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

Klara Koukalova vs Greta Arn H2H: 0-3

Greta Arn holds a 3–0 lead over Klara Koukalova in their WTA head-to-head. Across 3 main-draw meetings, Greta Arn leads 2–0 on clay and 1–0 on hard courts. Most recently, Greta Arn won the 2011 Canadian Open round of 64 6-3 6-1.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Klara Koukalova
CZE Age 44 Right-Handed 166 cm / 5'5"
H2H
0 – 3
3 main-draw meetings
Greta Arn
Hungary Age 47 Right-Handed 180 cm / 5'11"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Greta Arn #69 6-3 6-1 Klara Koukalova #43 Match data Aug 10, 2011* R64 Canadian Open Premier 5 → modern equivalent WTA 1000 Hard
Greta Arn #205 6-4 6-4 Klara Koukalova #78 Match data May 21, 2010* R16 Warsaw Premier → modern equivalent WTA 500 Clay
Greta Arn #180 6-1 6-0 Klara Koukalova #65 Match data Jul 12, 2008* QF Budapest Tier III → 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
Klara Koukalova #566 #20 1,860 1,803 275 288 48.8% 0 0 0 0 3 3
Greta Arn #448 #40 1,370 1,694 58 91 38.9% 0 0 0 0 2 2

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 Greta Arn
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 — — — — — — —
21 2003 14–19 42.4% #63 1,537 0 0 2000 0–4 0.0% #152 1,468 0 0
22 2004 26–23 53.1% #46 1,611 0 0 2001 4–9 30.8% #118 1,472 0 0
23 2005 32–19 62.7% #35 1,764 0 2 2002 7–13 35.0% #91 1,498 0 0
24 2006 10–22 31.2% #117 1,546 0 2 2003 0–2 0.0% #288 1,484 0 0
25 2007 12–12 50.0% #63 1,578 0 2 — — — — — — —
26 2008 21–22 48.8% #72 1,574 0 2 — — — — — — —
27 2009 8–17 32.0% #90 1,533 0 2 2006 1–1 50.0% #225 1,492 0 0
28 2010 20–20 50.0% #41 1,656 0 2 2007 6–7 46.2% #118 1,517 0 1
29 2011 29–25 53.7% #41 1,713 0 2 2008 7–5 58.3% #162 1,588 0 1
30 2012 24–22 52.2% #28 1,721 0 2 2009 1–4 20.0% #235 1,556 0 1
31 2013 27–25 51.9% #35 1,675 0 2 2010 7–11 38.9% #88 1,574 0 1
32 2014 29–27 51.8% #40 1,611 0 3 2011 17–15 53.1% #63 1,647 0 2
33 2015 14–22 38.9% #99 1,549 0 3 2012 7–15 31.8% #114 1,555 0 2
34 2016 0–4 0.0% #400 1,486 0 3 2013 0–2 0.0% #421 1,536 0 2
40 — — — — — — — 2019 1–3 25.0% #406 1,551 0 2

