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

Sara Errani vs Klara Koukalova H2H: 6-1

Sara Errani holds a 6–1 lead over Klara Koukalova in their WTA head-to-head. Across 7 main-draw meetings, Sara Errani leads 3–1 on clay and 3–0 on hard courts. Most recently, Sara Errani won the 2014 Porsche Tennis Grand Prix round of 32 6-3 6-4.

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Sara Errani
Italy Age 39 Right-Handed 164 cm / 5'5"
H2H
6 – 1
7 main-draw meetings
Klara Koukalova
CZE Age 44 Right-Handed 166 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Sara Errani #11 6-3 6-4 Klara Koukalova #31 Match data Apr 24, 2014* R32 Porsche Tennis Grand Prix Premier → modern equivalent WTA 500 Clay
Sara Errani #6 6-2 7-6(2) Klara Koukalova #35 Match data Aug 8, 2013* R32 Canadian Open Premier 5 → modern equivalent WTA 1000 Hard
Sara Errani #6 6-4 6-4 Klara Koukalova #42 Match data Jul 13, 2013* SF Palermo International → modern equivalent WTA 250 Clay
Sara Errani #40 7-6(6) 6-4 Klara Koukalova #34 Match data May 4, 2011* R64 Madrid Open Premier Mandatory → modern equivalent WTA 1000 Clay
Sara Errani #46 6-2 7-6(5) Klara Koukalova #89 Match data Jan 20, 2010* R128 Australian Open Grand Slam Hard
Sara Errani #38 6-1 6-1 Klara Koukalova #118 Match data Jul 24, 2009* R16 Portoroz International → modern equivalent WTA 250 Hard
Klara Koukalova #53 6-1 6-3 Sara Errani #60 Match data May 1, 2008* R32 Prague Tier IV → modern equivalent WTA 250 Clay

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
Sara Errani #476 #5 5,835 2,005 387 304 56.0% 0 0 0 1 8 9
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 Sara Errani Klara Koukalova
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 2006 3–3 50.0% #174 1,529 0 0 2001 5–4 55.6% #139 1,519 0 0
20 2007 10–7 58.8% #69 1,613 0 0 2002 4–5 44.4% #117 1,527 0 0
21 2008 29–22 56.9% #42 1,735 0 2 2003 14–19 42.4% #63 1,537 0 0
22 2009 25–27 48.1% #47 1,655 0 2 2004 26–23 53.1% #46 1,611 0 0
23 2010 36–29 55.4% #43 1,722 0 2 2005 32–19 62.7% #35 1,764 0 2
24 2011 30–26 53.6% #45 1,673 0 2 2006 10–22 31.2% #117 1,546 0 2
25 2012 53–20 72.6% #6 1,897 0 6 2007 12–12 50.0% #63 1,578 0 2
26 2013 46–22 67.6% #7 1,885 0 7 2008 21–22 48.8% #72 1,574 0 2
27 2014 35–23 60.3% #14 1,773 0 7 2009 8–17 32.0% #90 1,533 0 2
28 2015 46–26 63.9% #20 1,751 0 8 2010 20–20 50.0% #41 1,656 0 2
29 2016 21–23 47.7% #49 1,656 0 9 2011 29–25 53.7% #41 1,713 0 2
30 2017 18–16 52.9% #144 1,652 0 9 2012 24–22 52.2% #28 1,721 0 2
31 2018 6–8 42.9% #112 1,767 0 9 2013 27–25 51.9% #35 1,675 0 2
32 2019 2–6 25.0% #198 1,575 0 9 2014 29–27 51.8% #40 1,611 0 3
33 2020 4–3 57.1% #131 1,606 0 9 2015 14–22 38.9% #99 1,549 0 3
