H2H data updated: 2026-09-13 00:00 UTC

Sorana Cirstea vs Klara Koukalova H2H: 0-1

Klara Koukalova holds a 1–0 lead over Sorana Cirstea in their WTA head-to-head. Across 1 main-draw meeting, Klara Koukalova leads 1–0 on hard courts. Most recently, Klara Koukalova won the 2010 Copenhagen quarterfinal 6-1 7-5.

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Sorana Cirstea
Romania Age 36 Right-Handed 176 cm / 5'9"
H2H
0 – 1
1 main-draw meetings
Klara Koukalova
CZE Age 44 Right-Handed 166 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Klara Koukalova #51 6-1 7-5 Sorana Cirstea #63 Match data Aug 7, 2010* QF Copenhagen International → modern equivalent WTA 250 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.

Career Comparison

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
Sorana Cirstea #17 #17 2,535 2,023 375 350 51.7% 0 0 0 0 4 4
Klara Koukalova #566 #20 1,860 1,803 275 288 48.8% 0 0 0 0 3 3

Career Progression by Age

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 Sorana Cirstea Klara Koukalova
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 2006 0–1 0.0% #353 1,484 0 0 — — — — — — —
17 2007 8–6 57.1% #108 1,558 0 0 — — — — — — —
18 2008 25–17 59.5% #36 1,746 0 1 — — — — — — —
19 2009 21–24 46.7% #45 1,691 0 1 2001 5–4 55.6% #139 1,519 0 0
20 2010 13–23 36.1% #93 1,573 0 1 2002 4–5 44.4% #117 1,527 0 0
21 2011 13–16 44.8% #60 1,600 0 1 2003 14–19 42.4% #63 1,537 0 0
22 2012 30–27 52.6% #27 1,683 0 1 2004 26–23 53.1% #46 1,611 0 0
23 2013 33–26 55.9% #22 1,705 0 1 2005 32–19 62.7% #35 1,764 0 2
24 2014 12–21 36.4% #94 1,590 0 1 2006 10–22 31.2% #117 1,546 0 2
25 2015 1–4 20.0% #242 1,537 0 1 2007 12–12 50.0% #63 1,578 0 2
26 2016 10–12 45.5% #79 1,610 0 1 2008 21–22 48.8% #72 1,574 0 2
27 2017 27–21 56.2% #37 1,716 0 1 2009 8–17 32.0% #90 1,533 0 2
28 2018 13–21 38.2% #84 1,612 0 1 2010 20–20 50.0% #41 1,656 0 2
29 2019 19–15 55.9% #74 1,636 0 1 2011 29–25 53.7% #41 1,713 0 2
30 2020 4–8 33.3% #71 1,658 0 1 2012 24–22 52.2% #28 1,721 0 2
31 2021 25–18 58.1% #39 1,746 0 2 2013 27–25 51.9% #35 1,675 0 2
32 2022 22–20 52.4% #45 1,693 0 2 2014 29–27 51.8% #40 1,611 0 3
33 2023 24–21 53.3% #26 1,825 0 2 2015 14–22 38.9% #99 1,549 0 3
34 2024 12–16 42.9% #69 1,753 0 2 2016 0–4 0.0% #400 1,486 0 3
35 2025 28–18 60.9% #43 1,869 0 3 — — — — — — —
36 2026 35–15 70.0% #17 1,987 0 4 — — — — — — —

