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

Samantha Stosur vs Klara Koukalova H2H: 5-2

Samantha Stosur holds a 5–2 lead over Klara Koukalova in their WTA head-to-head. Across 7 main-draw meetings, Samantha Stosur leads 4–1 on hard courts, while they are tied 1–1 on clay. Most recently, Samantha Stosur won the 2015 Bad Gastein round of 16 6-1 6-0.

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Samantha Stosur
AUS Age 42 Right-Handed 175 cm / 5'9"
H2H
5 – 2
7 main-draw meetings
Klara Koukalova
CZE Age 44 Right-Handed 166 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Samantha Stosur #23 6-1 6-0 Klara Koukalova #100 Match data Jul 24, 2015* R16 Bad Gastein International → modern equivalent WTA 250 Clay
Samantha Stosur #17 6-3 6-4 Klara Koukalova #32 Match data Jan 15, 2014* R128 Australian Open Grand Slam Hard
Klara Koukalova #37 6-3 6-2 Samantha Stosur #17 Match data Jan 11, 2014* SF Hobart International International → modern equivalent WTA 250 Hard
Samantha Stosur #9 6-1 6-3 Klara Koukalova #31 Match data Oct 20, 2012* QF Moscow Premier → modern equivalent WTA 500 Hard
Samantha Stosur #48 7-6(5) 7-6(0) Klara Koukalova #72 Match data Jan 21, 2009* R128 Australian Open Grand Slam Hard
Samantha Stosur #27 6-3 6-1 Klara Koukalova #119 Match data Jan 17, 2007* R128 Australian Open Grand Slam Hard
Klara Koukalova #47 6-3 6-3 Samantha Stosur #55 Match data Apr 14, 2005* R32 Charleston Open Tier I → modern equivalent WTA 1000 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
Samantha Stosur #531 #4 6,195 2,072 459 345 57.1% 1 0 0 2 6 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 Samantha Stosur Klara Koukalova
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 2002 0–2 0.0% #245 1,475 0 0 — — — — — — —
19 2003 2–4 33.3% #163 1,493 0 0 2001 5–4 55.6% #139 1,519 0 0
20 2004 17–17 50.0% #65 1,605 0 0 2002 4–5 44.4% #117 1,527 0 0
21 2005 18–22 45.0% #46 1,588 0 0 2003 14–19 42.4% #63 1,537 0 0
22 2006 29–24 54.7% #29 1,747 0 0 2004 26–23 53.1% #46 1,611 0 0
23 2007 15–15 50.0% #46 1,724 0 0 2005 32–19 62.7% #35 1,764 0 2
24 2008 18–12 60.0% #52 1,754 0 0 2006 10–22 31.2% #117 1,546 0 2
25 2009 38–20 65.5% #13 1,887 0 1 2007 12–12 50.0% #63 1,578 0 2
26 2010 43–19 69.4% #6 1,931 0 2 2008 21–22 48.8% #72 1,574 0 2
27 2011 46–21 68.7% #6 1,967 1 3 2009 8–17 32.0% #90 1,533 0 2
28 2012 40–24 62.5% #9 1,873 1 3 2010 20–20 50.0% #41 1,656 0 2
29 2013 40–22 64.5% #18 1,904 1 5 2011 29–25 53.7% #41 1,713 0 2
30 2014 32–22 59.3% #22 1,860 1 6 2012 24–22 52.2% #28 1,721 0 2
31 2015 34–22 60.7% #27 1,782 1 8 2013 27–25 51.9% #35 1,675 0 2
32 2016 30–23 56.6% #21 1,702 1 8 2014 29–27 51.8% #40 1,611 0 3
33 2017 22–19 53.7% #41 1,731 1 9 2015 14–22 38.9% #99 1,549 0 3
