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

Madison Keys vs Klara Koukalova H2H: 3-0

Madison Keys holds a 3–0 lead over Klara Koukalova in their WTA head-to-head. Across 3 main-draw meetings, Madison Keys leads 2–0 on hard courts and 1–0 on grass. Most recently, Madison Keys won the 2015 US Open first round 6-2 6-4.

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Madison Keys
United States Age 31 Right-Handed 178 cm / 5'10"
H2H
3 – 0
3 main-draw meetings
Klara Koukalova
CZE Age 44 Right-Handed 166 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Madison Keys #19 6-2 6-4 Klara Koukalova #109 Match data Sep 2, 2015* R128 US Open Grand Slam Hard
Madison Keys #18 6-3 6-2 Klara Koukalova #88 Match data Mar 14, 2015* R64 Indian Wells Open Premier Mandatory → modern equivalent WTA 1000 Hard
Madison Keys #30 7-5 6-7(3) 6-2 Klara Koukalova #32 Match data Jun 27, 2014* R64 Wimbledon Grand Slam 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.

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
Madison Keys #24 #5 5,004 2,134 374 217 63.3% 1 1 0 7 2 11
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 Madison Keys Klara Koukalova
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
14 2009 1–1 50.0% #616 1,512 0 0 — — — — — — —
16 2011 1–2 33.3% #273 1,516 0 0 — — — — — — —
17 2012 1–4 20.0% #137 1,514 0 0 — — — — — — —
18 2013 24–17 58.5% #38 1,725 0 0 — — — — — — —
19 2014 27–21 56.2% #30 1,743 0 1 2001 5–4 55.6% #139 1,519 0 0
20 2015 31–19 62.0% #18 1,810 0 1 2002 4–5 44.4% #117 1,527 0 0
21 2016 46–18 71.9% #8 1,943 0 2 2003 14–19 42.4% #63 1,537 0 0
22 2017 17–10 63.0% #19 1,902 0 3 2004 26–23 53.1% #46 1,611 0 0
23 2018 28–16 63.6% #17 1,907 0 3 2005 32–19 62.7% #35 1,764 0 2
24 2019 27–13 67.5% #13 1,913 0 5 2006 10–22 31.2% #117 1,546 0 2
25 2020 8–5 61.5% #16 1,869 0 5 2007 12–12 50.0% #63 1,578 0 2
26 2021 11–15 42.3% #56 1,733 0 5 2008 21–22 48.8% #72 1,574 0 2
27 2022 30–19 61.2% #11 1,865 0 6 2009 8–17 32.0% #90 1,533 0 2
28 2023 29–16 64.4% #12 1,907 0 7 2010 20–20 50.0% #41 1,656 0 2
29 2024 25–12 67.6% #21 1,945 0 8 2011 29–25 53.7% #41 1,713 0 2
30 2025 37–15 71.2% #7 1,964 1 10 2012 24–22 52.2% #28 1,721 0 2
31 2026 31–14 68.9% #24 1,982 1 11 2013 27–25 51.9% #35 1,675 0 2
32 — — — — — — — 2014 29–27 51.8% #40 1,611 0 3
33 — — — — — — — 2015 14–22 38.9% #99 1,549 0 3
34 — — — — — — — 2016 0–4 0.0% #400 1,486 0 3

