H2H data updated: 2026-09-13 00:00 UTC
Alla Kudryavtseva and Katie Obrien are tied 1–1 in their WTA head-to-head. Across 2 main-draw meetings, Katie Obrien leads 1–0 on grass, while Alla Kudryavtseva leads 1–0 on hard courts. Most recently, Alla Kudryavtseva won the 2009 Quebec City round of 32 6-1 6-4.
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 |
|---|---|---|---|---|---|---|---|---|
| Alla Kudryavtseva | 6-1 6-4 | Katie Obrien | Match data | Sep 17, 2009* | R32 | Quebec City | International → modern equivalent WTA 250 | Hard |
| Katie Obrien | 6-0 3-6 7-6(2) | Alla Kudryavtseva | Match data | Jun 11, 2008* | R64 | Birmingham | Tier III → 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alla Kudryavtseva | #841 | #56 | 1,056 | 1,671 | 85 | 139 | 37.9% | 0 | 0 | 0 | 0 | 1 | 1 |
| 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.
| Alla Kudryavtseva | Katie Obrien | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 2005 | 0–1 | 0.0% | #220 | 1,485 | 0 | 0 | 2004 | 0–1 | 0.0% | #387 | 1,492 | 0 | 0 |
| 2006 | 4–4 | 50.0% | #134 | 1,504 | 0 | 0 | 2005 | 0–1 | 0.0% | #267 | 1,492 | 0 | 0 |
| 2007 | 7–14 | 33.3% | #77 | 1,478 | 0 | 0 | 2006 | 0–3 | 0.0% | #187 | 1,461 | 0 | 0 |
| 2008 | 12–18 | 40.0% | #71 | 1,554 | 0 | 0 | 2007 | 4–3 | 57.1% | #127 | 1,501 | 0 | 0 |
| 2009 | 12–21 | 36.4% | #89 | 1,568 | 0 | 0 | 2008 | 2–8 | 20.0% | #159 | 1,450 | 0 | 0 |
| 2010 | 18–21 | 46.2% | #60 | 1,632 | 0 | 1 | 2009 | 1–9 | 10.0% | #88 | 1,390 | 0 | 0 |
| 2011 | 15–23 | 39.5% | #103 | 1,570 | 0 | 1 | 2010 | 2–8 | 20.0% | #179 | 1,370 | 0 | 0 |
| 2012 | 2–6 | 25.0% | #212 | 1,509 | 0 | 1 | 2011 | 0–1 | 0.0% | #357 | 1,365 | 0 | 0 |
| 2013 | 3–4 | 42.9% | #170 | 1,505 | 0 | 1 | — | — | — | — | — | — | — |
| 2014 | 5–13 | 27.8% | #98 | 1,487 | 0 | 1 | — | — | — | — | — | — | — |
| 2015 | 2–8 | 20.0% | #175 | 1,451 | 0 | 1 | — | — | — | — | — | — | — |
| 2016 | 5–4 | 55.6% | #142 | 1,612 | 0 | 1 | — | — | — | — | — | — | — |
| 2017 | 0–2 | 0.0% | #356 | 1,532 | 0 | 1 | — | — | — | — | — | — | — |
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.
| Alla Kudryavtseva | Katie Obrien | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | ||
| 2005 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 2004 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2006 | 4 | 4 | 8 | 50.0% | — | — | — | — | — | — | — | — | 2005 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2007 | 3 | 10 | 13 | 23.1% | 4 | 3 | 7 | 57.1% | 0 | 1 | 1 | 0.0% | 2006 | — | — | — | — | — | — | — | — | 0 | 3 | 3 | 0.0% |
| 2008 | 9 | 12 | 21 | 42.9% | 0 | 3 | 3 | 0.0% | 3 | 3 | 6 | 50.0% | 2007 | 2 | 1 | 3 | 66.7% | — | — | — | — | 2 | 2 | 4 | 50.0% |
| 2009 | 5 | 12 | 17 | 29.4% | 6 | 7 | 13 | 46.2% | 1 | 2 | 3 | 33.3% | 2008 | 1 | 3 | 4 | 25.0% | 0 | 2 | 2 | 0.0% | 1 | 3 | 4 | 25.0% |
| 2010 | 13 | 13 | 26 | 50.0% | 1 | 5 | 6 | 16.7% | 4 | 3 | 7 | 57.1% | 2009 | 1 | 4 | 5 | 20.0% | 0 | 3 | 3 | 0.0% | 0 | 2 | 2 | 0.0% |
| 2011 | 10 | 13 | 23 | 43.5% | 3 | 7 | 10 | 30.0% | 2 | 3 | 5 | 40.0% | 2010 | 1 | 4 | 5 | 20.0% | 1 | 2 | 3 | 33.3% | 0 | 2 | 2 | 0.0% |
| 2012 | 2 | 4 | 6 | 33.3% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | 2011 | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2013 | 1 | 2 | 3 | 33.3% | 0 | 1 | 1 | 0.0% | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2014 | 4 | 8 | 12 | 33.3% | 1 | 4 | 5 | 20.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2015 | 2 | 7 | 9 | 22.2% | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2016 | 3 | 3 | 6 | 50.0% | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2017 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 56 | 91 | 147 | 38.1% | 17 | 32 | 49 | 34.7% | 12 | 16 | 28 | 42.9% | 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 181/215 of Alla Kudryavtseva'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.
