Stefan Kozlov
ATP · ranked No. 290
Elo1,613No. 410 by Elo
Elo · hard1,595No. 383 on this surface
Elo · clay1,614No. 366 on this surface
Elo · grass1,593No. 277 on this surface
ATP ranking290
Season 202623–24no title
Elo over the last 2 years
Season 2026
| Surface | Record | Won |
|---|---|---|
| Hard court | 15–18 | 45% |
| Clay | 5–5 | 50% |
| Grass | 3–1 | 75% |
| Record · Titles: 0 | 23–24 | 49% |
Serve profile vs the tour (12 months)
Matches with stats from the last 12 months, pulled towards the tour average on a small sample.
| Stefan Kozlov | Tour | |
|---|---|---|
| Service points won | 61% | 62% |
| Return points won | 42% | 38% |
| Service games held | 73% | 76% |
| Breaks of serve | 31% | 24% |
| Aces per service game | 0.24 | |
| Double faults per game | 0.30 | |
| Sets with a tie-break | 11% | |
| Tie-breaks won | 7/16 | |
| Wins in straight sets | 52% | |
| Matches in the sample | 57 |
Form: recent matches
- 01/10/26LMitchell Krueger#340Challenger Columbus · R162:6 6:3 3:6
- 29/09/26WJames Kent Trotter#464Challenger Columbus · R326:3 6:2
- 22/09/26LColton Smith#212Challenger San Diego 2 · R324:6 2:6
- 15/09/26LDarwin Blanch#159Challenger Tiburon · R323:6 6:2 6:7
- 13/08/26LHarry Wendelken#182Challenger Brownsburg · R166:2 4:6 1:6
- 12/08/26WAidan Mayo#341Challenger Brownsburg · R326:3 5:7 6:2
- 25/07/26LZachary Svajda#82ATP Washington · Q15:7 1:6
- 21/07/26LAlan Magadan#523Challenger Bloomfield Hills · R326:3 1:6 6:7
- 20/07/26LRoger Pascual Ferra#652Challenger Bloomfield Hills · Q24:6 4:6
- 19/07/26WLeo Vithoontien#733Challenger Bloomfield Hills · Q14:6 6:1 6:2
- 14/07/26LYi Zhou#277Challenger Pozoblanco · R323:6 6:3 4:6
- 09/07/26LJacob Fearnley#96Challenger Newport · R166:3 3:6 2:6
- 09/07/26WYibing Wu#113Challenger Newport · R326:4 2:6 6:4
- 07/07/26WGarrett Johns#441Challenger Newport · Q26:4 6:2
- 05/07/26WAidan Mayo#341Challenger Newport · Q17:6 5:7 6:3
- 12/05/26LAlejo Sanchez Quilez#375Challenger Valencia · Q25:7 4:6
- 11/05/26WMario Mansilla DiezChallenger Valencia · Q16:2 6:1
- 22/04/26LNick Hardt#281Challenger Savannah · R162:6 6:2 0:6
- 20/04/26WDaniil Glinka#178Challenger Savannah · R326:2 6:3
- 14/04/26LAlex Rybakov#707Challenger Tallahassee · R326:7 2:6