34 2018 17–24 41.5% #74 1,655 1 9 2016 0–4 0.0% #400 1,486 0 3
35 2019 15–17 46.9% #99 1,631 1 9 — — — — — — —
36 2020 1–3 25.0% #112 1,607 1 9 — — — — — — —
37 2021 1–10 9.1% #382 1,518 1 9 — — — — — — —
38 2022 1–3 25.0% #529 1,506 1 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 Samantha Stosur 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 %
18 2002 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
19 2003 2 3 5 40.0% — — — — 0 1 1 0.0% — — — — 2001 — — — — 5 3 8 62.5% — — — — 0 1 1 0.0%
20 2004 12 11 23 52.2% 3 4 7 42.9% 2 2 4 50.0% — — — — 2002 0 2 2 0.0% 4 3 7 57.1% — — — — — — — —
21 2005 12 13 25 48.0% 3 5 8 37.5% 2 3 5 40.0% 1 1 2 50.0% 2003 3 6 9 33.3% 11 11 22 50.0% 0 1 1 0.0% 0 1 1 0.0%
22 2006 18 15 33 54.5% 6 5 11 54.5% 2 2 4 50.0% 3 2 5 60.0% 2004 8 12 20 40.0% 13 9 22 59.1% 5 2 7 71.4% — — — —
23 2007 6 7 13 46.2% 6 5 11 54.5% 1 2 3 33.3% 2 1 3 66.7% 2005 16 11 27 59.3% 11 6 17 64.7% 5 1 6 83.3% 0 1 1 0.0%
24 2008 11 7 18 61.1% 2 2 4 50.0% 5 3 8 62.5% — — — — 2006 4 11 15 26.7% 4 7 11 36.4% 1 3 4 25.0% 1 1 2 50.0%
25 2009 29 14 43 67.4% 6 4 10 60.0% 3 2 5 60.0% — — — — 2007 5 7 12 41.7% 7 5 12 58.3% — — — — — — — —
26 2010 22 14 36 61.1% 18 3 21 85.7% 3 2 5 60.0% — — — — 2008 6 9 15 40.0% 15 10 25 60.0% 0 2 2 0.0% 0 1 1 0.0%
27 2011 31 14 45 68.9% 12 5 17 70.6% 3 2 5 60.0% — — — — 2009 1 7 8 12.5% 7 9 16 43.8% 0 1 1 0.0% — — — —
28 2012 25 16 41 61.0% 14 5 19 73.7% 1 3 4 25.0% — — — — 2010 12 11 23 52.2% 5 8 13 38.5% 3 1 4 75.0% — — — —
29 2013 31 15 46 67.4% 6 5 11 54.5% 3 2 5 60.0% — — — — 2011 16 15 31 51.6% 10 7 17 58.8% 2 2 4 50.0% 1 1 2 50.0%
30 2014 23 14 37 62.2% 8 5 13 61.5% 1 3 4 25.0% — — — — 2012 8 12 20 40.0% 8 6 14 57.1% 5 3 8 62.5% 3 1 4 75.0%
31 2015 16 15 31 51.6% 16 5 21 76.2% 2 2 4 50.0% — — — — 2013 17 16 33 51.5% 7 6 13 53.8% 2 2 4 50.0% 1 1 2 50.0%
32 2016 11 15 26 42.3% 18 6 24 75.0% 1 2 3 33.3% — — — — 2014 18 17 35 51.4% 4 6 10 40.0% 6 3 9 66.7% 1 1 2 50.0%
33 2017 10 13 23 43.5% 12 6 18 66.7% — — — — — — — — 2015 5 14 19 26.3% 6 5 11 54.5% 3 3 6 50.0% — — — —
34 2018 3 13 16 18.8% 9 7 16 56.3% 5 4 9 55.6% — — — — 2016 0 4 4 0.0% — — — — — — — — — — — —
35 2019 9 11 20 45.0% 4 3 7 57.1% 2 3 5 40.0% — — — — — — — — — — — — — — — — — — — — —
36 2020 1 3 4 25.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
37 2021 1 7 8 12.5% — — — — 0 3 3 0.0% — — — — — — — — — — — — — — — — — — — — —
38 2022 1 2 3 33.3% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 274 224 498 55.0% 143 76 219 65.3% 36 41 77 46.8% 6 4 10 60.0% — 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 648/803 of Samantha Stosur'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 Samantha Stosur 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 2003 1/6 6.0 5.0 49.4% 74.4% 35.0% 33.3% 33.3% 54.4% 38.2% — —/— — — — — — — — — —
