H2H data updated: 2026-09-03 00:00 UTC
James Duckworth and Jason Kubler are tied 1–1 in their ATP head-to-head. Across 2 main-draw meetings, Jason Kubler leads 1–0 on grass, while James Duckworth leads 1–0 on hard courts. Most recently, Jason Kubler won the 2022 Newport quarterfinal 7-5 7-6(3).
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 |
|---|---|---|---|---|---|---|---|---|
| Jason Kubler | 7-5 7-6(3) | James Duckworth | Match data | Jul 16, 2022* | QF | Newport | ATP 250 | Grass |
| James Duckworth | 1-6 6-2 7-6(5) | Jason Kubler | Match data | Aug 2, 2018* | R32 | Washington Open | ATP 500 | Hard |
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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| James Duckworth | #71 | #46 | 1,244 | 1,801 | 85 | 134 | 38.8% | 0 | 0 | 0 | 0 | 0 | 0 |
| Jason Kubler | #475 | #63 | 782 | 1,784 | 25 | 34 | 42.4% | 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 | James Duckworth | Jason Kubler | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | — | — | — | — | — | — | — | 2010 | 0–1 | 0.0% | — | 1,466 | 0 | 0 |
| 20 | 2012 | 2–3 | 40.0% | #209 | 1,497 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 2013 | 3–7 | 30.0% | #136 | 1,567 | 0 | 0 | 2014 | 1–1 | 50.0% | #140 | 1,536 | 0 | 0 |
| 22 | 2014 | 1–7 | 12.5% | #127 | 1,594 | 0 | 0 | — | — | — | — | — | — | — |
| 23 | 2015 | 9–11 | 45.0% | #120 | 1,626 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 2016 | 4–8 | 33.3% | #103 | 1,703 | 0 | 0 | — | — | — | — | — | — | — |
| 25 | 2017 | 0–1 | 0.0% | #990 | 1,685 | 0 | 0 | 2018 | 1–4 | 20.0% | #113 | 1,510 | 0 | 0 |
| 26 | 2018 | 2–6 | 25.0% | #234 | 1,610 | 0 | 0 | 2019 | 0–1 | 0.0% | #261 | 1,529 | 0 | 0 |
| 27 | 2019 | 0–3 | 0.0% | #100 | 1,575 | 0 | 0 | — | — | — | — | — | — | — |
| 28 | 2020 | 4–8 | 33.3% | #103 | 1,578 | 0 | 0 | 2021 | 1–1 | 50.0% | #206 | 1,527 | 0 | 0 |
| 29 | 2021 | 22–19 | 53.7% | #49 | 1,791 | 0 | 0 | 2022 | 10–8 | 55.6% | #107 | 1,725 | 0 | 0 |
| 30 | 2022 | 7–13 | 35.0% | #155 | 1,689 | 0 | 0 | 2023 | 11–15 | 42.3% | #102 | 1,658 | 0 | 0 |
| 31 | 2023 | 2–5 | 28.6% | #116 | 1,598 | 0 | 0 | 2024 | 1–2 | 33.3% | #638 | 1,650 | 0 | 0 |
| 32 | 2024 | 9–15 | 37.5% | #82 | 1,636 | 0 | 0 | — | — | — | — | — | — | — |
| 33 | 2025 | 8–12 | 40.0% | #87 | 1,661 | 0 | 0 | 2026 | 0–1 | 0.0% | #475 | 1,647 | 0 | 0 |
| 34 | 2026 | 12–16 | 42.9% | #71 | 1,693 | 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 | James Duckworth | Jason Kubler | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2010 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 20 | 2012 | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2013 | 3 | 5 | 8 | 37.5% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | 2014 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — |
