H2H data updated: 2026-10-08 00:00 UTC
Christopher O'Connell holds a 1–0 lead over Kamil Majchrzak in their ATP head-to-head. Across 1 main-draw meeting, Christopher O'Connell leads 1–0 on hard courts. Most recently, Christopher O'Connell won the 2026 Cincinnati Open first round 6-4 7-6(5).
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Christopher O'Connell | 6-4 7-6(5) | Kamil Majchrzak | Match data | Aug 14, 2026 | R128 | Cincinnati Open | Masters 1000 | Hard |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kamil Majchrzak | #70 | #45 | 1,032 | 1,823 | 49 | 63 | 43.8% | 0 | 0 | 0 | 0 | 1 | 1 |
| Christopher O'Connell | #117 | #53 | 930 | 1,820 | 65 | 99 | 39.6% | 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.
| Age | Kamil Majchrzak | Christopher O'Connell | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 21 | 2017 | 0–1 | 0.0% | #197 | 1,526 | 0 | 0 | — | — | — | — | — | — | — |
| 23 | 2019 | 3–6 | 33.3% | #101 | 1,675 | 0 | 0 | 2017 | 0–2 | 0.0% | #393 | 1,524 | 0 | 0 |
| 24 | 2020 | 0–3 | 0.0% | #107 | 1,612 | 0 | 0 | — | — | — | — | — | — | — |
| 25 | 2021 | 4–8 | 33.3% | #117 | 1,660 | 0 | 0 | — | — | — | — | — | — | — |
| 26 | 2022 | 12–14 | 46.2% | #77 | 1,663 | 0 | 0 | 2020 | 1–2 | 33.3% | #120 | 1,510 | 0 | 0 |
| 27 | — | — | — | — | — | — | — | 2021 | 4–9 | 30.8% | #175 | 1,660 | 0 | 0 |
| 28 | — | — | — | — | — | — | — | 2022 | 6–12 | 33.3% | #78 | 1,708 | 0 | 0 |
| 29 | 2025 | 14–13 | 51.9% | #62 | 1,751 | 0 | 0 | 2023 | 19–23 | 45.2% | #68 | 1,719 | 0 | 0 |
| 30 | 2026 | 16–18 | 47.1% | #70 | 1,731 | 0 | 1 | 2024 | 17–22 | 43.6% | #64 | 1,741 | 0 | 0 |
| 31 | — | — | — | — | — | — | — | 2025 | 13–21 | 38.2% | #116 | 1,658 | 0 | 0 |
| 32 | — | — | — | — | — | — | — | 2026 | 5–8 | 38.5% | #117 | 1,672 | 0 | 0 |
Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Age | Kamil Majchrzak | Christopher O'Connell | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Yr | Hard | Clay | Grass | |||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 21 | 2017 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2019 | 2 | 4 | 6 | 33.3% | — | — | — | — | 1 | 2 | 3 | 33.3% | 2017 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — |
| 24 | 2020 | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2021 | 2 | 5 | 7 | 28.6% | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2022 | 9 | 9 | 18 | 50.0% | 2 | 3 | 5 | 40.0% | 1 | 2 | 3 | 33.3% | 2020 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — |
| 27 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2021 | 4 | 6 | 10 | 40.0% | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% |
| 28 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2022 | 5 | 9 | 14 | 35.7% | 1 | 2 | 3 | 33.3% | 0 | 1 | 1 | 0.0% |
| 29 | 2025 | 7 | 7 | 14 | 50.0% | 4 | 5 | 9 | 44.4% | 3 | 1 | 4 | 75.0% | 2023 | 7 | 12 | 19 | 36.8% | 8 | 8 | 16 | 50.0% | 4 | 3 | 7 | 57.1% |
| 30 | 2026 | 9 | 13 | 22 | 40.9% | 1 | 3 | 4 | 25.0% | 6 | 2 | 8 | 75.0% | 2024 | 17 | 17 | 34 | 50.0% | 0 | 4 | 4 | 0.0% | 0 | 1 | 1 | 0.0% |
| 31 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2025 | 10 | 13 | 23 | 43.5% | 3 | 5 | 8 | 37.5% | 0 | 3 | 3 | 0.0% |
| 32 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2026 | 5 | 7 | 12 | 41.7% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| Career | — | 29 | 39 | 68 | 42.6% | 9 | 16 | 25 | 36.0% | 11 | 8 | 19 | 57.9% | — | 49 | 68 | 117 | 41.9% | 12 | 22 | 34 | 35.3% | 4 | 9 | 13 | 30.8% |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 110/113 of Kamil Majchrzak's and 162/166 of Christopher O'Connell's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.
