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

Irina-Camelia Begu vs Klara Koukalova H2H: 1-1

Irina-Camelia Begu and Klara Koukalova are tied 1–1 in their WTA head-to-head. Across 2 main-draw meetings, Irina-Camelia Begu leads 1–0 on clay, while Klara Koukalova leads 1–0 on hard courts. Most recently, Klara Koukalova won the 2011 Korea Open round of 16 6-1 6-1.

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Irina-Camelia Begu
Romania Age 36 Right-Handed 181 cm / 5'11"
H2H
1 – 1
2 main-draw meetings
Klara Koukalova
CZE Age 44 Right-Handed 166 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Klara Koukalova #43 6-1 6-1 Irina-Camelia Begu #38 Match data Sep 23, 2011* R16 Korea Open International → modern equivalent WTA 250 Hard
Irina-Camelia Begu #138 6-3 6-3 Klara Koukalova #34 Match data Apr 9, 2011* QF Marbella International → 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
Irina-Camelia Begu #461 #22 1,925 1,883 245 237 50.8% 0 0 0 0 6 6
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 Irina-Camelia Begu Klara Koukalova
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 2009 0–1 0.0% #234 1,493 0 0 — — — — — — —
19 2010 0–1 0.0% #202 1,485 0 0 2001 5–4 55.6% #139 1,519 0 0
20 2011 16–11 59.3% #40 1,657 0 0 2002 4–5 44.4% #117 1,527 0 0
21 2012 22–19 53.7% #52 1,728 0 1 2003 14–19 42.4% #63 1,537 0 0
22 2013 10–17 37.0% #131 1,558 0 1 2004 26–23 53.1% #46 1,611 0 0
23 2014 14–15 48.3% #41 1,617 0 1 2005 32–19 62.7% #35 1,764 0 2
24 2015 30–20 60.0% #31 1,698 0 2 2006 10–22 31.2% #117 1,546 0 2
25 2016 25–20 55.6% #29 1,682 0 3 2007 12–12 50.0% #63 1,578 0 2
26 2017 20–22 47.6% #43 1,663 0 4 2008 21–22 48.8% #72 1,574 0 2
27 2018 19–25 43.2% #67 1,592 0 4 2009 8–17 32.0% #90 1,533 0 2
28 2019 11–15 42.3% #102 1,560 0 4 2010 20–20 50.0% #41 1,656 0 2
29 2020 5–8 38.5% #78 1,712 0 4 2011 29–25 53.7% #41 1,713 0 2
30 2021 17–15 53.1% #62 1,738 0 4 2012 24–22 52.2% #28 1,721 0 2
31 2022 25–15 62.5% #34 1,832 0 5 2013 27–25 51.9% #35 1,675 0 2
32 2023 13–13 50.0% #75 1,776 0 5 2014 29–27 51.8% #40 1,611 0 3
33 2024 10–8 55.6% #79 1,803 0 5 2015 14–22 38.9% #99 1,549 0 3
34 2025 7–9 43.8% #144 1,758 0 6 2016 0–4 0.0% #400 1,486 0 3
35 2026 1–3 25.0% #461 1,725 0 6 — — — — — — —

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 Irina-Camelia Begu 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 2009 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
19 2010 — — — — 0 1 1 0.0% — — — — — — — — 2001 — — — — 5 3 8 62.5% — — — — 0 1 1 0.0%
20 2011 5 5 10 50.0% 11 5 16 68.8% 0 1 1 0.0% — — — — 2002 0 2 2 0.0% 4 3 7 57.1% — — — — — — — —
21 2012 11 7 18 61.1% 10 9 19 52.6% 1 3 4 25.0% — — — — 2003 3 6 9 33.3% 11 11 22 50.0% 0 1 1 0.0% 0 1 1 0.0%
22 2013 6 10 16 37.5% 3 5 8 37.5% 1 2 3 33.3% — — — — 2004 8 12 20 40.0% 13 9 22 59.1% 5 2 7 71.4% — — — —
23 2014 6 8 14 42.9% 7 6 13 53.8% 1 1 2 50.0% — — — — 2005 16 11 27 59.3% 11 6 17 64.7% 5 1 6 83.3% 0 1 1 0.0%
24 2015 15 11 26 57.7% 13 6 19 68.4% 2 3 5 40.0% — — — — 2006 4 11 15 26.7% 4 7 11 36.4% 1 3 4 25.0% 1 1 2 50.0%
25 2016 11 12 23 47.8% 13 5 18 72.2% 1 3 4 25.0% — — — — 2007 5 7 12 41.7% 7 5 12 58.3% — — — — — — — —
