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

Klara Koukalova vs Aiko Nakamura H2H: 2-0

Klara Koukalova holds a 2–0 lead over Aiko Nakamura in their WTA head-to-head. Across 2 main-draw meetings, Klara Koukalova leads 2–0 on hard courts. Most recently, Klara Koukalova won the 2007 Bangkok round of 32 6-4 7-6(5).

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Klara Koukalova
CZE Age 44 Right-Handed 166 cm / 5'5"
H2H
2 – 0
2 main-draw meetings
Aiko Nakamura
JPN Age 42 Right-Handed 163 cm / 5'4"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Klara Koukalova #66 6-4 7-6(5) Aiko Nakamura #65 Match data Oct 11, 2007* R32 Bangkok Tier III → modern equivalent WTA 250 Hard
Klara Koukalova #68 6-3 6-4 Aiko Nakamura #52 Match data Oct 4, 2007* R32 Japan Women's Open Tier III → 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
Klara Koukalova #566 #20 1,860 1,803 275 288 48.8% 0 0 0 0 3 3
Aiko Nakamura #730 #47 569 1,644 50 76 39.7% 0 0 0 0 0 0

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 Klara Koukalova Aiko Nakamura
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 2001 5–4 55.6% #139 1,519 0 0 — — — — — — —
20 2002 4–5 44.4% #117 1,527 0 0 2004 1–2 33.3% #135 1,505 0 0
21 2003 14–19 42.4% #63 1,537 0 0 2005 11–13 45.8% #71 1,568 0 0
22 2004 26–23 53.1% #46 1,611 0 0 2006 19–18 51.4% #57 1,620 0 0
23 2005 32–19 62.7% #35 1,764 0 2 2007 13–21 38.2% #66 1,548 0 0
24 2006 10–22 31.2% #117 1,546 0 2 2008 5–18 21.7% #146 1,489 0 0
25 2007 12–12 50.0% #63 1,578 0 2 2009 0–2 0.0% #224 1,461 0 0
26 2008 21–22 48.8% #72 1,574 0 2 2010 1–1 50.0% #677 1,475 0 0
27 2009 8–17 32.0% #90 1,533 0 2 2011 0–1 0.0% #231 1,468 0 0
28 2010 20–20 50.0% #41 1,656 0 2 — — — — — — —
29 2011 29–25 53.7% #41 1,713 0 2 — — — — — — —
30 2012 24–22 52.2% #28 1,721 0 2 — — — — — — —
31 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 Klara Koukalova Aiko Nakamura
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 2001 — — — — 5 3 8 62.5% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
20 2002 0 2 2 0.0% 4 3 7 57.1% — — — — — — — — 2004 1 2 3 33.3% — — — — — — — — — — — —
21 2003 3 6 9 33.3% 11 11 22 50.0% 0 1 1 0.0% 0 1 1 0.0% 2005 9 10 19 47.4% 0 1 1 0.0% 1 1 2 50.0% 1 1 2 50.0%
22 2004 8 12 20 40.0% 13 9 22 59.1% 5 2 7 71.4% — — — — 2006 17 12 29 58.6% 2 3 5 40.0% 0 2 2 0.0% 0 1 1 0.0%
23 2005 16 11 27 59.3% 11 6 17 64.7% 5 1 6 83.3% 0 1 1 0.0% 2007 10 15 25 40.0% 1 3 4 25.0% 2 2 4 50.0% 0 1 1 0.0%
24 2006 4 11 15 26.7% 4 7 11 36.4% 1 3 4 25.0% 1 1 2 50.0% 2008 2 14 16 12.5% 1 2 3 33.3% 2 2 4 50.0% — — — —
25 2007 5 7 12 41.7% 7 5 12 58.3% — — — — — — — — 2009 0 1 1 0.0% — — — — 0 1 1 0.0% — — — —
26 2008 6 9 15 40.0% 15 10 25 60.0% 0 2 2 0.0% 0 1 1 0.0% 2010 1 1 2 50.0% — — — — — — — — — — — —
27 2009 1 7 8 12.5% 7 9 16 43.8% 0 1 1 0.0% — — — — 2011 0 1 1 0.0% — — — — — — — — — — — —
28 2010 12 11 23 52.2% 5 8 13 38.5% 3 1 4 75.0% — — — — — — — — — — — — — — — — — — — — —
29 2011 16 15 31 51.6% 10 7 17 58.8% 2 2 4 50.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
30 2012 8 12 20 40.0% 8 6 14 57.1% 5 3 8 62.5% 3 1 4 75.0% — — — — — — — — — — — — — — — — —
31 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 — 119 154 273 43.6% 117 101 218 53.7% 32 24 56 57.1% 7 9 16 43.8% — 40 56 96 41.7% 4 9 13 30.8% 5 8 13 38.5% 1 3 4 25.0%