| Alla Kudryavtseva | 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% |
| 2007 | 10/21 | 1.4 | 3.7 | 57.6% | 55.8% | 44.9% | 48.6% | 46.3% | 51.3% | 43.1% | 2005 | 1/1 | 0.0 | 4.0 | 51.2% | 63.6% | 47.6% | 0.0% | — | 55.8% | 20.0% |
| 2008 | 26/30 | 1.8 | 3.0 | 61.1% | 59.3% | 43.9% | 51.7% | 45.8% | 53.5% | 46.2% | 2006 | 2/3 | 1.5 | 6.0 | 58.1% | 57.7% | 42.1% | 37.9% | 62.5% | 51.1% | 42.8% |
| 2009 | 29/33 | 1.6 | 3.4 | 60.8% | 54.9% | 44.6% | 47.5% | 51.3% | 51.5% | 42.0% | 2007 | 4/7 | 2.3 | 5.3 | 55.7% | 62.5% | 36.7% | 44.9% | 36.4% | 51.4% | 42.2% |
| 2010 | 36/39 | 2.1 | 2.6 | 58.7% | 60.6% | 44.4% | 50.8% | 44.2% | 53.9% | 44.1% | 2008 | 6/10 | 1.5 | 6.7 | 54.5% | 62.6% | 43.3% | 54.5% | 42.0% | 53.7% | 42.6% |
| 2011 | 36/38 | 2.4 | 3.8 | 56.1% | 60.1% | 41.0% | 49.8% | 46.9% | 51.9% | 41.1% | 2009 | 9/10 | 1.2 | 6.6 | 59.0% | 54.7% | 35.8% | 45.2% | 44.2% | 46.9% | 39.4% |
| 2012 | 7/8 | 1.9 | 2.6 | 56.1% | 61.9% | 46.3% | 43.9% | 53.4% | 54.0% | 44.3% | 2010 | 8/10 | 1.6 | 6.3 | 59.5% | 54.8% | 39.7% | 41.7% | 33.7% | 49.0% | 37.8% |
| 2013 | 5/7 | 3.4 | 1.8 | 58.3% | 66.5% | 42.3% | 48.0% | 76.8% | 56.3% | 45.2% | 2011 | 1/1 | 2.0 | 5.0 | 62.9% | 46.2% | 30.4% | 41.7% | 60.0% | 40.3% | 37.5% |
| 2014 | 15/18 | 2.1 | 4.4 | 62.8% | 59.3% | 41.1% | 42.1% | 43.2% | 52.4% | 41.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2015 | 7/10 | 1.3 | 4.4 | 70.0% | 56.4% | 40.5% | 42.7% | 44.8% | 51.8% | 38.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2016 | 8/9 | 2.5 | 5.3 | 59.5% | 61.1% | 38.0% | 47.1% | 52.2% | 51.7% | 46.8% | — | —/— | — | — | — | — | — | — | — | — | — |
| 2017 | 2/2 | 2.5 | 6.0 | 59.6% | 55.1% | 44.2% | 42.3% | 51.7% | 50.8% | 42.6% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | 181/224 | 2.0 | 3.4 | 59.5% | 59.1% | 43.0% | 48.4% | 47.8% | 52.7% | 43.1% | 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.
