H2H data updated: 2026-09-13 00:00 UTC
Compare the head-to-head record, career totals, season-by-season performance, and match log for Heather Watson vs Katherine Sebov.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Heather Watson | 6-0 6-3 | Katherine Sebov | Match data | Aug 7, 2021 | Q1 | Canadian Open | WTA 1000 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Heather Watson | #446 | #38 | 1,386 | 1,755 | 146 | 199 | 42.3% | 0 | 0 | 0 | 0 | 4 | 4 |
| Katherine Sebov | #214 | #136 | 520 | 1,620 | 4 | 9 | 30.8% | 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 | Heather Watson | Katherine Sebov | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 18 | 2010 | 1–5 | 16.7% | #176 | 1,472 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | 2011 | 10–11 | 47.6% | #92 | 1,536 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 2012 | 18–17 | 51.4% | #49 | 1,693 | 0 | 1 | — | — | — | — | — | — | — |
| 21 | 2013 | 9–16 | 36.0% | #121 | 1,549 | 0 | 1 | — | — | — | — | — | — | — |
| 22 | 2014 | 9–17 | 34.6% | #49 | 1,540 | 0 | 1 | 2021 | 0–1 | 0.0% | #347 | 1,453 | 0 | 0 |
| 23 | 2015 | 18–19 | 48.6% | #55 | 1,610 | 0 | 2 | 2022 | 1–2 | 33.3% | #221 | 1,518 | 0 | 0 |
| 24 | 2016 | 16–19 | 45.7% | #76 | 1,586 | 0 | 3 | 2023 | 2–3 | 40.0% | #145 | 1,597 | 0 | 0 |
| 25 | 2017 | 13–15 | 46.4% | #73 | 1,613 | 0 | 3 | — | — | — | — | — | — | — |
| 26 | 2018 | 10–17 | 37.0% | #91 | 1,574 | 0 | 3 | 2025 | 0–1 | 0.0% | #248 | 1,500 | 0 | 0 |
| 27 | 2019 | 5–9 | 35.7% | #103 | 1,624 | 0 | 3 | 2026 | 1–2 | 33.3% | #214 | 1,529 | 0 | 0 |
| 28 | 2020 | 9–8 | 52.9% | #58 | 1,663 | 0 | 4 | — | — | — | — | — | — | — |
| 29 | 2021 | 7–17 | 29.2% | #72 | 1,577 | 0 | 4 | — | — | — | — | — | — | — |
| 30 | 2022 | 9–12 | 42.9% | #139 | 1,568 | 0 | 4 | — | — | — | — | — | — | — |
| 31 | 2023 | 8–7 | 53.3% | #137 | 1,595 | 0 | 4 | — | — | — | — | — | — | — |
| 32 | 2024 | 3–6 | 33.3% | #162 | 1,569 | 0 | 4 | — | — | — | — | — | — | — |
| 33 | 2025 | 1–3 | 25.0% | #269 | 1,544 | 0 | 4 | — | — | — | — | — | — | — |
| 34 | 2026 | 0–1 | 0.0% | #446 | 1,595 | 0 | 4 | — | — | — | — | — | — | — |
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 | Heather Watson | Katherine Sebov | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 18 | 2010 | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | 1 | 3 | 4 | 25.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2011 | 7 | 6 | 13 | 53.8% | 1 | 2 | 3 | 33.3% | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2012 | 10 | 11 | 21 | 47.6% | 2 | 2 | 4 | 50.0% | 6 | 4 | 10 | 60.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2013 | 7 | 12 | 19 | 36.8% | 0 | 1 | 1 | 0.0% | 2 | 3 | 5 | 40.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2014 | 4 | 13 | 17 | 23.5% | 1 | 1 | 2 | 50.0% | 4 | 3 | 7 | 57.1% | 2021 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 23 | 2015 | 12 | 11 | 23 | 52.2% | 2 | 5 | 7 | 28.6% | 4 | 3 | 7 | 57.1% | 2022 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — |
