H2H data updated: 2026-09-02 00:00 UTC
Compare the head-to-head record, career totals, season-by-season performance, and match log for Alexander Bublik vs Boris Kozlov.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Alexander Bublik | 6-1 6-4 | Boris Kozlov | Match data | Feb 19, 2018 | Q1 | Delray Beach Open | ATP 250 | Hard |
1 qualifying meeting shown in the table; qualifying is excluded from the H2H score. 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alexander Bublik | #16 | #10 | 3,445 | 2,043 | 204 | 178 | 53.4% | 0 | 0 | 0 | 2 | 7 | 9 |
| Boris Kozlov | #2,073 | #1,600 | 1 | 1,500 | 0 | 0 | — | 0 | 0 | 0 | 0 | 0 | 0 |
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Alexander Bublik | Boris Kozlov | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 2016 | 2–2 | 50.0% | #205 | 1,571 | 0 | 0 | — | — | — | — | — | — | — |
| 2017 | 3–3 | 50.0% | #117 | 1,633 | 0 | 0 | — | — | — | — | — | — | — |
| 2018 | 1–4 | 20.0% | #162 | 1,613 | 0 | 0 | — | — | — | — | — | — | — |
| 2019 | 13–14 | 48.1% | #56 | 1,726 | 0 | 0 | — | — | — | — | — | — | — |
| 2020 | 12–16 | 42.9% | #50 | 1,736 | 0 | 0 | — | — | — | — | — | — | — |
| 2021 | 33–29 | 53.2% | #36 | 1,758 | 0 | 0 | — | — | — | — | — | — | — |
| 2022 | 30–25 | 54.5% | #37 | 1,849 | 0 | 1 | — | — | — | — | — | — | — |
| 2023 | 22–24 | 47.8% | #32 | 1,832 | 0 | 3 | — | — | — | — | — | — | — |
| 2024 | 25–24 | 51.0% | #33 | 1,743 | 0 | 4 | — | — | — | — | — | — | — |
| 2025 | 37–21 | 63.8% | #11 | 1,973 | 0 | 8 | — | — | — | — | — | — | — |
| 2026 | 26–16 | 61.9% | #16 | 1,892 | 0 | 9 | — | — | — | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. 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.
| Alexander Bublik | Boris Kozlov | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 2014 | 1489 | 100.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2017 | 1493 | 101.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2015 | 1502 | 100.0 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2018 | 1483 | 98.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2016 | 1571 | 117.0 | -0.93 | +1.37 | 0.928 | 48.4% | +32 | — | — | 50.0% | 0.00 | 1–1 | 0–1 | — | +0.14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2017 | 1633 | 113.7 | +0.13 | -1.94 | 0.861 | 47.9% | +12 | — | — | 41.2% | -0.59 | 1–0 | — | — | +0.20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2018 | 1614 | 112.3 | -3.55 | -0.99 | 0.747 | 44.9% | +40 | — | — | 18.2% | -1.91 | 1–0 | 1–1 | — | +0.08 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2019 | 1726 | 136.5 | -1.62 | -1.41 | 0.892 | 48.3% | -18 | — | -2 | 47.3% | -0.39 | 9–4 (69%) | 12–7 (63%) | — | +0.52 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2020 | 1736 | 146.1 | -0.83 | -1.50 | 0.885 | 47.9% | -15 | -119 | — | 40.6% | -0.62 | 5–2 (71%) | 5–5 (50%) | — | -1.93 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2021 | 1759 | 145.2 | +0.17 | -1.28 | 0.945 | 49.4% | -21 | -133 | +41 | 53.3% | +0.15 | 11–9 (55%) | 10–13 (43%) | — | +1.36 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2022 | 1850 | 148.0 | +1.34 | -0.05 | 1.025 | 50.4% | -19 | -249 | +56 | 52.6% | +0.05 | 10–6 (63%) | 13–12 (52%) | — | -0.06 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2023 | 1833 | 143.1 | +1.37 | -0.14 | 1.000 | 50.2% | -83 | -251 | +189 | 47.4% | -0.29 | 7–8 (47%) | 11–13 (46%) | — | -1.48 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2024 | 1744 | 143.0 | -1.43 | +0.14 | 0.947 | 49.3% | +24 | -96 | +200 | 46.5% | -0.24 | 12–3 (80%) | 9–10 (47%) | — | +1.00 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2025 | 1973 | 151.5 | +3.32 | -0.31 | 1.049 | 51.1% | -111 | -85 | +1 | 61.2% | +0.52 | 8–8 (50%) | 13–10 (57%) | — | -1.60 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2026 | 1892 | 148.2 | +2.17 | -1.18 | 1.023 | 50.3% | +25 | -57 | +87 | 57.7% | +0.29 | 9–4 (69%) | 17–10 (63%) | — | +0.13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 2044 | 147.7 | +0.72 | -0.63 | 0.972 | 49.7% | -27 | -124 | +86 | 51.4% | -0.03 | 74–45 (62%) | 91–82 (53%) | 113.8 | -0.43 | Career | 1500 | 100.0 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Taylor Fritz | 4 | 4 | 8 | Jul 6, 2026 | H2H |
| Jan-Lennard Struff | 4 | 4 | 8 | Jun 10, 2026 | H2H |
| Jannik Sinner | 2 | 6 | 8 | Oct 25, 2025 | H2H |
| Andrey Rublev | 3 | 5 | 8 | Apr 28, 2025 | H2H |
| Felix Auger-Aliassime | 2 | 5 | 7 | Feb 14, 2026 | H2H |
No career rivalry data available.