| Alla Kudryavtseva | 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 |
| 2005 | 1485 | 95.1 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | — | +0.06 | 2004 | 1492 | 98.4 | — | — | — | — | — | — | — | 0.0% | -2.00 | — | — | — | -0.06 |
| 2006 | 1505 | 102.4 | — | — | — | — | +15 | — | — | 47.4% | -0.47 | 2–1 (67%) | — | — | +0.58 | 2005 | 1492 | 103.3 | +4.63 | +2.47 | 0.453 | 37.5% | — | — | — | 0.0% | -3.50 | — | — | — | -0.29 |
| 2007 | 1479 | 112.3 | -2.11 | -0.89 | 0.886 | 47.4% | -26 | +109 | — | 37.0% | -0.93 | 3–3 (50%) | — | — | +0.19 | 2006 | 1462 | 94.0 | -0.38 | +0.43 | 0.876 | 47.0% | — | — | +15 | 25.0% | -1.50 | 0–2 | 0–1 | — | +0.02 |
| 2008 | 1554 | 118.9 | -1.27 | +1.61 | 0.994 | 49.9% | -27 | -25 | +89 | 45.2% | -0.26 | 6–9 (40%) | 2–6 (25%) | 96.9 | +0.18 | 2007 | 1502 | 98.4 | -1.08 | -1.93 | 0.868 | 46.8% | +35 | — | +18 | 53.3% | -0.33 | 1–0 | 1–0 | — | +0.89 |
| 2009 | 1568 | 115.1 | -3.32 | -1.08 | 0.866 | 46.9% | -53 | +10 | +66 | 37.8% | -0.91 | 4–4 (50%) | 4–4 (50%) | 101.0 | -0.37 | 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 |
| 2010 | 1632 | 116.0 | -1.58 | -0.03 | 0.956 | 49.0% | -24 | -115 | +21 | 46.0% | -0.49 | 5–6 (45%) | 2–2 (50%) | 100.2 | +0.56 | 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 |
| 2011 | 1570 | 105.8 | -3.04 | -3.05 | 0.854 | 46.5% | +20 | -106 | +52 | 38.5% | -1.21 | 6–2 (75%) | 6–4 (60%) | 107.3 | +0.40 | 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 |
| 2012 | 1510 | 99.2 | -2.09 | -0.77 | 0.964 | 48.9% | +37 | — | — | 33.3% | -0.89 | 0–2 | — | — | +0.59 | 2011 | 1366 | 99.1 | -2.49 | -4.08 | 0.628 | 39.1% | — | — | — | 0.0% | -4.00 | — | — | — | -0.01 |
| 2013 | 1505 | 109.2 | -0.85 | +0.31 | 1.036 | 50.2% | +31 | — | +117 | 57.1% | 0.00 | 0–2 | 1–0 | — | +0.48 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2014 | 1487 | 114.2 | -2.38 | -0.41 | 0.877 | 47.1% | +43 | -62 | — | 36.4% | -1.18 | 2–6 (25%) | 1–2 (33%) | 95.6 | -0.09 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2015 | 1451 | 103.7 | -3.22 | -0.55 | 0.802 | 45.0% | +28 | — | — | 19.0% | -1.81 | 1–0 | 0–4 (0%) | — | +0.03 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2016 | 1612 | 115.7 | -2.01 | +1.48 | 0.969 | 49.2% | -29 | -124 | — | 47.6% | -0.71 | 3–0 (100%) | 2–1 (67%) | — | -0.43 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2017 | 1533 | 98.9 | -3.36 | -1.56 | 0.865 | 46.9% | — | — | — | 20.0% | -1.40 | 0–1 | — | — | +0.06 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2018 | 1509 | 94.3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | 1671 | 114.0 | -2.30 | -0.63 | 0.911 | 47.9% | -7 | -34 | +62 | 40.2% | -0.82 | 32–36 (47%) | 18–23 (44%) | 99.9 | +1.00 | 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 |
|---|---|---|---|---|---|
| Angelique Kerber | 0 | 5 | 5 | Aug 28, 2014 | H2H |
| Sorana Cirstea | 2 | 2 | 4 | Feb 12, 2014 | H2H |
| Anastasia Rodionova | 4 | 0 | 4 | Aug 31, 2011 | H2H |
| Anabel Medina Garrigues | 0 | 4 | 4 | Jan 14, 2010 | H2H |
| Svetlana Kuznetsova | 0 | 3 | 3 | Jul 28, 2016 | 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 |