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 Klara Koukalova Aiko Nakamura
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 2001 1520 104.0 — — — — — +55 — 47.8% +0.26 4–1 (80%) 0–1 — +1.03 — — — — — — — — — — — — — — — —
20 2002 1527 105.4 — — — — — +71 — 50.0% -0.42 2–4 (33%) 1–0 — +0.68 2004 1505 108.0 — — — — +23 — — 33.3% -1.17 — 1–0 — -0.35
21 2003 1537 119.8 — — — — -60 +108 — 44.4% -0.35 7–8 (47%) 1–3 (25%) 99.1 +0.56 2005 1568 117.9 -3.08 -1.83 0.770 44.8% +2 — — 45.8% -0.30 6–5 (55%) 1–5 (17%) 99.1 +0.24
22 2004 1612 117.6 — — — — -110 +85 +30 49.5% -0.07 8–7 (53%) 6–4 (60%) 103.5 +0.67 2006 1621 117.5 -1.07 -2.00 0.920 47.9% +24 -78 — 50.6% -0.13 5–6 (45%) 5–1 (83%) 101.1 +1.14
23 2005 1764 126.4 — — — — -90 +7 -18 55.5% +0.09 15–4 (79%) 9–2 (82%) 118.0 +1.13 2007 1548 108.1 -3.29 -1.84 0.891 47.2% -11 -43 +34 37.3% -0.84 5–4 (56%) 1–6 (14%) 97.1 +0.20
24 2006 1547 107.1 — — — — +14 +77 +135 37.0% -1.05 2–7 (22%) 3–3 (50%) 92.0 +0.20 2008 1489 112.6 -3.75 -4.17 0.729 43.7% -29 +17 +95 22.0% -2.16 3–3 (50%) 2–1 (67%) 102.7 -1.31
25 2007 1579 115.5 — — — — -13 +59 — 50.0% +0.06 3–5 (38%) 3–4 (43%) 98.3 +0.21 2009 1461 93.4 -2.15 -0.86 0.675 40.3% — — — 20.0% -2.60 0–1 — — +0.24
26 2008 1574 111.3 — — — — -45 +84 — 48.5% -0.08 10–9 (53%) 3–5 (38%) 100.5 +0.48 2010 1475 101.1 -2.97 -1.43 0.680 40.8% — — — 40.0% -2.00 1–0 1–0 — -0.01
27 2009 1534 110.3 — — — — -72 +97 — 35.0% -0.95 5–5 (50%) 4–5 (44%) 100.5 -0.40 2011 1469 95.0 — — — — — — — 0.0% -5.50 — — — -0.13
28 2010 1657 126.4 — — — — -49 -66 +4 46.2% -0.20 10–5 (67%) 5–6 (45%) 106.2 +0.89 — — — — — — — — — — — — — — — —
29 2011 1713 131.7 — — — — -15 -60 -54 50.4% -0.03 13–6 (68%) 7–4 (64%) 109.2 +0.80 — — — — — — — — — — — — — — — —
30 2012 1721 128.0 — — — — -45 -9 -3 51.0% +0.17 10–6 (63%) 5–7 (42%) 103.3 -0.68 — — — — — — — — — — — — — — — —
31 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 — 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 — 1644 115.0 -2.87 -2.40 0.829 45.9% +1 -43 +65 39.6% -0.84 20–19 (51%) 11–13 (46%) 101.2 +0.02

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.