Surface Results by Age

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 Sorana Cirstea Klara Koukalova
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
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 %
16 2006 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
17 2007 3 3 6 50.0% 5 3 8 62.5% — — — — — — — — — — — — — — — — — — — — — — — — —
18 2008 11 6 17 64.7% 10 8 18 55.6% 4 3 7 57.1% — — — — — — — — — — — — — — — — — — — — —
19 2009 8 14 22 36.4% 10 7 17 58.8% 3 2 5 60.0% 0 1 1 0.0% 2001 — — — — 5 3 8 62.5% — — — — 0 1 1 0.0%
20 2010 7 12 19 36.8% 5 8 13 38.5% 1 2 3 33.3% 0 1 1 0.0% 2002 0 2 2 0.0% 4 3 7 57.1% — — — — — — — —
21 2011 7 9 16 43.8% 5 5 10 50.0% 1 2 3 33.3% — — — — 2003 3 6 9 33.3% 11 11 22 50.0% 0 1 1 0.0% 0 1 1 0.0%
22 2012 22 18 40 55.0% 6 5 11 54.5% 2 4 6 33.3% — — — — 2004 8 12 20 40.0% 13 9 22 59.1% 5 2 7 71.4% — — — —
23 2013 24 17 41 58.5% 6 6 12 50.0% 3 3 6 50.0% — — — — 2005 16 11 27 59.3% 11 6 17 64.7% 5 1 6 83.3% 0 1 1 0.0%
24 2014 10 15 25 40.0% 2 5 7 28.6% 0 1 1 0.0% — — — — 2006 4 11 15 26.7% 4 7 11 36.4% 1 3 4 25.0% 1 1 2 50.0%
25 2015 0 2 2 0.0% 1 2 3 33.3% — — — — — — — — 2007 5 7 12 41.7% 7 5 12 58.3% — — — — — — — —
26 2016 1 4 5 20.0% 7 6 13 53.8% 2 2 4 50.0% — — — — 2008 6 9 15 40.0% 15 10 25 60.0% 0 2 2 0.0% 0 1 1 0.0%
27 2017 15 14 29 51.7% 9 5 14 64.3% 3 2 5 60.0% — — — — 2009 1 7 8 12.5% 7 9 16 43.8% 0 1 1 0.0% — — — —
28 2018 7 12 19 36.8% 5 6 11 45.5% 1 3 4 25.0% — — — — 2010 12 11 23 52.2% 5 8 13 38.5% 3 1 4 75.0% — — — —
29 2019 11 7 18 61.1% 8 7 15 53.3% 0 1 1 0.0% — — — — 2011 16 15 31 51.6% 10 7 17 58.8% 2 2 4 50.0% 1 1 2 50.0%
30 2020 4 6 10 40.0% 0 2 2 0.0% — — — — — — — — 2012 8 12 20 40.0% 8 6 14 57.1% 5 3 8 62.5% 3 1 4 75.0%
31 2021 11 12 23 47.8% 12 3 15 80.0% 2 3 5 40.0% — — — — 2013 17 16 33 51.5% 7 6 13 53.8% 2 2 4 50.0% 1 1 2 50.0%
32 2022 14 12 26 53.8% 4 5 9 44.4% 4 3 7 57.1% — — — — 2014 18 17 35 51.4% 4 6 10 40.0% 6 3 9 66.7% 1 1 2 50.0%
33 2023 19 14 33 57.6% 2 4 6 33.3% 3 3 6 50.0% — — — — 2015 5 14 19 26.3% 6 5 11 54.5% 3 3 6 50.0% — — — —
34 2024 9 8 17 52.9% 3 5 8 37.5% 0 3 3 0.0% — — — — 2016 0 4 4 0.0% — — — — — — — — — — — —
35 2025 24 14 38 63.2% 4 3 7 57.1% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
36 2026 20 8 28 71.4% 12 5 17 70.6% 3 2 5 60.0% — — — — — — — — — — — — — — — — — — — — —
Career — 227 208 435 52.2% 116 100 216 53.7% 32 40 72 44.4% 0 2 2 0.0% — 119 154 273 43.6% 117 101 218 53.7% 32 24 56 57.1% 7 9 16 43.8%

