6
W
Valencia CH · Qual. Q1 · clay
6-26-1
W
Valencia · Qual. Semi-final · clay
6-26-1

Exhibitions & team events

Shown for completeness — not counted in form, surface, or career stats. 5 matches (exhibitions, Davis / Laver / United Cup).

W
M25 Xalapa 1 · Final · hard
6-746-46-4
W
M25 Xalapa 1 · Semi-final · hard
2-66-16-4
W
M25 Xalapa 1 · Quarter-final · hard
6-46-4
W
M25 Xalapa 1 · Round of 16 · hard
6-46-4
W
vsSanchez Ballinas M.
M25 Xalapa 1 · Round of 32 · hard
6-16-1

Head-to-head records

More United States players

Explore the rankings

Frequently asked questions

How tall is Stefan Kozlov?

Stefan Kozlov is 183 cm (6 ft 0 in) tall.

How much does Stefan Kozlov weigh?

Stefan Kozlov weighs 77 kg (170 lb), according to Wikidata records.

When was Stefan Kozlov born?

Stefan Kozlov was born on 1 February 1998 (28 years old).

Where is Stefan Kozlov from?

Stefan Kozlov is from United States, born in Skopje on 1 February 1998.

Is Stefan Kozlov right or left-handed?

Stefan Kozlov plays right-handed.

How good is Stefan Kozlov on clay?

Stefan Kozlov's clay-court record stands at 55-50, a 52% win rate.

How good is Stefan Kozlov on hard?

Stefan Kozlov has won 51% of hard-court matches (193-185).

How good is Stefan Kozlov on grass?

On grass, Stefan Kozlov has compiled a 22-30 record (42% wins).