| 22 | 2014 | 0 | 4 | 4 | 0.0% | 0 | 1 | 1 | 0.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2015 | 6 | 8 | 14 | 42.9% | 2 | 2 | 4 | 50.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2016 | 4 | 7 | 11 | 36.4% | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2017 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 2018 | 1 | 3 | 4 | 25.0% | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 26 | 2018 | 2 | 3 | 5 | 40.0% | 0 | 1 | 1 | 0.0% | 0 | 2 | 2 | 0.0% | 2019 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 27 | 2019 | 0 | 3 | 3 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2020 | 4 | 7 | 11 | 36.4% | 0 | 1 | 1 | 0.0% | — | — | — | — | 2021 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — |
| 29 | 2021 | 18 | 15 | 33 | 54.5% | 1 | 1 | 2 | 50.0% | 3 | 3 | 6 | 50.0% | 2022 | 3 | 5 | 8 | 37.5% | 1 | 1 | 2 | 50.0% | 6 | 2 | 8 | 75.0% |
| 30 | 2022 | 5 | 7 | 12 | 41.7% | 0 | 2 | 2 | 0.0% | 2 | 4 | 6 | 33.3% | 2023 | 5 | 7 | 12 | 41.7% | 5 | 5 | 10 | 50.0% | 1 | 3 | 4 | 25.0% |
| 31 | 2023 | 1 | 4 | 5 | 20.0% | — | — | — | — | 1 | 1 | 2 | 50.0% | 2024 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — |
| 32 | 2024 | 5 | 11 | 16 | 31.3% | 1 | 1 | 2 | 50.0% | 3 | 3 | 6 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 2025 | 7 | 7 | 14 | 50.0% | 0 | 2 | 2 | 0.0% | 1 | 3 | 4 | 25.0% | 2026 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 34 | 2026 | 9 | 12 | 21 | 42.9% | 1 | 2 | 3 | 33.3% | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 66 | 97 | 163 | 40.5% | 5 | 14 | 19 | 26.3% | 14 | 23 | 37 | 37.8% | — | 11 | 21 | 32 | 34.4% | 7 | 7 | 14 | 50.0% | 7 | 6 | 13 | 53.8% |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 216/219 of James Duckworth's and 59/59 of Jason Kubler'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 | James Duckworth | Jason Kubler | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | |
| 17 | — | —/— | — | — | — | — | — | — | — | — | — | 2010 | 1/1 | 2.0 | 2.0 | 56.2% | 53.7% | 40.6% | 57.1% | — | 47.9% | 21.0% |
| 20 | 2012 | 5/5 | 7.2 | 3.0 | 57.7% | 71.8% | 47.6% | 56.3% | 54.3% | 60.9% | 35.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| 21 | 2013 | 10/10 | 13.5 | 3.8 | 58.0% | 73.0% | 51.9% | 64.5% | 46.3% | 63.9% | 32.7% | 2014 | 2/2 | 1.0 | 7.5 | 63.9% | 66.2% | 43.2% | 52.8% | 46.4% | 58.2% | 42.0% |
| 22 | 2014 | 8/8 | 9.3 | 2.8 | 60.7% | 72.3% | 48.5% | 63.2% | 41.4% | 62.5% | 27.5% | — | —/— | — | — | — | — | — | — | — | — | — |
| 23 | 2015 | 20/20 | 9.8 | 4.3 | 57.3% | 71.2% | 51.6% | 61.0% | 35.1% | 62.7% | 32.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 24 | 2016 | 12/12 | 10.7 | 3.8 | 52.6% | 73.3% | 52.5% | 70.3% | 40.3% | 63.5% | 34.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 25 | 2017 | 1/1 | 8.0 | 7.0 | 50.0% | 78.9% | 49.3% | 42.9% | 22.2% | 64.1% | 33.3% | 2018 | 5/5 | 5.6 | 7.6 | 61.8% | 67.3% | 41.1% | 49.1% | 46.3% | 57.2% | 40.7% |
| 26 | 2018 | 8/8 | 8.6 | 4.3 | 51.8% | 73.9% | 46.2% | 51.6% | 52.0% | 60.2% | 30.9% | 2019 | 1/1 | 14.0 | 10.0 | 62.7% | 68.4% | 48.9% | 66.7% | 40.0% | 61.1% | 37.8% |