20 2004 5/34 2.2 2.4 49.6% 64.1% 45.0% 55.6% 30.1% 54.4% 34.4% — —/— — — — — — — — — —
21 2005 9/40 4.7 4.4 56.5% 70.7% 48.7% 49.9% 46.1% 61.2% 40.8% — —/— — — — — — — — — —
22 2006 36/53 4.1 2.3 61.8% 64.6% 47.1% 51.1% 39.0% 58.2% 38.5% — —/— — — — — — — — — —
23 2007 29/30 4.4 2.9 60.9% 66.0% 45.8% 59.0% 45.7% 57.6% 38.6% — —/— — — — — — — — — —
24 2008 24/30 5.1 3.5 51.9% 71.1% 51.5% 59.2% 42.5% 61.4% 42.9% — —/— — — — — — — — — —
25 2009 52/58 4.8 3.5 58.8% 68.8% 50.7% 61.2% 53.9% 61.1% 43.5% — —/— — — — — — — — — —
26 2010 59/62 4.8 3.2 60.0% 70.7% 51.5% 57.8% 49.4% 63.0% 42.8% — —/— — — — — — — — — —
27 2011 59/67 3.2 2.1 63.5% 71.2% 53.3% 62.1% 48.8% 64.6% 42.2% — —/— — — — — — — — — —
28 2012 57/64 3.8 3.2 64.6% 68.1% 51.2% 59.1% 44.5% 62.1% 43.0% — —/— — — — — — — — — —
29 2013 56/62 2.9 3.7 61.8% 68.1% 48.2% 61.2% 50.2% 60.3% 45.1% — —/— — — — — — — — — —
30 2014 51/54 4.4 2.8 61.7% 69.1% 51.1% 55.0% 50.9% 62.3% 42.9% — —/— — — — — — — — — —
31 2015 43/56 4.7 3.4 60.4% 69.7% 59.1% 58.6% 45.0% 65.5% 41.4% — —/— — — — — — — — — —
32 2016 40/53 3.5 4.8 60.5% 64.9% 45.1% 52.4% 46.1% 57.1% 40.0% 2014 31/56 1.8 5.0 55.4% 61.0% 41.7% 47.6% 48.1% 51.9% 43.5%
33 2017 39/41 3.8 2.9 62.6% 67.3% 48.7% 54.2% 47.9% 60.4% 44.2% 2015 31/36 0.7 5.5 55.6% 60.9% 46.7% 43.3% 48.1% 54.4% 42.6%
34 2018 40/42 4.1 3.3 60.6% 65.0% 47.7% 50.5% 45.7% 58.2% 37.6% 2016 4/4 0.3 7.3 56.6% 57.9% 44.2% 56.5% 65.5% 52.2% 36.5%
35 2019 30/32 4.2 4.5 58.8% 65.9% 40.1% 52.8% 41.5% 55.3% 40.2% — —/— — — — — — — — — —
36 2020 4/4 2.3 3.8 69.9% 61.3% 34.5% 40.5% 31.5% 53.8% 36.7% — —/— — — — — — — — — —
37 2021 10/11 2.8 3.7 64.7% 59.4% 36.6% 53.1% 31.7% 51.3% 32.8% — —/— — — — — — — — — —
38 2022 4/4 3.8 4.3 59.3% 59.0% 38.3% 25.7% 34.2% 51.4% 38.4% — —/— — — — — — — — — —
Career — 648/805 4.0 3.3 60.9% 67.9% 49.4% 56.7% 46.6% 60.6% 41.7% — 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 Samantha Stosur 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
18 2002 1476 94.7 — — — — — — — 20.0% -3.20 0–1 — — +0.06 — — — — — — — — — — — — — — — —
19 2003 1493 117.7 +0.87 +0.74 0.837 46.5% +24 — — 35.7% 0.00 1–1 0–5 (0%) — -0.19 2001 1520 104.0 — — — — — +55 — 47.8% +0.26 4–1 (80%) 0–1 — +1.03
20 2004 1606 118.2 -0.27 -2.88 0.756 44.8% +5 -91 -21 51.3% -0.46 3–5 (38%) 7–2 (78%) 102.6 -1.27 2002 1527 105.4 — — — — — +71 — 50.0% -0.42 2–4 (33%) 1–0 — +0.68
21 2005 1589 131.3 +2.67 -1.67 1.051 50.5% +30 -61 -33 44.9% -0.27 5–8 (38%) 6–10 (38%) 95.4 -0.78 2003 1537 119.8 — — — — -60 +108 — 44.4% -0.35 7–8 (47%) 1–3 (25%) 99.1 +0.56
22 2006 1748 143.1 +1.45 -3.76 0.920 48.0% +2 -155 -135 52.2% +0.09 7–6 (54%) 3–8 (27%) 98.8 -0.70 2004 1612 117.6 — — — — -110 +85 +30 49.5% -0.07 8–7 (53%) 6–4 (60%) 103.5 +0.67