Performance Progression by Age

Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 663/726 of Sorana Cirstea's and 66/96 of Klara Koukalova'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 Sorana Cirstea Klara Koukalova
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 2007 6/14 1.3 4.8 43.6% 62.9% 41.8% 58.2% 42.9% 50.9% 42.7% — —/— — — — — — — — — —
18 2008 32/42 2.8 2.6 55.0% 61.7% 43.3% 53.3% 47.7% 53.3% 41.2% — —/— — — — — — — — — —
19 2009 43/45 2.9 2.6 55.6% 63.7% 43.5% 48.6% 48.6% 54.6% 42.3% — —/— — — — — — — — — —
20 2010 33/36 2.5 2.8 55.3% 61.2% 39.5% 47.5% 50.4% 51.2% 40.9% — —/— — — — — — — — — —
21 2011 23/29 1.6 2.9 53.9% 62.8% 43.7% 48.1% 49.7% 53.9% 43.3% — —/— — — — — — — — — —
22 2012 51/57 3.5 3.5 53.5% 65.2% 44.8% 56.7% 45.4% 55.5% 42.3% — —/— — — — — — — — — —
23 2013 56/59 2.4 3.6 55.2% 64.9% 43.5% 49.6% 49.8% 55.3% 43.8% — —/— — — — — — — — — —
24 2014 30/33 2.3 4.3 56.8% 62.7% 43.5% 49.7% 46.8% 54.3% 41.6% — —/— — — — — — — — — —
25 2015 5/5 1.2 4.0 62.9% 62.0% 42.3% 37.5% 43.9% 54.7% 39.8% — —/— — — — — — — — — —
26 2016 22/22 1.7 2.5 58.2% 60.1% 46.4% 44.0% 50.6% 54.7% 44.9% — —/— — — — — — — — — —
27 2017 47/48 2.4 2.7 57.6% 64.8% 45.8% 51.2% 45.7% 56.8% 44.5% — —/— — — — — — — — — —
28 2018 33/34 2.6 3.2 57.5% 60.5% 41.9% 51.3% 47.2% 52.7% 43.4% — —/— — — — — — — — — —
29 2019 34/34 2.3 2.5 60.7% 63.2% 46.6% 51.9% 47.1% 56.6% 45.4% — —/— — — — — — — — — —
30 2020 12/12 2.6 2.8 63.6% 59.1% 46.9% 55.1% 50.5% 54.6% 39.8% — —/— — — — — — — — — —
31 2021 42/43 2.0 2.3 62.3% 64.1% 48.7% 49.7% 48.6% 58.2% 44.3% — —/— — — — — — — — — —
32 2022 42/42 2.3 2.8 61.1% 63.2% 48.2% 51.4% 53.5% 57.1% 44.3% 2014 31/56 1.8 5.0 55.4% 61.0% 41.7% 47.6% 48.1% 51.9% 43.5%
33 2023 45/45 2.7 2.5 61.6% 65.3% 46.7% 54.1% 48.3% 58.2% 42.9% 2015 31/36 0.7 5.5 55.6% 60.9% 46.7% 43.3% 48.1% 54.4% 42.6%
34 2024 28/28 3.5 2.0 61.9% 62.1% 44.7% 52.4% 38.4% 55.6% 42.4% 2016 4/4 0.3 7.3 56.6% 57.9% 44.2% 56.5% 65.5% 52.2% 36.5%
35 2025 35/46 3.9 2.3 58.1% 68.3% 50.1% 50.6% 51.6% 60.7% 45.4% — —/— — — — — — — — — —
36 2026 44/52 4.3 2.1 60.5% 68.3% 50.0% 54.7% 48.8% 60.8% 45.7% — —/— — — — — — — — — —
Career — 663/727 2.7 2.8 57.9% 63.9% 45.4% 51.3% 48.2% 56.0% 43.4% — 66/563 1.2 5.4 55.5% 60.8% 44.2% 46.1% 49.2% 53.1% 42.7%