| 24 | 2016 | 13 | 11 | 24 | 54.2% | 2 | 4 | 6 | 33.3% | 1 | 4 | 5 | 20.0% | 2023 | 1 | 2 | 3 | 33.3% | 1 | 1 | 2 | 50.0% | — | — | — | — |
| 25 | 2017 | 7 | 11 | 18 | 38.9% | — | — | — | — | 6 | 4 | 10 | 60.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2018 | 7 | 9 | 16 | 43.8% | 2 | 4 | 6 | 33.3% | 1 | 4 | 5 | 20.0% | 2025 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 27 | 2019 | 4 | 5 | 9 | 44.4% | — | — | — | — | 1 | 4 | 5 | 20.0% | 2026 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — |
| 28 | 2020 | 9 | 6 | 15 | 60.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2021 | 3 | 12 | 15 | 20.0% | 0 | 1 | 1 | 0.0% | 4 | 4 | 8 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 2022 | 4 | 6 | 10 | 40.0% | 1 | 3 | 4 | 25.0% | 4 | 3 | 7 | 57.1% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 2023 | 5 | 4 | 9 | 55.6% | — | — | — | — | 3 | 3 | 6 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 2024 | 2 | 3 | 5 | 40.0% | — | — | — | — | 1 | 3 | 4 | 25.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 2025 | — | — | — | — | 0 | 1 | 1 | 0.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 34 | 2026 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 94 | 122 | 216 | 43.5% | 11 | 27 | 38 | 28.9% | 41 | 50 | 91 | 45.1% | — | 3 | 7 | 10 | 30.0% | 1 | 2 | 3 | 33.3% | — | — | — | — |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 324/345 of Heather Watson's and 13/13 of Katherine Sebov'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 | Heather Watson | Katherine Sebov | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | |
| 18 | 2010 | 6/6 | 2.7 | 3.2 | 62.5% | 58.2% | 41.9% | 44.7% | 30.6% | 52.2% | 40.1% | — | —/— | — | — | — | — | — | — | — | — | — |
| 19 | 2011 | 21/21 | 3.2 | 2.8 | 65.7% | 63.2% | 45.6% | 56.1% | 47.7% | 57.3% | 44.0% | — | —/— | — | — | — | — | — | — | — | — | — |
| 20 | 2012 | 30/35 | 2.8 | 2.9 | 65.0% | 63.4% | 43.8% | 48.6% | 46.6% | 56.4% | 42.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| 21 | 2013 | 25/25 | 3.6 | 3.1 | 62.5% | 63.2% | 47.0% | 52.4% | 47.4% | 57.0% | 40.8% | — | —/— | — | — | — | — | — | — | — | — | — |
| 22 | 2014 | 24/26 | 2.9 | 3.4 | 59.3% | 60.0% | 42.1% | 43.9% | 51.4% | 52.0% | 40.8% | 2021 | 1/1 | 1.0 | 1.0 | 72.2% | 48.7% | 26.7% | 58.3% | 16.7% | 42.6% | 35.7% |
| 23 | 2015 | 31/37 | 3.5 | 3.5 | 58.9% | 64.6% | 48.5% | 54.7% | 52.9% | 58.0% | 42.4% | 2022 | 3/3 | 0.0 | 5.3 | 78.4% | 56.0% | 33.9% | 56.1% | 33.3% | 51.4% | 36.8% |
| 24 | 2016 | 33/35 | 4.2 | 3.8 | 58.5% | 65.2% | 46.2% | 57.8% | 51.6% | 57.3% | 45.0% | 2023 | 5/5 | 0.6 | 2.2 | 79.4% | 52.4% | 40.4% | 39.1% | 41.7% | 50.0% | 33.4% |
| 25 | 2017 | 27/28 | 3.5 | 4.9 | 58.6% | 66.8% | 45.4% | 61.4% | 49.9% | 57.8% | 43.0% | — | —/— | — | — | — | — | — | — | — | — | — |