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 Greta Arn
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% — — — — — — — — — — — — — — — — — — — — — — — — —
21 2003 3 6 9 33.3% 11 11 22 50.0% 0 1 1 0.0% 0 1 1 0.0% 2000 0 1 1 0.0% 0 1 1 0.0% 0 1 1 0.0% 0 1 1 0.0%
22 2004 8 12 20 40.0% 13 9 22 59.1% 5 2 7 71.4% — — — — 2001 1 4 5 20.0% 2 4 6 33.3% — — — — 1 1 2 50.0%
23 2005 16 11 27 59.3% 11 6 17 64.7% 5 1 6 83.3% 0 1 1 0.0% 2002 4 6 10 40.0% 0 3 3 0.0% 2 2 4 50.0% 1 2 3 33.3%
24 2006 4 11 15 26.7% 4 7 11 36.4% 1 3 4 25.0% 1 1 2 50.0% 2003 0 1 1 0.0% — — — — — — — — 0 1 1 0.0%
25 2007 5 7 12 41.7% 7 5 12 58.3% — — — — — — — — — — — — — — — — — — — — — — — — —
26 2008 6 9 15 40.0% 15 10 25 60.0% 0 2 2 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
27 2009 1 7 8 12.5% 7 9 16 43.8% 0 1 1 0.0% — — — — 2006 1 1 2 50.0% — — — — — — — — — — — —
28 2010 12 11 23 52.2% 5 8 13 38.5% 3 1 4 75.0% — — — — 2007 0 2 2 0.0% 6 4 10 60.0% 0 1 1 0.0% — — — —
29 2011 16 15 31 51.6% 10 7 17 58.8% 2 2 4 50.0% 1 1 2 50.0% 2008 1 1 2 50.0% 6 4 10 60.0% — — — — — — — —
30 2012 8 12 20 40.0% 8 6 14 57.1% 5 3 8 62.5% 3 1 4 75.0% 2009 — — — — 1 4 5 20.0% — — — — — — — —
31 2013 17 16 33 51.5% 7 6 13 53.8% 2 2 4 50.0% 1 1 2 50.0% 2010 1 4 5 20.0% 4 6 10 40.0% 2 1 3 66.7% — — — —
32 2014 18 17 35 51.4% 4 6 10 40.0% 6 3 9 66.7% 1 1 2 50.0% 2011 9 9 18 50.0% 8 6 14 57.1% — — — — — — — —
33 2015 5 14 19 26.3% 6 5 11 54.5% 3 3 6 50.0% — — — — 2012 6 7 13 46.2% 1 5 6 16.7% 0 2 2 0.0% 0 1 1 0.0%
34 2016 0 4 4 0.0% — — — — — — — — — — — — 2013 0 2 2 0.0% — — — — — — — — — — — —
40 — — — — — — — — — — — — — — — — — 2019 1 3 4 25.0% — — — — — — — — — — — —
Career — 119 154 273 43.6% 117 101 218 53.7% 32 24 56 57.1% 7 9 16 43.8% — 24 41 65 36.9% 28 37 65 43.1% 4 7 11 36.4% 2 6 8 25.0%

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 66/96 of Klara Koukalova's and 98/108 of Greta Arn'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 Klara Koukalova Greta Arn
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%
28 — —/— — — — — — — — — — 2007 9/13 2.7 3.7 61.0% 62.8% 44.3% 42.2% 44.4% 55.6% 48.6%
29 — —/— — — — — — — — — — 2008 10/12 2.7 4.6 58.0% 64.1% 39.7% 49.7% 38.9% 54.1% 46.7%
30 — —/— — — — — — — — — — 2009 5/5 2.0 4.8 64.3% 63.3% 42.5% 59.7% 44.7% 55.9% 42.7%
31 — —/— — — — — — — — — — 2010 17/18 3.5 4.1 58.9% 58.2% 45.6% 47.5% 45.1% 52.3% 35.8%
32 2014 31/56 1.8 5.0 55.4% 61.0% 41.7% 47.6% 48.1% 51.9% 43.5% 2011 30/32 2.5 3.9 58.1% 60.7% 42.1% 53.7% 45.1% 53.3% 42.7%
33 2015 31/36 0.7 5.5 55.6% 60.9% 46.7% 43.3% 48.1% 54.4% 42.6% 2012 21/22 2.5 4.4 56.0% 63.7% 43.2% 50.7% 44.1% 55.0% 38.2%
34 2016 4/4 0.3 7.3 56.6% 57.9% 44.2% 56.5% 65.5% 52.2% 36.5% 2013 2/2 2.0 5.5 44.6% 62.4% 35.8% 40.8% 50.0% 47.5% 28.9%
40 — —/— — — — — — — — — — 2019 4/4 5.3 6.5 56.0% 60.3% 36.3% 58.5% 42.7% 49.8% 34.9%
Career — 66/563 1.2 5.4 55.5% 60.8% 44.2% 46.1% 49.2% 53.1% 42.7% — 98/149 2.8 4.3 58.0% 61.6% 42.5% 50.8% 44.2% 53.6% 40.9%