| Age | Kamil Majchrzak | Christopher O'Connell | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | |
| 21 | 2017 | 1/1 | 4.0 | 2.0 | 52.2% | 68.6% | 46.9% | 50.0% | 50.0% | 58.2% | 24.1% | — | —/— | — | — | — | — | — | — | — | — | — |
| 23 | 2019 | 9/9 | 7.2 | 5.4 | 58.5% | 73.0% | 50.4% | 51.3% | 37.6% | 63.7% | 33.6% | 2017 | 2/2 | 4.0 | 3.5 | 62.1% | 64.7% | 50.0% | 65.7% | 6.7% | 59.0% | 26.2% |
| 24 | 2020 | 3/3 | 6.0 | 4.0 | 53.3% | 67.2% | 45.7% | 49.7% | 47.2% | 56.6% | 30.3% | — | —/— | — | — | — | — | — | — | — | — | — |
| 25 | 2021 | 11/12 | 5.6 | 2.1 | 62.8% | 68.0% | 45.7% | 62.7% | 41.0% | 60.3% | 34.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| 26 | 2022 | 26/26 | 5.7 | 1.9 | 61.3% | 72.3% | 51.8% | 66.5% | 41.3% | 64.4% | 35.5% | 2020 | 3/3 | 7.7 | 2.0 | 63.9% | 68.4% | 49.5% | 72.2% | 42.9% | 61.5% | 32.9% |
| 27 | — | —/— | — | — | — | — | — | — | — | — | — | 2021 | 13/13 | 8.2 | 1.2 | 62.9% | 75.2% | 52.0% | 60.8% | 40.3% | 66.5% | 32.1% |
| 28 | — | —/— | — | — | — | — | — | — | — | — | — | 2022 | 18/18 | 8.3 | 2.6 | 63.4% | 71.2% | 48.3% | 61.9% | 32.8% | 62.7% | 34.7% |
| 29 | 2025 | 26/27 | 6.2 | 1.8 | 62.3% | 72.3% | 51.7% | 51.7% | 37.7% | 64.5% | 37.5% | 2023 | 42/42 | 6.9 | 1.9 | 62.0% | 73.1% | 50.7% | 61.9% | 32.8% | 64.6% | 34.0% |
| 30 | 2026 | 34/35 | 7.2 | 1.9 | 63.8% | 72.1% | 53.9% | 53.6% | 36.3% | 65.4% | 34.8% | 2024 | 39/39 | 7.5 | 2.0 | 59.5% | 73.7% | 50.7% | 61.7% | 34.2% | 64.3% | 33.4% |
| 31 | — | —/— | — | — | — | — | — | — | — | — | — | 2025 | 33/34 | 6.3 | 1.8 | 59.5% | 68.7% | 49.2% | 60.6% | 30.5% | 60.5% | 34.2% |
| 32 | — | —/— | — | — | — | — | — | — | — | — | — | 2026 | 12/15 | 8.6 | 1.5 | 56.7% | 71.8% | 47.5% | 57.3% | 39.4% | 61.2% | 31.1% |
Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. 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 | Kamil Majchrzak | Christopher O'Connell | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 21 | 2017 | 1526 | 107.3 | -0.17 | -1.59 | 0.578 | 42.4% | — | — | — | 0.0% | -2.50 | — | 0–1 | — | -0.05 | 2015 | 1495 | 104.2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2018 | 1517 | 102.0 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2019 | 1675 | 126.9 | -0.35 | -0.48 | 0.926 | 48.3% | -10 | — | +21 | 36.0% | -0.80 | 2–1 (67%) | 3–4 (43%) | 101.8 | +0.35 | 2017 | 1525 | 115.5 | -0.12 | -0.17 | 0.638 | 43.9% | — | — | — | 16.7% | -2.17 | 0–1 | 1–1 | — | -0.10 |
