H2H data updated: 2026-07-16 19:16 UTC
Stefan Kozlov vs J.J. Wolf H2H: 0-1
J.J. Wolf holds a 1–0 lead over Stefan Kozlov in their ATP head-to-head. Across 1 main-draw meeting, J.J. Wolf leads 1–0 on hard courts. Most recently, J.J. Wolf won the 2022 San Diego third round 6-2 7-6(6).
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United States
Age 28
Right-Handed
183 cm / 6'0"
H2H
0
–
1
1 main draw meetings
United States
Age 27
Right-Handed
183 cm / 6'0"
H2H Match Log
| Date | Tournament | Category | Round | Surface | Winner | Score | Loser | Match |
|---|---|---|---|---|---|---|---|---|
| Sep 22, 2022* | San Diego | ATP 250 | R32 | Hard | J.J. Wolf | 6-2 7-6(6) | Stefan Kozlov | Match data |
* Estimated match date where the exact historical date is unavailable.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 | Finals | 500 | 250 | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stefan Kozlov | #296 | #103 | 558 | 1,673 | 9 | 26 | 25.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| J.J. Wolf | #802 | #39 | 1,025 | 1,849 | 45 | 53 | 45.9% | 0 | 0 | 0 | 0 | 0 | 0 |
Career Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Stefan Kozlov | J.J. Wolf | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 15 | 2013 | 0–1 | 0.0% | #1083 | 1,489 | 0 | 0 | — | — | — | — | — | — | — |
| 16 | 2014 | 0–1 | 0.0% | #467 | 1,453 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 2015 | 0–2 | 0.0% | #351 | 1,420 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 2016 | 3–2 | 60.0% | #116 | 1,481 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | 2017 | 2–9 | 18.2% | #167 | 1,549 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 2018 | 0–1 | 0.0% | #316 | 1,528 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | 2020 | 2–3 | 40.0% | #127 | 1,604 | 0 | 0 |
| 22 | 2020 | 0–1 | 0.0% | #371 | 1,514 | 0 | 0 | 2021 | 0–3 | 0.0% | #174 | 1,557 | 0 | 0 |
| 23 | 2021 | 0–1 | 0.0% | #159 | 1,550 | 0 | 0 | 2022 | 15–13 | 53.6% | #66 | 1,799 | 0 | 0 |
| 24 | 2022 | 4–8 | 33.3% | #198 | 1,529 | 0 | 0 | 2023 | 26–25 | 51.0% | #53 | 1,780 | 0 | 0 |
| 25 | — | — | — | — | — | — | — | 2024 | 2–9 | 18.2% | #261 | 1,629 | 0 | 0 |