| 26 | 2018 | 26/27 | 4.1 | 3.4 | 59.5% | 64.9% | 43.9% | 49.2% | 45.6% | 56.4% | 42.8% | 2025 | 1/1 | 0.0 | 1.0 | 62.5% | 25.0% | 16.7% | 33.3% | — | 21.9% | 19.4% |
| 27 | 2019 | 14/14 | 3.4 | 3.4 | 57.0% | 63.2% | 43.4% | 56.7% | 37.8% | 54.7% | 40.9% | 2026 | 3/3 | 0.0 | 4.0 | 69.5% | 53.9% | 41.3% | 42.3% | 50.0% | 50.1% | 39.3% |
| 28 | 2020 | 17/17 | 4.1 | 3.2 | 57.0% | 64.4% | 43.9% | 52.1% | 53.4% | 55.8% | 42.0% | — | —/— | — | — | — | — | — | — | — | — | — |
| 29 | 2021 | 23/24 | 5.4 | 4.1 | 56.3% | 67.6% | 41.7% | 58.4% | 46.4% | 56.4% | 37.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 30 | 2022 | 20/21 | 2.9 | 2.1 | 62.3% | 63.2% | 44.4% | 52.4% | 51.3% | 56.1% | 40.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 31 | 2023 | 15/15 | 3.2 | 3.5 | 59.7% | 65.9% | 42.0% | 44.9% | 38.1% | 56.2% | 42.5% | — | —/— | — | — | — | — | — | — | — | — | — |
| 32 | 2024 | 9/9 | 2.2 | 3.4 | 55.4% | 67.6% | 44.0% | 50.8% | 52.4% | 56.8% | 39.0% | — | —/— | — | — | — | — | — | — | — | — | — |
| 33 | 2025 | 2/4 | 2.5 | 2.5 | 51.4% | 65.4% | 41.1% | 35.0% | 39.6% | 53.7% | 43.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 34 | 2026 | 1/1 | 0.0 | 4.0 | 48.5% | 68.8% | 23.5% | 57.1% | 33.3% | 45.5% | 37.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 324/345 | 3.5 | 3.4 | 60.0% | 64.3% | 44.6% | 52.9% | 48.0% | 56.3% | 41.9% | — | 13/13 | 0.3 | 3.2 | 75.0% | 51.2% | 36.2% | 44.8% | 36.5% | 47.6% | 34.6% |
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 | Heather Watson | Katherine Sebov | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 18 | 2010 | 1473 | 98.6 | -0.96 | -1.56 | 0.838 | 46.2% | — | — | +99 | 23.1% | -1.38 | 0–1 | 0–1 | — | +0.18 | 2017 | 1499 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2011 | 1537 | 115.9 | +1.02 | -0.72 | 1.031 | 51.0% | +26 | -23 | +9 | 51.1% | +0.30 | 1–4 (20%) | 2–3 (40%) | 96.5 | +1.09 | 2018 | 1511 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2012 | 1693 | 127.7 | +0.47 | +0.10 | 0.984 | 49.6% | -34 | -139 | -55 | 51.3% | -0.23 | 5–5 (50%) | 8–6 (57%) | 103.8 | -0.84 | 2019 | 1497 | 99.8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2013 | 1550 | 109.0 | +0.35 | -2.61 | 0.948 | 49.1% | -5 | — | +30 | 38.3% | -0.70 | 5–9 (36%) | 3–2 (60%) | 94.6 | +0.15 | 2020 | 1460 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2014 | 1540 | 121.1 | -2.65 | -1.65 | 0.851 | 46.8% | -40 | — | +96 | 36.1% | -0.87 | 5–6 (45%) | 1–3 (25%) | — | -0.39 | 2021 | 1454 | 97.6 | -0.78 | -1.54 | 0.622 | 39.1% | — | — | — | 0.0% | -4.50 | — | — | — | -0.11 |
| 23 | 2015 | 1610 | 129.5 | -0.01 | +1.12 | 1.008 | 50.4% | -15 | -87 | +77 | 50.6% | +0.13 | 6–9 (40%) | 2–7 (22%) | 96.0 | -0.01 | 2022 | 1518 | 106.3 | -1.51 | -1.66 | 0.757 | 44.7% | +30 | — | — | 37.5% | -1.12 | 1–1 | — | — | +0.02 |