| 24 | 2020 | 1612 | 113.6 | -1.49 | -0.22 | 0.697 | 44.3% | — | — | — | 0.0% | -2.75 | — | 0–2 | — | -0.04 | 2018 | 1518 | 105.8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2021 | 1661 | 123.9 | -1.34 | -1.11 | 0.875 | 48.0% | -45 | -39 | — | 37.5% | -0.97 | 0–2 | 1–1 | — | +0.67 | 2019 | 1494 | 99.2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2022 | 1663 | 128.8 | +0.34 | -0.25 | 0.995 | 50.3% | -9 | -61 | -7 | 49.2% | +0.06 | 3–5 (38%) | 4–8 (33%) | 95.3 | +1.31 | 2020 | 1510 | 117.0 | +2.22 | +2.41 | 0.854 | 48.6% | +35 | — | — | 36.4% | -0.55 | — | 1–1 | — | -0.18 |
| 27 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2021 | 1661 | 126.7 | +0.93 | -2.95 | 0.959 | 49.2% | -16 | — | — | 43.9% | -0.29 | 2–7 (22%) | 7–6 (54%) | 97.7 | -0.33 |
| 28 | 2024 | 1658 | 108.6 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2022 | 1708 | 136.6 | -1.02 | -1.54 | 0.930 | 48.9% | -4 | -132 | — | 42.6% | -0.43 | 1–5 (17%) | 8–6 (57%) | 99.0 | -0.26 |
| 29 | 2025 | 1752 | 136.4 | -0.04 | +1.62 | 1.056 | 51.0% | -22 | -149 | -21 | 53.5% | +0.34 | 3–5 (38%) | 7–7 (50%) | 99.4 | -0.42 | 2023 | 1720 | 137.5 | +0.91 | -1.80 | 0.960 | 49.3% | -32 | -99 | +28 | 45.4% | -0.32 | 7–8 (47%) | 16–12 (57%) | 103.4 | -1.95 |
| 30 | 2026 | 1731 | 144.7 | +0.33 | -0.01 | 1.005 | 50.1% | -24 | -147 | +75 | 48.4% | -0.12 | 7–8 (47%) | 15–12 (56%) | 101.9 | -1.38 | 2024 | 1742 | 145.4 | -0.18 | -0.88 | 0.933 | 49.0% | +1 | -145 | — | 45.7% | -0.29 | 2–4 (33%) | 7–8 (47%) | 99.1 | -1.68 |
| 31 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2025 | 1659 | 134.1 | -2.50 | -1.21 | 0.866 | 47.8% | +93 | -88 | -11 | 38.7% | -0.73 | 4–4 (50%) | 5–9 (36%) | 98.1 | -0.58 |
| 32 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2026 | 1672 | 124.8 | -2.08 | -2.91 | 0.800 | 46.8% | +74 | — | — | 33.3% | -1.22 | 1–2 (33%) | 4–3 (57%) | 98.6 | -0.19 |
| Career | — | 1823 | 136.7 | -0.03 | +0.15 | 0.979 | 49.8% | -20 | -106 | +31 | 45.9% | -0.21 | 15–21 (42%) | 30–35 (46%) | 96.6 | +0.39 | — | 1821 | 140.3 | -0.47 | -1.51 | 0.911 | 48.6% | +20 | -105 | +16 | 42.3% | -0.49 | 17–31 (35%) | 49–46 (52%) | 98.0 | -3.25 |
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 |
|---|---|---|---|---|---|
| Karen Khachanov | 1 | 4 | 5 | Aug 28, 2025 | H2H |
| Miomir Kecmanovic | 1 | 3 | 4 | Mar 19, 2026 | H2H |
| Alejandro Tabilo | 1 | 2 | 3 | Jun 30, 2026 | H2H |
| Alex de Minaur | 1 | 2 | 3 | Jun 14, 2026 | H2H |
| Hamad Medjedovic | 1 | 1 | 2 | Aug 30, 2026 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Taylor Fritz | 0 | 4 | 4 | Aug 19, 2026 | H2H |
| Grigor Dimitrov | 1 | 3 | 4 | Feb 26, 2025 | H2H |
| Marton Fucsovics | 0 | 3 | 3 | Mar 20, 2026 | H2H |
| Ugo Humbert | 1 | 2 | 3 | Feb 13, 2026 | H2H |
| Roberto Bautista Agut | 1 | 2 | 3 | Feb 2, 2026 | H2H |