Stefan Kozlov
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Steve Johnson | 3 | 2 | 5 | Jul 14, 2022 | H2H |
| Sam Querrey | 0 | 2 | 2 | Aug 15, 2017 | H2H |
| Donald Young | 0 | 2 | 2 | Mar 11, 2017 | H2H |
| J.J. Wolf | 0 | 1 | 1 | Sep 22, 2022 | H2H |
| Daniil Medvedev | 0 | 1 | 1 | Aug 31, 2022 | H2H |
H2H data updated: 2026-09-03 00:00 UTC
Stefan Kozlov vs Malek Jaziri
Compare the head-to-head record, career totals, season-by-season performance, and match log for Stefan Kozlov vs Malek Jaziri.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H
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0 main draw meetings
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Malek Jaziri | 6-4 6-2 | Stefan Kozlov | Match data | Aug 14, 2016* | Q2 | Cincinnati Open | Masters 1000 | Hard |
1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stefan Kozlov | #297 | #103 | 558 | 1,673 | 9 | 26 | 25.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| Malek Jaziri | #1,645 | #42 | 1,042 | 1,843 | 84 | 136 | 38.2% | 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 | Malek Jaziri | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | — | — | — | — | — | — | — |
| 22 | 2020 | 0–1 | 0.0% | #371 | 1,514 | 0 | 0 | — | — | — | — | — | — | — |
| 23 | 2021 | 0–1 | 0.0% | #159 | 1,550 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 2022 | 4–8 | 33.3% | #198 | 1,529 | 0 | 0 | — | — | — | — | — | — | — |
| 27 | — | — | — | — | — | — | — | 2011 | 1–1 | 50.0% | #118 | 1,536 | 0 | 0 |
| 28 | — | — | — | — | — | — | — | 2012 | 6–11 | 35.3% | #116 | 1,603 | 0 | 0 |
| 29 | — | — | — | — | — | — | — | 2013 | 0–1 | 0.0% | #168 | 1,606 | 0 | 0 |
| 30 | — | — | — | — | — | — | — | 2014 | 8–11 | 42.1% | #76 | 1,687 | 0 | 0 |
| 31 | — | — | — | — | — | — | — | 2015 | 12–20 | 37.5% | #103 | 1,681 | 0 | 0 |
| 32 | — | — | — | — | — | — | — | 2016 | 15–22 | 40.5% | #58 | 1,724 | 0 | 0 |
| 33 | — | — | — | — | — | — | — | 2017 | 13–22 | 37.1% | #98 | 1,697 | 0 | 0 |
| 34 | — | — | — | — | — | — | — | 2018 | 20–22 | 47.6% | #45 | 1,716 | 0 | 0 |
| 35 | — | — | — | — | — | — | — | 2019 | 6–17 | 26.1% | #201 | 1,555 | 0 | 0 |
| 36 | — | — | — | — | — | — | — | 2020 | 0–2 | 0.0% | #249 | 1,530 | 0 | 0 |
| 37 | — | — | — | — | — | — | — | 2021 | 2–3 | 40.0% | #312 | 1,522 | 0 | 0 |
| 38 | — | — | — | — | — | — | — | 2022 | 1–3 | 25.0% | #433 | 1,508 | 0 | 0 |
| 39 | — | — | — | — | — | — | — | 2023 | 0–1 | 0.0% | #1645 | 1,504 | 0 | 0 |
Advanced Statistics Comparison by Age
Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Age | Stefan Kozlov | Malek Jaziri | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | |
| 15 | 2013 | 1490 | 100.2 | -4.35 | +1.56 | 0.828 | 46.1% | — | — | — | 33.3% | -1.33 | 0–1 | 1–0 | — | +0.13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 16 | 2014 | 1454 | 100.0 | +0.67 | 0.00 | 0.813 | 45.3% | — | — | — | 0.0% | -3.00 | — | — | — | -0.04 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 2015 | 1420 | 101.3 | -5.76 | -0.97 | 0.718 | 41.8% | — | — | — | 0.0% | -3.50 | — | — | — | +0.21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 2016 | 1481 | 107.5 | -3.43 | +1.33 | 0.891 | 48.1% | — | — | +119 | 54.5% | +0.09 | 1–0 | — | — | -0.03 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2017 | 1550 | 118.7 | -5.47 | -0.25 | 0.757 | 44.9% | -74 | — | +123 | 21.7% | -1.70 | 2–1 (67%) | 0–3 (0%) | — | +0.21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2018 | 1528 | 106.2 | +0.19 | -0.20 | 0.570 | 40.2% | — | — | — | 0.0% | -3.50 | — | — | — | -0.08 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2019 | 1514 | 