34 2021 8–12 40.0% #121 1,574 0 9 2016 0–4 0.0% #400 1,486 0 3
35 2022 2–5 28.6% #109 1,606 0 9 — — — — — — —
36 2023 3–10 23.1% #105 1,548 0 9 — — — — — — —
37 2024 10–14 41.7% #105 1,693 0 9 — — — — — — —
38 2025 0–2 0.0% #476 1,590 0 9 — — — — — — —

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 Sara Errani 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 %
19 2006 — — — — 3 3 6 50.0% — — — — — — — — 2001 — — — — 5 3 8 62.5% — — — — 0 1 1 0.0%
20 2007 4 3 7 57.1% 6 4 10 60.0% — — — — — — — — 2002 0 2 2 0.0% 4 3 7 57.1% — — — — — — — —
21 2008 14 10 24 58.3% 14 10 24 58.3% 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 2009 16 14 30 53.3% 8 9 17 47.1% 1 3 4 25.0% 0 1 1 0.0% 2004 8 12 20 40.0% 13 9 22 59.1% 5 2 7 71.4% — — — —
23 2010 21 16 37 56.8% 11 10 21 52.4% 4 3 7 57.1% — — — — 2005 16 11 27 59.3% 11 6 17 64.7% 5 1 6 83.3% 0 1 1 0.0%
24 2011 14 16 30 46.7% 13 7 20 65.0% 3 3 6 50.0% — — — — 2006 4 11 15 26.7% 4 7 11 36.4% 1 3 4 25.0% 1 1 2 50.0%
25 2012 23 14 37 62.2% 28 3 31 90.3% 2 3 5 40.0% — — — — 2007 5 7 12 41.7% 7 5 12 58.3% — — — — — — — —
26 2013 22 15 37 59.5% 21 5 26 80.8% 0 1 1 0.0% 3 1 4 75.0% 2008 6 9 15 40.0% 15 10 25 60.0% 0 2 2 0.0% 0 1 1 0.0%
27 2014 13 14 27 48.1% 19 6 25 76.0% 0 2 2 0.0% 3 1 4 75.0% 2009 1 7 8 12.5% 7 9 16 43.8% 0 1 1 0.0% — — — —
28 2015 22 17 39 56.4% 22 7 29 75.9% 2 2 4 50.0% — — — — 2010 12 11 23 52.2% 5 8 13 38.5% 3 1 4 75.0% — — — —
29 2016 13 14 27 48.1% 7 7 14 50.0% 1 2 3 33.3% — — — — 2011 16 15 31 51.6% 10 7 17 58.8% 2 2 4 50.0% 1 1 2 50.0%
30 2017 7 6 13 53.8% 11 8 19 57.9% 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 2018 1 2 3 33.3% 5 6 11 45.5% — — — — — — — — 2013 17 16 33 51.5% 7 6 13 53.8% 2 2 4 50.0% 1 1 2 50.0%
32 2019 0 2 2 0.0% 2 4 6 33.3% — — — — — — — — 2014 18 17 35 51.4% 4 6 10 40.0% 6 3 9 66.7% 1 1 2 50.0%
33 2020 1 1 2 50.0% 3 2 5 60.0% — — — — — — — — 2015 5 14 19 26.3% 6 5 11 54.5% 3 3 6 50.0% — — — —
34 2021 2 6 8 25.0% 6 6 12 50.0% — — — — — — — — 2016 0 4 4 0.0% — — — — — — — — — — — —
35 2022 0 1 1 0.0% 2 4 6 33.3% — — — — — — — — — — — — — — — — — — — — — — — — —
36 2023 1 3 4 25.0% 1 5 6 16.7% 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
37 2024 4 6 10 40.0% 6 7 13 46.2% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
38 2025 — — — — 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 178 160 338 52.7% 188 115 303 62.0% 15 26 41 36.6% 6 3 9 66.7% — 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 593/692 of Sara Errani'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 Sara Errani 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%