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 Madison Keys 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 %
14 2009 — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — —
16 2011 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
17 2012 1 4 5 20.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
18 2013 14 11 25 56.0% 5 4 9 55.6% 5 2 7 71.4% — — — — — — — — — — — — — — — — — — — — —
19 2014 14 14 28 50.0% 5 5 10 50.0% 8 2 10 80.0% — — — — 2001 — — — — 5 3 8 62.5% — — — — 0 1 1 0.0%
20 2015 18 12 30 60.0% 9 5 14 64.3% 4 2 6 66.7% — — — — 2002 0 2 2 0.0% 4 3 7 57.1% — — — — — — — —
21 2016 28 13 41 68.3% 10 4 14 71.4% 8 1 9 88.9% — — — — 2003 3 6 9 33.3% 11 11 22 50.0% 0 1 1 0.0% 0 1 1 0.0%
22 2017 15 5 20 75.0% 1 4 5 20.0% 1 1 2 50.0% — — — — 2004 8 12 20 40.0% 13 9 22 59.1% 5 2 7 71.4% — — — —
23 2018 16 10 26 61.5% 10 5 15 66.7% 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 2019 16 9 25 64.0% 10 3 13 76.9% 1 1 2 50.0% — — — — 2006 4 11 15 26.7% 4 7 11 36.4% 1 3 4 25.0% 1 1 2 50.0%
25 2020 8 4 12 66.7% 0 1 1 0.0% — — — — — — — — 2007 5 7 12 41.7% 7 5 12 58.3% — — — — — — — —
26 2021 3 9 12 25.0% 3 4 7 42.9% 5 2 7 71.4% — — — — 2008 6 9 15 40.0% 15 10 25 60.0% 0 2 2 0.0% 0 1 1 0.0%
27 2022 25 14 39 64.1% 4 4 8 50.0% 1 1 2 50.0% — — — — 2009 1 7 8 12.5% 7 9 16 43.8% 0 1 1 0.0% — — — —
28 2023 14 12 26 53.8% 6 3 9 66.7% 9 1 10 90.0% — — — — 2010 12 11 23 52.2% 5 8 13 38.5% 3 1 4 75.0% — — — —
29 2024 7 6 13 53.8% 13 4 17 76.5% 5 2 7 71.4% — — — — 2011 16 15 31 51.6% 10 7 17 58.8% 2 2 4 50.0% 1 1 2 50.0%
30 2025 24 8 32 75.0% 9 4 13 69.2% 4 3 7 57.1% — — — — 2012 8 12 20 40.0% 8 6 14 57.1% 5 3 8 62.5% 3 1 4 75.0%
31 2026 14 9 23 60.9% 7 3 10 70.0% 10 2 12 83.3% — — — — 2013 17 16 33 51.5% 7 6 13 53.8% 2 2 4 50.0% 1 1 2 50.0%
32 — — — — — — — — — — — — — — — — — 2014 18 17 35 51.4% 4 6 10 40.0% 6 3 9 66.7% 1 1 2 50.0%
33 — — — — — — — — — — — — — — — — — 2015 5 14 19 26.3% 6 5 11 54.5% 3 3 6 50.0% — — — —
34 — — — — — — — — — — — — — — — — — 2016 0 4 4 0.0% — — — — — — — — — — — —
Career — 218 142 360 60.6% 93 54 147 63.3% 63 21 84 75.0% — — — — — 119 154 273 43.6% 117 101 218 53.7% 32 24 56 57.1% 7 9 16 43.8%