100.9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2020 | 1514 | 104.1 | -1.24 | +2.90 | 0.705 | 43.9% | — | — | — | 33.3% | -2.33 | 0–1 | 1–0 | — | -0.06 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2021 | 1550 | 110.6 | +2.69 | +0.42 | 0.749 | 44.9% | — | — | — | 0.0% | -3.00 | — | — | — | +0.04 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2022 | 1530 | 118.4 | -4.38 | +0.86 | 0.803 | 45.9% | +20 | — | — | 32.3% | -1.48 | 2–0 | 1–1 | — | -0.54 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2023 | 1458 | 91.9 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2024 | 1433 | 92.7 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2010 | 1457 | 94.2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 2025 | 1436 | 101.4 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2011 | 1536 | 118.9 | -1.79 | +0.89 | 0.949 | 48.5% | — | — | — | 42.9% | -0.14 | — | — | — | -0.05 |
| 28 | 2026 | 1418 | 97.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2012 | 1604 | 124.4 | -3.73 | -1.37 | 0.823 | 46.4% | +6 | -112 | +19 | 43.2% | -0.66 | 3–3 (50%) | 4–4 (50%) | — | +0.22 |
| 29 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2013 | 1606 | 114.7 | +2.69 | +4.26 | 0.531 | 40.8% | — | — | — | 33.3% | -2.67 | 0–1 | — | — | -0.19 |
| 30 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2014 | 1688 | 125.6 | -2.36 | -2.49 | 0.818 | 47.0% | +14 | — | -54 | 41.9% | -0.79 | 2–2 (50%) | 4–5 (44%) | — | +1.41 |
| 31 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2015 | 1681 | 131.4 | -3.13 | -1.13 | 0.876 | 47.9% | +17 | -201 | -48 | 39.8% | -0.58 | 6–6 (50%) | 3–8 (27%) | — | +0.89 |
| 32 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2016 | 1725 | 143.8 | -1.50 | -1.46 | 0.889 | 48.2% | -13 | -156 | -117 | 43.9% | -0.45 | 6–9 (40%) | 8–9 (47%) | — | -0.41 |
| 33 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2017 | 1697 | 145.4 | -3.57 | -0.39 | 0.864 | 47.4% | +47 | -170 | — | 40.0% | -0.74 | 5–7 (42%) | 6–8 (43%) | — | -1.19 |
| 34 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2018 | 1716 | 138.3 | -2.92 | -0.31 | 0.893 | 48.3% | -6 | -3 | -175 | 45.4% | -0.51 | 9–5 (64%) | 7–8 (47%) | — | +0.48 |
| 35 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2019 | 1555 | 125.4 | -4.00 | -2.81 | 0.797 | 46.4% | +71 | +87 | — | 32.1% | -1.09 | 4–4 (50%) | 4–7 (36%) | — | +0.92 |
| 36 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2020 | 1530 | 110.8 | 0.00 | -0.76 | 0.509 | 36.4% | — | — | — | 0.0% | -4.50 | — | — | — | -0.23 |
| 37 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2021 | 1522 | 106.5 | -3.25 | -2.60 | 0.747 | 44.6% | +80 | — | — | 25.0% | -2.13 | — | — | — | -0.02 |
| 38 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2022 | 1509 | 105.1 | -2.52 | -2.80 | 0.659 | 44.2% | — | — | — | 14.3% | -2.72 | 0–1 | 1–0 | — | -0.05 |
| 39 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2023 | 1504 | 99.5 | +0.80 | -2.44 | 0.371 | 30.3% | — | — | — | 0.0% | -5.00 | — | — | — | -0.01 |
| Career | — | 1674 | 113.0 | -4.10 | +0.48 | 0.784 | 45.4% | -15 | — | +121 | 28.4% | -1.58 | 5–3 (63%) | 3–4 (43%) | 104.8 | -0.46 | — | 1843 | 139.1 | -2.86 | -1.24 | 0.845 | 47.2% | +18 | -42 | -70 | 40.4% | -0.74 | 35–38 (48%) | 37–49 (43%) | 101.4 | +0.80 |
Career Rivalries
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
Malek Jaziri
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Kevin Anderson | 1 | 5 | 6 | Aug 3, 2017 | H2H |
| Gilles Simon | 0 | 5 | 5 | Mar 10, 2019 | H2H |
| Alexander Zverev | 2 | 3 | 5 | Oct 5, 2018 | H2H |
| John Isner | 0 | 4 | 4 | Oct 5, 2017 | H2H |
| Marcel Granollers | 1 | 3 | 4 | Apr 26, 2017 | H2H |