H2H data updated: 2026-09-13 00:00 UTC
Sesil Karatantcheva holds a 1–0 lead over Katie Obrien in their WTA head-to-head. Across 1 main-draw meeting, Sesil Karatantcheva leads 1–0 on grass. Most recently, Sesil Karatantcheva won the 2010 Birmingham round of 64 6-3 6-4.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Sesil Karatantcheva | 6-3 6-4 | Katie Obrien | Match data | Jun 9, 2010* | R64 | Birmingham | International → modern equivalent WTA 250 | Grass |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sesil Karatantcheva | #1,329 | #35 | 919 | 1,728 | 50 | 75 | 40.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Katie Obrien | #782 | #84 | 769 | 1,514 | 9 | 34 | 20.9% | 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.
| Sesil Karatantcheva | Katie Obrien | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 2004 | 7–5 | 58.3% | #133 | 1,564 | 0 | 0 | 2004 | 0–1 | 0.0% | #387 | 1,492 | 0 | 0 |
| 2005 | 17–14 | 54.8% | #39 | 1,703 | 0 | 0 | 2005 | 0–1 | 0.0% | #267 | 1,492 | 0 | 0 |
| 2008 | 1–1 | 50.0% | #148 | 1,692 | 0 | 0 | 2006 | 0–3 | 0.0% | #187 | 1,461 | 0 | 0 |
| 2009 | 2–6 | 25.0% | #132 | 1,605 | 0 | 0 | 2007 | 4–3 | 57.1% | #127 | 1,501 | 0 | 0 |
| 2010 | 7–8 | 46.7% | #140 | 1,623 | 0 | 0 | 2008 | 2–8 | 20.0% | #159 | 1,450 | 0 | 0 |
| 2011 | 0–1 | 0.0% | #139 | 1,616 | 0 | 0 | 2009 | 1–9 | 10.0% | #88 | 1,390 | 0 | 0 |
| 2012 | 4–12 | 25.0% | #110 | 1,537 | 0 | 0 | 2010 | 2–8 | 20.0% | #179 | 1,370 | 0 | 0 |
| 2013 | 3–9 | 25.0% | #141 | 1,519 | 0 | 0 | 2011 | 0–1 | 0.0% | #357 | 1,365 | 0 | 0 |
| 2014 | 2–3 | 40.0% | #178 | 1,520 | 0 | 0 | — | — | — | — | — | — | — |
| 2015 | 7–11 | 38.9% | #112 | 1,519 | 0 | 0 | — | — | — | — | — | — | — |
| 2016 | 0–2 | 0.0% | #211 | 1,533 | 0 | 0 | — | — | — | — | — | — | — |
| 2017 | 0–1 | 0.0% | #182 | 1,517 | 0 | 0 | — | — | — | — | — | — | — |
| 2018 | 0–2 | 0.0% | #229 | 1,481 | 0 | 0 | — | — | — | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. 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.
| Sesil Karatantcheva | Katie Obrien | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | ||||||||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | ||
| 2004 | 7 | 5 | 12 | 58.3% | — | — | — | — | — | — | — | — | — | — | — | — | 2004 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 2005 | 11 | 11 | 22 | 50.0% | 4 | 1 | 5 | 80.0% | 1 | 1 | 2 | 50.0% | 1 | 1 | 2 | 50.0% | 2005 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 2008 | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | 2006 | — | — | — | — | — | — | — | — | 0 | 3 | 3 | 0.0% | — | — | — | — |
| 2009 | 2 | 4 | 6 | 33.3% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | 2007 | 2 | 1 | 3 | 66.7% | — | — | — | — | 2 | 2 | 4 | 50.0% | — | — | — | — |
| 2010 | 4 | 4 | 8 | 50.0% | 0 | 3 | 3 | 0.0% | 3 | 1 | 4 | 75.0% | — | — | — | — | 2008 | 1 | 3 | 4 | 25.0% | 0 | 2 | 2 | 0.0% | 1 | 3 | 4 | 25.0% | — | — | — | — |
| 2011 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 2009 | 1 | 4 | 5 | 20.0% | 0 | 3 | 3 | 0.0% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 2012 | 2 | 8 | 10 | 20.0% | 1 | 3 | 4 | 25.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | 2010 | 1 | 4 | 5 | 20.0% | 1 | 2 | 3 | 33.3% | 0 | 2 | 2 | 0.0% | — | — | — | — |
| 2013 | 2 | 5 | 7 | 28.6% | 1 | 4 | 5 | 20.0% | — | — | — | — | — | — | — | — | 2011 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 2014 | 2 | 2 | 4 | 50.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2015 | 6 | 6 | 12 | 50.0% | 1 | 3 | 4 | 25.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2016 | — | — | — | — | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2017 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2018 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 36 | 47 | 83 | 43.4% | 8 | 21 | 29 | 27.6% | 5 | 6 | 11 | 45.5% | 1 | 1 | 2 | 50.0% | Career | 5 | 12 | 17 | 29.4% | 1 | 7 | 8 | 12.5% | 3 | 15 | 18 | 16.7% | — | — | — | — |
Rows are aligned in career order because complete birth data is unavailable. Detailed serve and return statistics available for 84/125 of Sesil Karatantcheva's and 31/42 of Katie Obrien'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.