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 Madison Keys 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
14 2009 1513 104.9 -0.92 -0.60 0.987 49.0% — — — 50.0% -0.75 — — — -0.15 — — — — — — — — — — — — — — — —
16 2011 1517 113.3 -3.13 -0.25 1.071 51.6% +19 — — 50.0% +0.25 0–2 0–1 — -0.02 — — — — — — — — — — — — — — — —
17 2012 1514 113.2 -0.48 -2.14 0.738 43.5% +13 — — 18.2% -2.09 1–0 0–1 — -0.51 — — — — — — — — — — — — — — — —
18 2013 1726 137.3 +4.59 -0.90 1.100 51.9% -46 -118 -57 58.2% +0.62 4–5 (44%) 5–6 (45%) 99.0 +0.04 — — — — — — — — — — — — — — — —
19 2014 1744 136.9 +5.12 +0.02 1.142 52.3% -64 -93 +79 56.9% +0.45 6–10 (38%) 7–8 (47%) 96.1 -0.67 2001 1520 104.0 — — — — — +55 — 47.8% +0.26 4–1 (80%) 0–1 — +1.03
20 2015 1811 145.8 +4.84 +0.40 1.147 52.7% -23 -103 +11 63.6% +1.03 7–8 (47%) 5–5 (50%) 96.8 +0.70 2002 1527 105.4 — — — — — +71 — 50.0% -0.42 2–4 (33%) 1–0 — +0.68
21 2016 1943 152.0 +7.53 +1.31 1.219 53.7% -32 -117 -34 65.8% +1.11 17–6 (74%) 14–10 (58%) 107.1 -0.49 2003 1537 119.8 — — — — -60 +108 — 44.4% -0.35 7–8 (47%) 1–3 (25%) 99.1 +0.56
22 2017 1903 141.2 +3.97 +1.46 1.155 52.9% +43 -160 — 62.5% +0.75 4–6 (40%) 4–2 (67%) 97.5 +0.26 2004 1612 117.6 — — — — -110 +85 +30 49.5% -0.07 8–7 (53%) 6–4 (60%) 103.5 +0.67
23 2018 1908 147.8 +5.83 +1.52 1.190 53.3% +17 -74 -12 68.1% +1.16 5–6 (45%) 7–4 (64%) 100.2 +1.54 2005 1764 126.4 — — — — -90 +7 -18 55.5% +0.09 15–4 (79%) 9–2 (82%) 118.0 +1.13
24 2019 1913 148.9 +4.30 +0.69 1.158 52.9% +7 -4 — 66.3% +1.05 7–7 (50%) 8–5 (62%) 99.5 +0.99 2006 1547 107.1 — — — — +14 +77 +135 37.0% -1.05 2–7 (22%) 3–3 (50%) 92.0 +0.20
25 2020 1869 136.6 +5.26 +1.22 1.305 54.4% +23 — — 65.4% +1.46 1–1 1–1 — +0.59 2007 1579 115.5 — — — — -13 +59 — 50.0% +0.06 3–5 (38%) 3–4 (43%) 98.3 +0.21
26 2021 1733 127.6 +1.29 -0.81 0.988 49.7% +11 +120 +234 43.6% -0.07 3–2 (60%) 0–5 (0%) 97.1 +1.25 2008 1574 111.3 — — — — -45 +84 — 48.5% -0.08 10–9 (53%) 3–5 (38%) 100.5 +0.48
27 2022 1866 154.5 +3.52 +1.76 1.116 52.1% +14 -43 — 61.1% +0.58 8–9 (47%) 11–3 (79%) 100.5 -1.43 2009 1534 110.3 — — — — -72 +97 — 35.0% -0.95 5–5 (50%) 4–5 (44%) 100.5 -0.40
28 2023 1908 154.0 +4.44 +2.18 1.168 53.1% -24 -103 +181 65.3% +1.28 5–6 (45%) 5–5 (50%) 98.3 +0.85 2010 1657 126.4 — — — — -49 -66 +4 46.2% -0.20 10–5 (67%) 5–6 (45%) 106.2 +0.89
29 2024 1945 153.9 +3.89 +2.77 1.137 52.5% -67 +54 +149 67.1% +1.18 5–3 (63%) 9–3 (75%) 105.9 +0.01 2011 1713 131.7 — — — — -15 -60 -54 50.4% -0.03 13–6 (68%) 7–4 (64%) 109.2 +0.80
30 2025 1964 160.3 +2.87 +2.39 1.133 52.4% +63 +39 +107 63.5% +0.80 16–6 (73%) 10–7 (59%) 107.8 -0.52 2012 1721 128.0 — — — — -45 -9 -3 51.0% +0.17 10–6 (63%) 5–7 (42%) 103.3 -0.68
31 2026 1982 152.9 +5.09 +2.77 1.218 53.6% -16 +38 +175 65.7% +1.21 8–8 (50%) 6–7 (46%) 93.5 +1.20 2013 1676 139.6 — — — — -9 +65 +31 51.7% +0.15 9–9 (50%) 6–9 (40%) 95.7 -1.87
32 — — — — — — — — — — — — — — — — 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 — — — — — — — — — — — — — — — — 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 — — — — — — — — — — — — — — — — 2016 1486 101.6 -2.24 -1.27 0.765 45.0% -28 — — 27.3% -1.55 0–3 (0%) 0–1 — +0.16
Career — 2135 155.9 +4.46 +1.22 1.145 52.6% -6 -39 +96 62.4% +0.87 97–85 (53%) 92–73 (56%) 101.0 +0.62 — 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.