19 2006 1/6 0.0 1.0 76.4% 33.3% 38.5% 50.0% 16.7% 34.5% 39.5% — —/— — — — — — — — — —
20 2007 12/17 0.8 2.3 66.1% 56.1% 48.0% 41.1% 52.6% 53.4% 44.4% — —/— — — — — — — — — —
21 2008 34/51 0.5 2.7 64.2% 57.6% 46.0% 48.1% 45.8% 53.2% 45.7% — —/— — — — — — — — — —
22 2009 44/52 0.3 2.5 69.2% 55.6% 44.7% 50.9% 45.1% 52.5% 44.6% — —/— — — — — — — — — —
23 2010 59/65 0.4 1.5 75.4% 56.2% 44.0% 55.5% 51.2% 53.4% 47.7% — —/— — — — — — — — — —
24 2011 53/56 0.4 1.9 76.2% 57.7% 47.2% 52.0% 48.6% 55.0% 47.1% — —/— — — — — — — — — —
25 2012 63/73 0.3 1.1 76.1% 60.2% 49.9% 54.1% 56.5% 57.5% 51.5% — —/— — — — — — — — — —
26 2013 57/68 0.1 1.1 82.1% 57.9% 48.5% 52.4% 51.1% 56.1% 50.4% — —/— — — — — — — — — —
27 2014 54/58 0.1 1.2 81.3% 56.1% 45.3% 52.4% 50.1% 54.1% 48.1% — —/— — — — — — — — — —
28 2015 54/72 0.1 1.4 83.3% 54.9% 50.0% 49.2% 55.4% 54.2% 49.7% — —/— — — — — — — — — —
29 2016 38/45 0.1 1.2 85.4% 52.9% 43.6% 51.6% 52.4% 51.5% 48.0% — —/— — — — — — — — — —
30 2017 31/34 0.1 1.3 78.7% 52.5% 41.2% 40.6% 54.1% 50.3% 49.6% — —/— — — — — — — — — —
31 2018 14/14 0.1 2.9 81.3% 57.5% 36.7% 41.9% 45.6% 53.8% 46.0% — —/— — — — — — — — — —
32 2019 8/8 0.1 8.0 61.0% 51.0% 28.4% 30.1% 44.3% 42.3% 46.0% 2014 31/56 1.8 5.0 55.4% 61.0% 41.7% 47.6% 48.1% 51.9% 43.5%
33 2020 7/7 0.0 4.6 77.6% 54.9% 39.2% 58.2% 57.5% 51.3% 51.3% 2015 31/36 0.7 5.5 55.6% 60.9% 46.7% 43.3% 48.1% 54.4% 42.6%
34 2021 19/20 0.1 2.9 78.4% 52.1% 36.1% 52.3% 55.8% 48.5% 49.7% 2016 4/4 0.3 7.3 56.6% 57.9% 44.2% 56.5% 65.5% 52.2% 36.5%
35 2022 7/7 0.0 1.9 80.7% 52.1% 33.4% 39.3% 47.1% 48.4% 45.5% — —/— — — — — — — — — —
36 2023 13/13 0.0 1.5 79.1% 47.8% 31.7% 36.6% 49.8% 44.5% 41.9% — —/— — — — — — — — — —
37 2024 23/24 0.1 1.5 77.5% 52.4% 42.3% 41.1% 47.1% 49.8% 44.4% — —/— — — — — — — — — —
38 2025 2/2 0.0 1.5 82.0% 53.3% 47.6% 49.5% 75.0% 52.2% 36.8% — —/— — — — — — — — — —
Career — 593/692 0.2 1.7 77.3% 55.8% 44.9% 49.9% 51.1% 53.3% 47.9% — 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 Sara Errani 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
19 2006 1529 107.3 -2.72 -1.03 0.604 36.7% — +41 — 46.2% -0.39 1–0 1–0 — -0.21 2001 1520 104.0 — — — — — +55 — 47.8% +0.26 4–1 (80%) 0–1 — +1.03
20 2007 1614 121.3 -0.77 +0.04 0.953 49.0% -56 +20 — 55.0% +0.43 4–2 (67%) 3–2 (60%) 103.4 -0.20 2002 1527 105.4 — — — — — +71 — 50.0% -0.42 2–4 (33%) 1–0 — +0.68
21 2008 1735 135.4 -1.78 +1.64 0.976 49.4% -49 -6 -147 53.8% +0.34 10–7 (59%) 4–5 (44%) 102.2 -1.64 2003 1537 119.8 — — — — -60 +108 — 44.4% -0.35 7–8 (47%) 1–3 (25%) 99.1 +0.56
22 2009 1655 132.5 -2.62 +1.07 0.938 48.6% +1 +49 -81 50.9% +0.04 5–7 (42%) 6–3 (67%) 100.5 +0.75 2004 1612 117.6 — — — — -110 +85 +30 49.5% -0.07 8–7 (53%) 6–4 (60%) 103.5 +0.67