| Sesil Karatantcheva | Katie Obrien | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% |
| 2004 | 1/12 | 2.0 | 3.0 | 46.8% | 45.5% | 40.0% | 37.5% | 0.0% | 42.6% | 26.2% | 2005 | 1/1 | 0.0 | 4.0 | 51.2% | 63.6% | 47.6% | 0.0% | — | 55.8% | 20.0% |
| 2005 | 10/31 | 1.5 | 4.7 | 60.6% | 56.4% | 37.3% | 37.0% | 41.2% | 48.4% | 42.5% | 2006 | 2/3 | 1.5 | 6.0 | 58.1% | 57.7% | 42.1% | 37.9% | 62.5% | 51.1% | 42.8% |
| 2008 | 2/2 | 1.5 | 3.0 | 63.8% | 62.4% | 50.7% | 58.9% | 52.1% | 58.9% | 46.9% | 2007 | 4/7 | 2.3 | 5.3 | 55.7% | 62.5% | 36.7% | 44.9% | 36.4% | 51.4% | 42.2% |
| 2009 | 7/8 | 1.1 | 3.6 | 67.5% | 49.8% | 38.9% | 40.1% | 52.5% | 46.1% | 43.0% | 2008 | 6/10 | 1.5 | 6.7 | 54.5% | 62.6% | 43.3% | 54.5% | 42.0% | 53.7% | 42.6% |
| 2010 | 15/15 | 1.4 | 3.8 | 67.8% | 57.8% | 43.1% | 52.5% | 44.7% | 52.9% | 44.5% | 2009 | 9/10 | 1.2 | 6.6 | 59.0% | 54.7% | 35.8% | 45.2% | 44.2% | 46.9% | 39.4% |
| 2011 | 1/1 | 0.0 | 3.0 | 63.3% | 50.0% | 40.9% | 0.0% | 50.0% | 46.7% | 43.1% | 2010 | 8/10 | 1.6 | 6.3 | 59.5% | 54.8% | 39.7% | 41.7% | 33.7% | 49.0% | 37.8% |
| 2012 | 14/16 | 1.4 | 7.1 | 64.9% | 58.2% | 41.0% | 49.1% | 49.2% | 52.2% | 50.6% | 2011 | 1/1 | 2.0 | 5.0 | 62.9% | 46.2% | 30.4% | 41.7% | 60.0% | 40.3% | 37.5% |
| 2013 | 9/12 | 1.2 | 9.1 | 54.1% | 59.2% | 33.8% | 50.4% | 49.6% | 47.3% | 43.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2014 | 4/5 | 2.8 | 7.0 | 59.4% | 60.9% | 48.0% | 51.9% | 33.1% | 55.6% | 43.1% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2015 | 16/18 | 1.7 | 6.3 | 69.1% | 59.4% | 42.2% | 44.4% | 57.1% | 55.1% | 40.5% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2016 | 2/2 | 0.5 | 8.0 | 56.7% | 58.1% | 31.6% | 45.1% | 46.4% | 46.7% | 45.6% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2017 | 1/1 | 1.0 | 3.0 | 61.7% | 48.3% | 22.2% | 14.3% | 50.0% | 38.3% | 38.1% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2018 | 2/2 | 0.5 | 7.0 | 56.5% | 51.6% | 31.8% | 40.2% | 100.0% | 42.2% | 27.6% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | 84/125 | 1.4 | 5.8 | 63.8% | 57.2% | 40.1% | 45.7% | 49.2% | 51.0% | 43.6% | Career | 31/43 | 1.5 | 6.2 | 57.6% | 57.5% | 39.0% | 44.0% | 40.3% | 49.7% | 39.5% |
Rows are aligned in career order because complete birth data is unavailable. 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.