26 2017 6 14 20 30.0% 13 7 20 65.0% 1 1 2 50.0% — — — — 2008 6 9 15 40.0% 15 10 25 60.0% 0 2 2 0.0% 0 1 1 0.0%
27 2018 10 16 26 38.5% 9 7 16 56.3% 0 2 2 0.0% — — — — 2009 1 7 8 12.5% 7 9 16 43.8% 0 1 1 0.0% — — — —
28 2019 6 9 15 40.0% 5 6 11 45.5% — — — — — — — — 2010 12 11 23 52.2% 5 8 13 38.5% 3 1 4 75.0% — — — —
29 2020 0 4 4 0.0% 5 4 9 55.6% — — — — — — — — 2011 16 15 31 51.6% 10 7 17 58.8% 2 2 4 50.0% 1 1 2 50.0%
30 2021 14 10 24 58.3% 1 4 5 20.0% 2 1 3 66.7% — — — — 2012 8 12 20 40.0% 8 6 14 57.1% 5 3 8 62.5% 3 1 4 75.0%
31 2022 10 9 19 52.6% 13 5 18 72.2% 2 1 3 66.7% — — — — 2013 17 16 33 51.5% 7 6 13 53.8% 2 2 4 50.0% 1 1 2 50.0%
32 2023 5 8 13 38.5% 7 4 11 63.6% 1 1 2 50.0% — — — — 2014 18 17 35 51.4% 4 6 10 40.0% 6 3 9 66.7% 1 1 2 50.0%
33 2024 1 2 3 33.3% 9 5 14 64.3% 0 1 1 0.0% — — — — 2015 5 14 19 26.3% 6 5 11 54.5% 3 3 6 50.0% — — — —
34 2025 1 4 5 20.0% 5 4 9 55.6% 1 1 2 50.0% — — — — 2016 0 4 4 0.0% — — — — — — — — — — — —
35 2026 — — — — 0 1 1 0.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
Career — 107 129 236 45.3% 124 85 209 59.3% 14 23 37 37.8% — — — — — 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 446/482 of Irina-Camelia Begu'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 Irina-Camelia Begu 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%
18 2009 1/1 1.0 6.0 65.5% 50.0% 43.6% 50.0% 62.5% 47.8% 44.3% — —/— — — — — — — — — —
19 2010 1/1 0.0 4.0 69.8% 56.7% 15.4% 28.6% 0.0% 44.2% 28.6% — —/— — — — — — — — — —
20 2011 25/27 2.4 3.8 59.5% 61.9% 44.4% 50.6% 45.4% 54.7% 45.7% — —/— — — — — — — — — —
21 2012 37/41 2.2 3.4 66.2% 59.6% 45.3% 48.2% 50.8% 55.0% 43.8% — —/— — — — — — — — — —
22 2013 25/27 1.8 5.3 61.0% 58.2% 38.3% 51.4% 46.8% 50.4% 43.5% — —/— — — — — — — — — —
23 2014 27/29 2.5 3.3 62.7% 62.2% 46.4% 48.9% 47.6% 56.1% 43.1% — —/— — — — — — — — — —
24 2015 38/50 2.7 3.8 65.1% 64.1% 50.2% 52.0% 58.6% 59.1% 42.3% — —/— — — — — — — — — —
25 2016 42/45 3.6 4.4 61.2% 63.7% 45.3% 54.4% 49.3% 56.6% 43.1% — —/— — — — — — — — — —
26 2017 41/42 2.2 4.6 63.5% 61.6% 46.0% 54.5% 52.8% 55.8% 44.4% — —/— — — — — — — — — —
27 2018 43/44 1.8 4.5 63.4% 59.3% 42.0% 50.4% 50.5% 53.0% 42.8% — —/— — — — — — — — — —
28 2019 26/26 1.7 4.3 63.2% 61.8% 47.1% 46.3% 53.2% 56.5% 44.4% — —/— — — — — — — — — —
29 2020 13/13 1.3 4.0 67.6% 58.9% 45.8% 46.5% 47.1% 54.9% 40.5% — —/— — — — — — — — — —
30 2021 32/32 2.8 3.8 64.2% 63.9% 43.4% 50.0% 42.1% 56.6% 42.4% — —/— — — — — — — — — —
31 2022 39/40 3.3 4.6 64.0% 66.2% 46.4% 49.0% 43.8% 59.0% 43.5% — —/— — — — — — — — — —
32 2023 26/26 2.6 4.2 65.6% 63.6% 45.5% 55.2% 48.0% 57.3% 43.6% 2014 31/56 1.8 5.0 55.4% 61.0% 41.7% 47.6% 48.1% 51.9% 43.5%
33 2024 17/18 1.8 2.7 67.5% 63.9% 46.2% 59.5% 51.3% 58.6% 45.2% 2015 31/36 0.7 5.5 55.6% 60.9% 46.7% 43.3% 48.1% 54.4% 42.6%
34 2025 9/16 1.7 4.2 62.5% 59.1% 43.6% 41.9% 49.2% 53.2% 39.9% 2016 4/4 0.3 7.3 56.6% 57.9% 44.2% 56.5% 65.5% 52.2% 36.5%
35 2026 4/4 2.8 3.0 69.3% 53.1% 38.8% 33.0% 35.4% 48.9% 34.0% — —/— — — — — — — — — —