| 27 | 2019 | 3/3 | 8.7 | 5.0 | 59.0% | 68.9% | 43.0% | 47.2% | 62.2% | 58.3% | 32.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 28 | 2020 | 12/12 | 7.4 | 3.5 | 56.5% | 70.3% | 51.4% | 64.9% | 36.5% | 61.9% | 28.4% | 2021 | 2/2 | 3.5 | 5.0 | 64.9% | 68.9% | 45.8% | 58.9% | 50.0% | 60.8% | 34.8% |
| 29 | 2021 | 39/41 | 7.2 | 1.8 | 57.4% | 73.2% | 53.9% | 64.6% | 49.3% | 64.7% | 36.0% | 2022 | 18/18 | 6.2 | 3.9 | 61.6% | 70.5% | 52.2% | 60.0% | 40.8% | 63.7% | 34.5% |
| 30 | 2022 | 20/20 | 7.8 | 2.6 | 54.4% | 72.5% | 52.4% | 51.3% | 50.5% | 63.2% | 32.5% | 2023 | 26/26 | 6.3 | 2.6 | 61.0% | 70.8% | 50.0% | 51.4% | 45.7% | 62.4% | 34.0% |
| 31 | 2023 | 7/7 | 6.9 | 2.7 | 56.8% | 68.8% | 54.9% | 60.9% | 25.3% | 62.9% | 34.9% | 2024 | 3/3 | 5.7 | 2.7 | 67.6% | 61.8% | 38.8% | 51.3% | 27.3% | 55.0% | 35.4% |
| 32 | 2024 | 24/24 | 7.6 | 2.4 | 60.5% | 73.8% | 54.4% | 63.7% | 35.6% | 66.1% | 30.3% | — | —/— | — | — | — | — | — | — | — | — | — |
| 33 | 2025 | 20/20 | 7.3 | 3.2 | 56.7% | 73.3% | 53.5% | 63.3% | 30.2% | 64.8% | 33.9% | 2026 | 1/1 | 9.0 | 3.0 | 73.0% | 69.0% | 45.0% | 33.0% | 17.0% | 63.0% | 33.0% |
| 34 | 2026 | 27/28 | 8.2 | 4.0 | 55.2% | 73.9% | 51.7% | 67.5% | 27.7% | 63.7% | 33.3% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 216/219 | 8.3 | 3.1 | 56.7% | 72.7% | 52.2% | 62.3% | 40.0% | 63.7% | 32.9% | — | 59/59 | 6.0 | 3.8 | 62.0% | 69.4% | 48.7% | 54.2% | 42.1% | 61.5% | 34.9% |
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 | James Duckworth | Jason Kubler | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2010 | 1467 | 96.8 | -2.03 | +0.45 | 0.403 | 35.6% | — | — | — | 0.0% | -4.33 | — | — | — | -0.09 |
| 18 | 2010 | 1475 | 94.2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2011 | 1459 | 103.1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2012 | 1497 | 119.2 | -0.75 | -0.53 | 0.913 | 48.9% | +40 | — | — | 46.2% | -0.46 | — | 0–1 | — | -0.13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2013 | 1567 | 119.2 | +0.09 | -1.67 | 0.906 | 48.8% | -18 | — | — | 42.9% | -0.57 | 1–5 (17%) | 3–1 (75%) | — | +1.12 | 2014 | 1537 | 115.6 | -1.28 | +0.98 | 1.005 | 50.0% | — | — | — | 50.0% | +0.17 | 1–1 | — | — | +0.10 |
| 22 | 2014 | 1594 | 125.2 | -0.36 | -1.26 | 0.732 | 45.5% | -76 | — | +178 | 28.0% | -1.72 | 1–3 (25%) | 3–3 (50%) | — | -0.71 | 2015 | 1489 | 98.0 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2015 | 1626 | 136.9 | -0.93 | -2.27 | 0.868 | 48.1% | -5 | -41 | — | 44.1% | -0.51 | 5–5 (50%) | 9–9 (50%) | — | +1.27 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2016 | 1704 | 136.2 | -0.18 | -0.59 | 0.937 | 49.5% | +28 | — | — | 35.5% | -0.23 | 1–3 (25%) | 1–6 (14%) | — | -0.30 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2017 | 1685 | 103.8 | -1.10 | -1.52 | 0.928 | 48.8% | — | — | — | 25.0% | -1.00 | — | 1–1 | — | +0.01 | 2018 | 1510 | 112.6 | -1.44 | +1.58 | 0.950 | 49.1% | -35 | — | — | 42.9% | -0.14 | 0–1 | 0–2 | — | +0.15 |