| Sesil Karatantcheva | Katie Obrien | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| 2004 | 1565 | 113.8 | -1.46 | -1.14 | 0.456 | 34.8% | +15 | — | — | 58.6% | +0.17 | 2–3 (40%) | — | — | +0.35 | 2004 | 1492 | 98.4 | — | — | — | — | — | — | — | 0.0% | -2.00 | — | — | — | -0.06 |
| 2005 | 1703 | 132.7 | -2.96 | -0.17 | 0.824 | 45.4% | -35 | -71 | — | 50.7% | -0.42 | 8–3 (73%) | 3–3 (50%) | 106.7 | -0.62 | 2005 | 1492 | 103.3 | +4.63 | +2.47 | 0.453 | 37.5% | — | — | — | 0.0% | -3.50 | — | — | — | -0.29 |
| 2008 | 1693 | 108.3 | +0.98 | +0.45 | 1.142 | 52.4% | — | — | — | 60.0% | +0.60 | 0–1 | 0–1 | — | -0.06 | 2006 | 1462 | 94.0 | -0.38 | +0.43 | 0.876 | 47.0% | — | — | +15 | 25.0% | -1.50 | 0–2 | 0–1 | — | +0.02 |
| 2009 | 1606 | 97.6 | -3.63 | -1.61 | 0.797 | 44.9% | +4 | — | — | 30.0% | -1.50 | 2–2 (50%) | — | — | +0.11 | 2007 | 1502 | 98.4 | -1.08 | -1.93 | 0.868 | 46.8% | +35 | — | +18 | 53.3% | -0.33 | 1–0 | 1–0 | — | +0.89 |
| 2010 | 1624 | 115.1 | -1.13 | +0.73 | 0.945 | 48.6% | -5 | -67 | +51 | 44.1% | -0.47 | 3–1 (75%) | 1–2 (33%) | — | -0.47 | 2008 | 1451 | 98.3 | -1.41 | -1.77 | 0.920 | 48.4% | +67 | — | +20 | 30.8% | -1.19 | 2–4 (33%) | 3–0 (100%) | — | +0.44 |
| 2011 | 1617 | 102.8 | -0.42 | +1.48 | 0.807 | 44.7% | — | — | — | 0.0% | -3.00 | — | — | — | -0.35 | 2009 | 1391 | 89.7 | -5.01 | -2.96 | 0.742 | 43.3% | +96 | +66 | — | 21.7% | -2.04 | 0–3 (0%) | 0–1 | — | +0.39 |
| 2012 | 1538 | 120.4 | -2.60 | +3.93 | 1.059 | 51.3% | +2 | +1 | — | 38.5% | -0.51 | 0–7 (0%) | 0–1 | — | 0.00 | 2010 | 1371 | 97.5 | -2.84 | -3.79 | 0.741 | 43.8% | +103 | +65 | — | 29.2% | -1.67 | 1–3 (25%) | 1–0 | — | +0.42 |
| 2013 | 1520 | 122.0 | -2.96 | +1.39 | 0.822 | 45.5% | +2 | +5 | — | 30.8% | -1.19 | 0–2 | 0–2 | — | -0.98 | 2011 | 1366 | 99.1 | -2.49 | -4.08 | 0.628 | 39.1% | — | — | — | 0.0% | -4.00 | — | — | — | -0.01 |
| 2014 | 1520 | 100.7 | -1.01 | -0.55 | 0.970 | 48.8% | +13 | — | — | 38.5% | -1.00 | 2–1 (67%) | 1–0 | — | +0.15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2015 | 1520 | 112.6 | -2.56 | -0.62 | 0.903 | 48.1% | +51 | -21 | — | 41.0% | -1.08 | 1–2 (33%) | 2–0 | — | -0.21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2016 | 1533 | 112.6 | -1.59 | -0.25 | 0.855 | 46.1% | — | — | — | 20.0% | -2.20 | 0–1 | — | — | -0.01 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2017 | 1518 | 96.5 | -0.89 | +0.34 | 0.617 | 38.2% | — | — | — | 0.0% | -4.50 | — | — | — | +0.13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2018 | 1482 | 97.3 | -1.10 | -2.31 | 0.478 | 36.8% | — | — | — | 0.0% | -4.50 | — | — | — | +0.09 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2019 | 1442 | 100.2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2023 | 1411 | 95.3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1728 | 121.3 | -2.22 | +0.59 | 0.890 | 47.3% | 0 | -29 | +51 | 42.3% | -0.75 | 18–23 (44%) | 7–9 (44%) | 94.4 | -1.50 | Career | 1514 | 93.8 | -2.56 | -2.45 | 0.785 | 44.8% | +80 | +66 | +18 | 29.4% | -1.51 | 4–12 (25%) | 5–2 (71%) | 95.3 | +4.19 |
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 |
|---|---|---|---|---|---|
| Maria Sharapova | 0 | 5 | 5 | Aug 8, 2018 | H2H |
| Kiki Bertens | 2 | 1 | 3 | Feb 27, 2015 | H2H |
| Tamarine Tanasugarn | 1 | 2 | 3 | Jun 13, 2012 | H2H |
| Marie Bouzkova | 1 | 1 | 2 | Sep 13, 2018 | H2H |
| Francesca Schiavone | 0 | 2 | 2 | Jul 23, 2015 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Alla Kudryavtseva | 1 | 1 | 2 | Sep 17, 2009 | H2H |
| Monica Niculescu | 0 | 2 | 2 | Jul 16, 2009 | H2H |
| Olga Govortsova | 0 | 2 | 2 | May 26, 2009 | H2H |
| Kimiko Date | 0 | 1 | 1 | Jun 22, 2011 | H2H |
| Ekaterina Ivanova | 0 | 1 | 1 | Sep 23, 2010 | H2H |