23 2007 1724 135.6 +1.83 -2.92 0.911 48.6% -2 -43 -124 50.7% +0.19 5–4 (56%) 2–6 (25%) 98.6 -2.25 2005 1764 126.4 — — — — -90 +7 -18 55.5% +0.09 15–4 (79%) 9–2 (82%) 118.0 +1.13
24 2008 1755 134.8 +4.41 +0.22 1.111 52.1% -11 -77 -81 58.1% +0.69 2–4 (33%) 2–2 (50%) 96.0 -0.47 2006 1547 107.1 — — — — +14 +77 +135 37.0% -1.05 2–7 (22%) 3–3 (50%) 92.0 +0.20
25 2009 1888 154.7 +5.39 +0.57 1.119 52.5% -7 -129 -180 63.0% +0.94 10–11 (48%) 10–5 (67%) 104.0 -1.65 2007 1579 115.5 — — — — -13 +59 — 50.0% +0.06 3–5 (38%) 3–4 (43%) 98.3 +0.21
26 2010 1932 159.5 +7.09 +0.23 1.156 52.9% -40 +78 -207 63.9% +1.12 14–6 (70%) 10–9 (53%) 107.5 -1.75 2008 1574 111.3 — — — — -45 +84 — 48.5% -0.08 10–9 (53%) 3–5 (38%) 100.5 +0.48
27 2011 1968 158.2 +8.42 -0.10 1.193 53.4% -20 +28 -223 64.2% +1.11 12–7 (63%) 8–6 (57%) 102.1 -0.95 2009 1534 110.3 — — — — -72 +97 — 35.0% -0.95 5–5 (50%) 4–5 (44%) 100.5 -0.40
28 2012 1873 150.5 +5.95 +0.23 1.134 52.5% +7 +160 -197 58.8% +0.71 13–11 (54%) 8–14 (36%) 93.9 +1.71 2010 1657 126.4 — — — — -49 -66 +4 46.2% -0.20 10–5 (67%) 5–6 (45%) 106.2 +0.89
29 2013 1904 152.1 +4.49 +1.51 1.138 52.7% +14 +46 -214 63.6% +1.01 11–9 (55%) 6–4 (60%) 99.3 +1.39 2011 1713 131.7 — — — — -15 -60 -54 50.4% -0.03 13–6 (68%) 7–4 (64%) 109.2 +0.80
30 2014 1860 149.0 +5.95 +0.29 1.140 52.5% +6 +80 -205 59.0% +0.65 6–12 (33%) 7–6 (54%) 90.0 -1.01 2012 1721 128.0 — — — — -45 -9 -3 51.0% +0.17 10–6 (63%) 5–7 (42%) 103.3 -0.68
31 2015 1783 141.4 +5.95 +0.02 1.201 53.3% -26 +170 -121 55.7% +0.79 10–6 (63%) 3–8 (27%) 96.9 -0.45 2013 1676 139.6 — — — — -9 +65 +31 51.7% +0.15 9–9 (50%) 6–9 (40%) 95.7 -1.87
32 2016 1702 133.6 +1.07 -2.01 0.933 48.8% -49 +307 -57 50.9% -0.12 12–4 (75%) 7–8 (47%) 102.9 -0.09 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 2017 1732 137.4 +3.91 +0.24 1.115 52.4% -86 +251 — 55.6% +0.41 6–11 (35%) 6–0 (100%) 99.3 +0.51 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 2018 1655 126.0 +1.35 -4.20 0.900 48.1% -67 +228 +30 40.0% -0.64 3–4 (43%) 2–7 (22%) 93.2 -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 2019 1631 116.9 -0.46 -2.06 0.900 47.9% -38 +150 +51 46.7% -0.59 6–5 (55%) 6–0 (100%) 106.9 +0.48 — — — — — — — — — — — — — — — —
36 2020 1607 111.3 -1.57 -0.87 0.795 45.4% -26 — — 25.0% -2.25 — 2–0 — -0.08 — — — — — — — — — — — — — — — —
37 2021 1518 99.9 -2.40 -3.51 0.673 42.9% -10 — +80 20.0% -2.40 0–3 (0%) — — +0.44 — — — — — — — — — — — — — — — —
38 2022 1506 100.9 -2.15 -2.55 0.791 45.1% +8 — — 22.2% -1.55 1–0 0–3 (0%) — +0.30 — — — — — — — — — — — — — — — —
Career — 2072 148.5 +4.28 -0.68 1.059 51.2% -13 +101 -98 55.2% +0.39 127–118 (52%) 95–103 (48%) 95.8 -0.97 — 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.