23 2010 1723 134.3 -2.26 +3.11 1.025 50.6% +16 -53 -104 56.5% +0.29 6–11 (35%) 12–6 (67%) 100.8 +1.24 2005 1764 126.4 — — — — -90 +7 -18 55.5% +0.09 15–4 (79%) 9–2 (82%) 118.0 +1.13
24 2011 1673 134.0 -0.30 +3.09 1.047 51.0% -6 +66 -54 54.0% +0.26 7–11 (39%) 5–6 (45%) 97.1 -1.90 2006 1547 107.1 — — — — +14 +77 +135 37.0% -1.05 2–7 (22%) 3–3 (50%) 92.0 +0.20
25 2012 1898 155.0 +1.80 +6.73 1.210 54.4% -78 +149 -273 69.0% +1.52 11–5 (69%) 7–3 (70%) 107.8 -1.43 2007 1579 115.5 — — — — -13 +59 — 50.0% +0.06 3–5 (38%) 3–4 (43%) 98.3 +0.21
26 2013 1886 156.0 +1.16 +6.37 1.149 53.2% -27 +186 — 62.2% +0.85 10–5 (67%) 6–5 (55%) 103.2 -0.44 2008 1574 111.3 — — — — -45 +84 — 48.5% -0.08 10–9 (53%) 3–5 (38%) 100.5 +0.48
27 2014 1774 140.1 -1.37 +3.74 1.048 51.1% -49 +280 — 58.0% +0.40 9–10 (47%) 10–6 (63%) 95.0 +2.02 2009 1534 110.3 — — — — -72 +97 — 35.0% -0.95 5–5 (50%) 4–5 (44%) 100.5 -0.40
28 2015 1752 137.5 -3.26 +7.03 1.083 52.0% -25 +216 -179 58.6% +0.66 18–11 (62%) 12–6 (67%) 104.0 +3.08 2010 1657 126.4 — — — — -49 -66 +4 46.2% -0.20 10–5 (67%) 5–6 (45%) 106.2 +0.89
29 2016 1657 128.4 -3.45 +3.74 0.989 49.8% +7 +192 -112 49.5% -0.14 5–8 (38%) 8–5 (62%) 94.9 +0.33 2011 1713 131.7 — — — — -15 -60 -54 50.4% -0.03 13–6 (68%) 7–4 (64%) 109.2 +0.80
30 2017 1652 117.1 -4.83 +3.87 0.998 49.9% +19 +108 — 53.3% +0.13 5–4 (56%) 6–2 (75%) 103.4 +0.62 2012 1721 128.0 — — — — -45 -9 -3 51.0% +0.17 10–6 (63%) 5–7 (42%) 103.3 -0.68
31 2018 1767 125.7 -0.84 +2.69 0.996 50.0% +17 -5 — 48.5% -0.21 1–4 (20%) 2–1 (67%) 96.4 -1.13 2013 1676 139.6 — — — — -9 +65 +31 51.7% +0.15 9–9 (50%) 6–9 (40%) 95.7 -1.87
32 2019 1575 92.5 -7.16 -0.74 0.798 44.2% — +37 — 31.6% -1.74 1–2 (33%) — — +0.92 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 2020 1607 122.5 -2.17 +3.15 1.053 51.1% — +33 — 55.6% +0.06 2–2 (50%) 1–1 — -0.05 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 2021 1575 114.0 -4.44 +2.94 0.966 49.1% -11 +76 — 39.5% -0.79 2–3 (40%) 1–3 (25%) 97.1 -0.94 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 2022 1607 109.2 -3.27 +0.30 0.881 46.5% — +45 — 35.7% -0.64 1–1 0–1 — -0.07 — — — — — — — — — — — — — — — —
36 2023 1548 97.8 -6.59 -1.63 0.755 43.4% -51 +75 -7 24.1% -2.07 2–1 (67%) 0–1 — -0.14 — — — — — — — — — — — — — — — —
37 2024 1693 123.6 -4.63 +1.30 0.884 47.1% -121 +82 — 37.7% -0.94 5–0 (100%) 1–2 (33%) 106.5 -1.08 — — — — — — — — — — — — — — — —
38 2025 1590 105.5 -0.55 +0.36 0.771 45.0% — — — 20.0% -1.60 0–1 0–1 — -0.15 — — — — — — — — — — — — — — — —
Career — 2006 138.5 -1.81 +3.71 1.026 50.6% -25 +106 -122 54.6% +0.29 105–95 (53%) 85–59 (59%) 104.5 -0.06 — 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.