Career — 446/482 2.4 4.1 63.7% 62.0% 45.0% 50.8% 49.2% 55.9% 43.3% — 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 Irina-Camelia Begu 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 2009 1493 101.8 +1.68 +0.59 0.849 46.4% — — — 33.3% -1.67 0–1 — — -0.17 — — — — — — — — — — — — — — — —
19 2010 1486 95.9 -0.38 -2.74 0.512 36.5% — — — 0.0% -5.00 — — — -0.01 2001 1520 104.0 — — — — — +55 — 47.8% +0.26 4–1 (80%) 0–1 — +1.03
20 2011 1657 128.9 +0.21 +1.84 1.010 50.2% -80 +48 — 61.4% +0.35 2–3 (40%) 1–1 — -1.11 2002 1527 105.4 — — — — — +71 — 50.0% -0.42 2–4 (33%) 1–0 — +0.68
21 2012 1729 124.4 -0.08 -0.14 0.972 49.4% -44 -4 -163 50.5% -0.14 8–5 (62%) 6–5 (55%) 105.0 -1.47 2003 1537 119.8 — — — — -60 +108 — 44.4% -0.35 7–8 (47%) 1–3 (25%) 99.1 +0.56
22 2013 1559 109.9 -4.05 -1.09 0.877 47.2% +38 +77 -50 39.3% -0.64 4–2 (67%) 2–2 (50%) 101.9 +0.92 2004 1612 117.6 — — — — -110 +85 +30 49.5% -0.07 8–7 (53%) 6–4 (60%) 103.5 +0.67
23 2014 1617 119.9 -0.25 -1.13 0.983 49.6% -23 +30 — 53.0% +0.03 5–7 (42%) 5–6 (45%) 99.1 +1.11 2005 1764 126.4 — — — — -90 +7 -18 55.5% +0.09 15–4 (79%) 9–2 (82%) 118.0 +1.13
24 2015 1698 131.5 +1.34 +0.89 1.034 50.9% -37 +30 -116 57.4% +0.44 9–10 (47%) 8–8 (50%) 100.3 +2.64 2006 1547 107.1 — — — — +14 +77 +135 37.0% -1.05 2–7 (22%) 3–3 (50%) 92.0 +0.20
25 2016 1682 126.6 +0.58 +0.63 0.991 50.0% -72 +175 -137 52.4% 0.00 14–6 (70%) 7–2 (78%) 107.7 +0.64 2007 1579 115.5 — — — — -13 +59 — 50.0% +0.06 3–5 (38%) 3–4 (43%) 98.3 +0.21
26 2017 1664 128.6 -0.38 +1.07 1.004 49.9% -89 +195 — 47.0% -0.15 9–7 (56%) 3–5 (38%) 99.2 +1.03 2008 1574 111.3 — — — — -45 +84 — 48.5% -0.08 10–9 (53%) 3–5 (38%) 100.5 +0.48
27 2018 1593 124.2 -2.95 -0.51 0.911 48.0% -36 +204 — 43.9% -0.57 7–5 (58%) 2–3 (40%) 102.2 +0.57 2009 1534 110.3 — — — — -72 +97 — 35.0% -0.95 5–5 (50%) 4–5 (44%) 100.5 -0.40
28 2019 1560 121.8 -0.13 +0.23 1.021 50.4% -4 +132 — 45.0% -0.18 3–7 (30%) 3–5 (38%) 95.8 +0.93 2010 1657 126.4 — — — — -49 -66 +4 46.2% -0.20 10–5 (67%) 5–6 (45%) 106.2 +0.89
29 2020 1712 131.3 +0.09 -0.90 0.898 47.5% -48 +81 — 34.5% -0.65 3–0 (100%) 1–2 (33%) — -0.92 2011 1713 131.7 — — — — -15 -60 -54 50.4% -0.03 13–6 (68%) 7–4 (64%) 109.2 +0.80
30 2021 1739 138.8 +0.20 -0.34 0.975 49.3% +5 -16 -180 50.7% +0.12 6–3 (67%) 7–9 (44%) 102.9 -1.63 2012 1721 128.0 — — — — -45 -9 -3 51.0% +0.17 10–6 (63%) 5–7 (42%) 103.3 -0.68
31 2022 1832 139.8 +1.77 +0.58 1.060 51.1% -93 +130 -232 58.5% +0.44 9–7 (56%) 5–4 (56%) 101.6 +0.25 2013 1676 139.6 — — — — -9 +65 +31 51.7% +0.15 9–9 (50%) 6–9 (40%) 95.7 -1.87
32 2023 1777 132.8 +0.02 +1.18 1.021 50.3% -86 +140 — 50.8% -0.05 3–4 (43%) 3–1 (75%) 99.8 +0.24 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 2024 1803 131.2 +1.25 +2.03 1.090 51.8% -132 +166 — 52.6% 0.00 2–2 (50%) 2–2 (50%) 99.2 +0.10 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 2025 1758 125.4 -2.22 -2.60 0.853 46.5% -101 +159 — 45.0% -0.43 4–4 (50%) 2–0 — +0.64 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 2026 1726 103.3 -3.12 -1.52 0.666 41.4% — — -74 22.2% -2.11 1–0 1–0 — +0.43 — — — — — — — — — — — — — — — —
Career — 1883 134.3 -0.24 +0.24 0.980 49.5% -45 +108 -136 50.1% -0.07 89–73 (55%) 58–55 (51%) 104.7 +0.87 — 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.