Advanced Statistics Comparison by Age

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 Sorana Cirstea Klara Koukalova
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
16 2006 1485 96.4 — — — — — — — 0.0% -3.50 — — — +0.08 — — — — — — — — — — — — — — — —
17 2007 1559 110.3 -2.17 -1.15 0.870 47.0% -23 +35 — 48.6% -0.51 6–1 (86%) 3–1 (75%) 108.4 +0.13 — — — — — — — — — — — — — — — —
18 2008 1747 118.7 -1.30 -2.34 0.883 47.5% -43 -123 -113 52.1% -0.26 11–3 (79%) 6–3 (67%) 111.4 -0.22 — — — — — — — — — — — — — — — —
19 2009 1692 126.4 -0.45 -1.30 0.932 48.6% -58 +12 -23 45.5% -0.49 9–6 (60%) 4–5 (44%) 103.2 -0.37 2001 1520 104.0 — — — — — +55 — 47.8% +0.26 4–1 (80%) 0–1 — +1.03
20 2010 1574 113.5 -3.49 -2.02 0.837 46.2% +11 +38 +74 36.3% -1.09 6–3 (67%) 4–5 (44%) 104.2 -0.31 2002 1527 105.4 — — — — — +71 — 50.0% -0.42 2–4 (33%) 1–0 — +0.68
21 2011 1600 118.3 -2.47 -0.83 0.941 48.7% +2 +23 +5 47.8% -0.27 3–6 (33%) 2–2 (50%) 97.3 +0.04 2003 1537 119.8 — — — — -60 +108 — 44.4% -0.35 7–8 (47%) 1–3 (25%) 99.1 +0.56
22 2012 1684 132.4 +0.53 -0.83 0.951 49.1% -3 +6 -81 51.1% -0.17 11–12 (48%) 8–7 (53%) 99.8 -1.71 2004 1612 117.6 — — — — -110 +85 +30 49.5% -0.07 8–7 (53%) 6–4 (60%) 103.5 +0.67
23 2013 1706 135.7 -0.27 +0.48 0.981 49.7% +29 -15 -114 51.2% +0.02 13–4 (76%) 6–5 (55%) 110.2 +2.12 2005 1764 126.4 — — — — -90 +7 -18 55.5% +0.09 15–4 (79%) 9–2 (82%) 118.0 +1.13
24 2014 1590 119.4 -1.32 -1.34 0.911 48.0% +28 +55 — 41.0% -0.56 4–8 (33%) 1–7 (13%) 91.5 +1.31 2006 1547 107.1 — — — — +14 +77 +135 37.0% -1.05 2–7 (22%) 3–3 (50%) 92.0 +0.20
25 2015 1538 96.7 -2.54 -1.68 0.878 46.9% — +61 — 27.3% -1.36 0–1 — — +0.39 2007 1579 115.5 — — — — -13 +59 — 50.0% +0.06 3–5 (38%) 3–4 (43%) 98.3 +0.21
26 2016 1610 126.0 -0.59 +0.85 0.991 49.9% -41 +61 +66 48.9% -0.08 0–3 (0%) 2–0 — -0.52 2008 1574 111.3 — — — — -45 +84 — 48.5% -0.08 10–9 (53%) 3–5 (38%) 100.5 +0.48
27 2017 1716 132.6 +0.64 +0.86 1.029 50.7% -70 +16 -7 55.1% +0.24 6–4 (60%) 9–1 (90%) 109.2 -0.63 2009 1534 110.3 — — — — -72 +97 — 35.0% -0.95 5–5 (50%) 4–5 (44%) 100.5 -0.40
28 2018 1613 124.0 -2.37 -0.01 0.917 48.2% -11 +75 +59 41.8% -0.68 6–7 (46%) 3–2 (60%) 98.8 -0.04 2010 1657 126.4 — — — — -49 -66 +4 46.2% -0.20 10–5 (67%) 5–6 (45%) 106.2 +0.89
29 2019 1637 121.7 -0.44 +1.14 1.047 50.9% +4 +13 — 52.9% +0.44 11–8 (58%) 2–6 (25%) 98.8 +2.04 2011 1713 131.7 — — — — -15 -60 -54 50.4% -0.03 13–6 (68%) 7–4 (64%) 109.2 +0.80
30 2020 1658 127.1 -1.60 -0.28 0.877 47.8% +21 — — 39.3% -0.96 1–5 (17%) 2–1 (67%) — -0.13 2012 1721 128.0 — — — — -45 -9 -3 51.0% +0.17 10–6 (63%) 5–7 (42%) 103.3 -0.68
31 2021 1746 137.7 +1.71 +1.43 1.060 51.2% -47 +61 -94 54.3% +0.23 6–4 (60%) 6–3 (67%) 107.5 -0.15 2013 1676 139.6 — — — — -9 +65 +31 51.7% +0.15 9–9 (50%) 6–9 (40%) 95.7 -1.87
32 2022 1693 141.4 +0.14 +1.66 1.032 50.7% +59 +13 -6 53.1% +0.35 7–7 (50%) 2–5 (29%) 100.0 +0.93 2014 1612 127.9 -2.87 -0.03 0.906 47.8% +13 +61 +151 50.8% -0.13 10–8 (56%) 11–4 (73%) 104.3 -0.55
33 2023 1826 151.2 +1.66 +1.58 1.025 50.8% +38 -98 -103 51.4% +0.12 9–8 (53%) 8–6 (57%) 103.7 -2.05 2015 1549 110.8 -2.79 +1.36 0.935 48.1% -28 +101 +170 40.5% -0.84 2–6 (25%) 3–4 (43%) 95.0 -0.51
34 2024 1753 140.2 -0.21 +0.26 0.955 49.0% +129 -53 -110 44.6% -0.46 4–5 (44%) 3–5 (38%) 97.1 -0.13 2016 1486 101.6 -2.24 -1.27 0.765 45.0% -28 — — 27.3% -1.55 0–3 (0%) 0–1 — +0.16
35 2025 1869 152.8 +2.88 +1.63 1.157 52.9% +59 -151 — 57.7% +0.61 11–8 (58%) 5–5 (50%) 103.1 -1.22 — — — — — — — — — — — — — — — —
36 2026 1988 161.2 +3.63 +3.13 1.167 53.1% +25 -62 -346 68.8% +1.33 7–7 (50%) 11–4 (73%) 105.7 -0.80 — — — — — — — — — — — — — — — —
Career — 2024 140.1 +0.04 +0.32 0.986 49.8% +10 -3 -66 50.5% -0.03 131–110 (54%) 87–73 (54%) 110.1 -0.17 — 1804 125.9 -2.79 +0.55 0.910 47.8% -34 +51 +56 47.9% -0.19 110–93 (54%) 67–62 (52%) 106.6 +0.50

Career Rivalries

Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.