| 26 | 2018 | 1611 | 118.6 | -1.08 | -1.76 | 0.777 | 46.3% | +34 | — | — | 27.3% | -1.55 | 1–1 | 2–2 (50%) | — | +0.19 | 2019 | 1530 | 105.3 | -1.20 | -1.56 | 0.971 | 49.0% | — | — | — | 25.0% | -0.50 | — | 0–1 | — | +0.12 |
| 27 | 2019 | 1576 | 127.0 | +1.83 | +0.41 | 0.776 | 46.1% | +37 | — | — | 12.5% | -1.75 | 0–1 | — | — | -0.63 | 2020 | 1519 | 102.8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2020 | 1578 | 119.3 | -1.38 | -4.27 | 0.744 | 46.1% | +20 | — | — | 35.5% | -1.03 | 1–1 | 5–4 (56%) | — | +0.39 | 2021 | 1528 | 111.3 | -0.24 | -0.31 | 0.888 | 47.9% | — | — | — | 40.0% | -0.20 | 1–0 | 0–1 | — | -0.22 |
| 29 | 2021 | 1792 | 142.4 | +0.90 | -0.46 | 1.020 | 50.4% | -13 | — | -28 | 52.8% | +0.10 | 6–6 (50%) | 10–10 (50%) | — | +1.53 | 2022 | 1725 | 126.9 | -0.18 | -1.45 | 0.949 | 49.3% | -162 | — | +130 | 54.2% | +0.23 | 3–1 (75%) | 7–4 (64%) | — | +0.55 |
| 30 | 2022 | 1689 | 127.7 | -0.46 | -2.35 | 0.884 | 48.4% | +38 | — | +60 | 39.0% | -0.51 | 5–5 (50%) | 4–7 (36%) | — | +0.30 | 2023 | 1659 | 127.6 | -0.92 | -1.71 | 0.905 | 48.5% | -65 | -2 | +115 | 42.9% | -0.46 | 3–4 (43%) | 3–5 (38%) | — | -0.03 |
| 31 | 2023 | 1598 | 108.9 | -1.00 | -0.94 | 0.940 | 49.1% | +42 | — | — | 36.8% | -0.95 | 1–3 (25%) | 1–1 | — | +0.93 | 2024 | 1650 | 109.2 | -1.40 | -2.00 | 0.788 | 45.2% | -57 | — | — | 28.6% | -1.14 | 0–1 | 0–2 | — | -0.26 |
| 32 | 2024 | 1637 | 127.6 | +0.43 | -3.44 | 0.894 | 48.6% | -34 | — | +160 | 43.1% | -0.40 | 2–5 (29%) | 9–6 (60%) | — | -0.76 | 2025 | 1619 | 106.1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 2025 | 1661 | 119.9 | +0.59 | -1.25 | 0.960 | 49.4% | -4 | — | +93 | 44.4% | -0.39 | 2–6 (25%) | 5–3 (63%) | — | +0.25 | 2026 | 1647 | 110.1 | +0.21 | +1.36 | 0.892 | 46.0% | — | — | — | 0.0% | -2.67 | — | 0–1 | — | -0.09 |
| 34 | 2026 | 1693 | 131.2 | -0.02 | -2.09 | 0.916 | 49.0% | +4 | -216 | -5 | 45.2% | -0.26 | 3–4 (43%) | 7–9 (44%) | — | +0.45 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1801 | 134.8 | -0.03 | -1.77 | 0.905 | 48.7% | +1 | -116 | +70 | 42.2% | -0.49 | 29–48 (38%) | 60–63 (49%) | 96.2 | +1.79 | — | 1784 | 124.2 | -0.76 | -1.14 | 0.908 | 48.4% | -88 | -2 | +125 | 43.8% | -0.33 | 8–8 (50%) | 10–16 (38%) | 99.7 | +0.39 |
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 |
|---|---|---|---|---|---|
| Adrian Mannarino | 2 | 3 | 5 | Jul 16, 2025 | H2H |
| Jannik Sinner | 1 | 3 | 4 | Jan 22, 2026 | H2H |
| Lorenzo Sonego | 1 | 2 | 3 | Aug 26, 2026 | H2H |
| Alex de Minaur | 0 | 3 | 3 | Aug 4, 2026 | H2H |
| Flavio Cobolli | 1 | 2 | 3 | Jul 2, 2026 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Frances Tiafoe | 0 | 4 | 4 | Jan 18, 2026 | H2H |
| Daniel Elahi Galan | 1 | 1 | 2 | Jan 16, 2024 | H2H |
| Aslan Karatsev | 2 | 0 | 2 | Jan 3, 2024 | H2H |
| Ugo Humbert | 1 | 1 | 2 | Jul 5, 2023 | H2H |
| Lorenzo Sonego | 2 | 0 | 2 | Mar 10, 2023 | H2H |