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 Greta Arn
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 — — — — — — — — — — — — — — — —
21 2003 1537 119.8 — — — — -60 +108 — 44.4% -0.35 7–8 (47%) 1–3 (25%) 99.1 +0.56 2000 1468 101.9 — — — — — — — 11.1% -2.33 0–1 0–2 — -0.18
22 2004 1612 117.6 — — — — -110 +85 +30 49.5% -0.07 8–7 (53%) 6–4 (60%) 103.5 +0.67 2001 1473 117.1 — — — — +30 +42 — 38.7% -0.84 1–4 (20%) 1–1 — -0.05
23 2005 1764 126.4 — — — — -90 +7 -18 55.5% +0.09 15–4 (79%) 9–2 (82%) 118.0 +1.13 2002 1499 117.8 — — — — +36 -41 +84 37.8% -0.87 2–3 (40%) 0–3 (0%) — -0.17
24 2006 1547 107.1 — — — — +14 +77 +135 37.0% -1.05 2–7 (22%) 3–3 (50%) 92.0 +0.20 2003 1485 99.8 — — — — — — — 20.0% -2.80 0–1 — — -0.13
25 2007 1579 115.5 — — — — -13 +59 — 50.0% +0.06 3–5 (38%) 3–4 (43%) 98.3 +0.21 — — — — — — — — — — — — — — — —
26 2008 1574 111.3 — — — — -45 +84 — 48.5% -0.08 10–9 (53%) 3–5 (38%) 100.5 +0.48 — — — — — — — — — — — — — — — —
27 2009 1534 110.3 — — — — -72 +97 — 35.0% -0.95 5–5 (50%) 4–5 (44%) 100.5 -0.40 2006 1492 101.1 — — — — — — — 50.0% -0.25 — — — +0.06
28 2010 1657 126.4 — — — — -49 -66 +4 46.2% -0.20 10–5 (67%) 5–6 (45%) 106.2 +0.89 2007 1518 107.2 -0.21 -0.11 1.094 51.7% — +44 — 46.9% -0.03 3–3 (50%) 3–2 (60%) 100.7 +0.10
29 2011 1713 131.7 — — — — -15 -60 -54 50.4% -0.03 13–6 (68%) 7–4 (64%) 109.2 +0.80 2008 1588 120.6 -0.21 +0.60 1.018 50.3% — +59 — 59.3% +0.41 1–2 (33%) 1–2 (33%) — -0.12
30 2012 1721 128.0 — — — — -45 -9 -3 51.0% +0.17 10–6 (63%) 5–7 (42%) 103.3 -0.68 2009 1556 108.5 -0.80 -1.13 0.968 49.2% — +39 — 38.5% -0.46 0–3 (0%) 1–1 — -0.31
31 2013 1676 139.6 — — — — -9 +65 +31 51.7% +0.15 9–9 (50%) 6–9 (40%) 95.7 -1.87 2010 1575 114.3 -2.22 -4.60 0.751 44.4% -81 +16 +48 38.1% -1.17 4–2 (67%) 1–1 — +0.44
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 2011 1648 125.2 -1.46 -0.86 0.914 48.2% -68 0 — 52.2% -0.34 6–3 (67%) 5–1 (83%) 107.1 -0.73
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 2012 1555 113.1 -0.79 -4.12 0.848 46.7% +29 +28 — 34.1% -1.00 1–3 (25%) 1–0 — +0.21
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 2013 1536 103.4 -0.19 -2.75 0.551 39.3% — — — 0.0% -4.00 — — — -0.23
39 — — — — — — — — — — — — — — — — 2018 1529 98.1 — — — — — — — — — — — — —
40 — — — — — — — — — — — — — — — — 2019 1551 101.3 -0.84 -3.20 0.696 42.8% +18 — — 30.0% -2.30 1–1 — — +0.06
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 — 1695 120.6 -1.12 -2.14 0.882 47.4% -8 +26 +69 41.4% -0.76 19–26 (42%) 13–13 (50%) 100.2 -0.70

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.