| 24 | 2016 | 1586 | 126.9 | +0.96 | +0.88 | 1.053 | 51.0% | +27 | -56 | +28 | 48.2% | +0.12 | 8–9 (47%) | 4–4 (50%) | 99.3 | -0.97 | 2023 | 1598 | 113.4 | -2.12 | -1.26 | 0.668 | 42.4% | -6 | — | — | 33.3% | -1.25 | 2–0 | — | — | -0.57 |
| 25 | 2017 | 1614 | 124.1 | +1.17 | -0.04 | 1.019 | 50.6% | -57 | — | +98 | 49.2% | +0.29 | 5–6 (45%) | 2–7 (22%) | 95.1 | -1.23 | 2024 | 1524 | 99.0 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2018 | 1574 | 120.5 | -0.38 | -0.79 | 0.981 | 49.7% | +4 | -55 | +92 | 41.9% | -0.42 | 2–6 (25%) | 2–5 (29%) | 93.2 | +0.66 | 2025 | 1501 | 100.3 | -1.18 | -5.18 | 0.248 | 20.6% | — | — | — | 0.0% | -6.00 | — | — | — | -0.04 |
| 27 | 2019 | 1625 | 117.3 | -0.69 | -1.28 | 0.902 | 47.8% | 0 | — | -17 | 38.7% | -0.68 | 1–2 (33%) | 3–2 (60%) | 100.8 | -0.18 | 2026 | 1530 | 112.0 | -0.99 | -0.75 | 0.788 | 45.6% | +32 | — | — | 33.3% | -1.33 | — | 0–2 | — | +0.13 |
| 28 | 2020 | 1664 | 126.5 | -0.35 | +0.15 | 0.950 | 49.1% | +30 | — | — | 51.2% | -0.10 | 6–3 (67%) | 3–5 (38%) | 101.7 | -0.02 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2021 | 1578 | 117.2 | -0.31 | -3.41 | 0.854 | 47.3% | +6 | — | +45 | 33.3% | -0.80 | 4–6 (40%) | 6–6 (50%) | 99.6 | +0.11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 2022 | 1568 | 107.0 | -0.88 | -1.99 | 0.920 | 48.4% | +3 | -155 | +83 | 39.6% | -0.54 | 5–1 (83%) | 3–7 (30%) | 101.5 | +1.46 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 2023 | 1596 | 115.3 | -0.40 | -1.06 | 0.971 | 49.4% | -14 | — | +129 | 50.0% | -0.09 | 3–1 (75%) | 4–0 (100%) | 105.8 | +0.33 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 32 | 2024 | 1569 | 118.9 | -0.40 | -1.74 | 0.904 | 47.8% | +24 | — | +120 | 35.0% | -0.65 | 1–1 | 0–1 | — | +0.23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 33 | 2025 | 1544 | 104.7 | -1.18 | +1.77 | 0.937 | 48.3% | — | — | +113 | 33.3% | -0.55 | 0–1 | 0–1 | — | -0.02 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 34 | 2026 | 1595 | 109.3 | -0.18 | -2.54 | 0.695 | 41.9% | — | — | — | 0.0% | -4.00 | — | — | — | +0.06 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1755 | 124.6 | -0.08 | -0.77 | 0.959 | 49.3% | -6 | -84 | +58 | 44.2% | -0.28 | 57–70 (45%) | 43–60 (42%) | 92.9 | +0.18 | — | 1621 | 110.3 | -1.54 | -1.56 | 0.661 | 41.7% | +19 | — | — | 30.0% | -1.76 | 3–1 (75%) | 0–2 | — | -4.38 |
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 |
|---|---|---|---|---|---|
| Sloane Stephens | 3 | 4 | 7 | Mar 3, 2023 | H2H |
| Yanina Wickmayer | 2 | 4 | 6 | Jul 29, 2023 | H2H |
| Victoria Azarenka | 0 | 6 | 6 | Mar 9, 2018 | H2H |
| Sorana Cirstea | 3 | 2 | 5 | Sep 16, 2021 | H2H |
| Anett Kontaveit | 1 | 4 | 5 | Feb 11, 2021 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Marta Kostyuk | 0 | 2 | 2 | Aug 4, 2026 | H2H |
| Aoi Ito | 1 | 0 | 1 | Aug 2, 2026 | H2H |
| Elvina Kalieva | 0 | 1 | 1 | Jul 28, 2026 | H2H |
| Katie Volynets | 0 | 1 | 1 | Mar 31, 2025 | H2H |
| Belinda Bencic | 0 | 1 | 1 | Apr 6, 2023 | H2H |