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

Simona Halep vs Klara Koukalova H2H: 2-0

Simona Halep holds a 2–0 lead over Klara Koukalova in their WTA head-to-head. Across 2 main-draw meetings, Simona Halep leads 1–0 on grass and 1–0 on hard courts. Most recently, Simona Halep won the 2015 Birmingham round of 16 6-1 6-3.

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Simona Halep
ROU Age 34 Right-Handed 168 cm / 5'6"
H2H
2 – 0
2 main-draw meetings
Klara Koukalova
CZE Age 44 Right-Handed 166 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Simona Halep #3 6-1 6-3 Klara Koukalova #92 Match data Jun 19, 2015* R16 Birmingham Premier → modern equivalent WTA 500 Grass
Simona Halep #57 4-6 6-2 7-5 Klara Koukalova #42 Match data Jan 12, 2012* R32 Hobart International International → 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
Simona Halep #873 #1 8,290 2,120 449 201 69.1% 2 9 1 3 9 24
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 Simona Halep Klara Koukalova
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
18 2010 7–9 43.8% #84 1,552 0 0 — — — — — — —
19 2011 16–22 42.1% #47 1,591 0 0 2001 5–4 55.6% #139 1,519 0 0
20 2012 23–24 48.9% #47 1,691 0 0 2002 4–5 44.4% #117 1,527 0 0
21 2013 50–17 74.6% #11 2,003 0 6 2003 14–19 42.4% #63 1,537 0 0
22 2014 46–18 71.9% #3 1,995 0 8 2004 26–23 53.1% #46 1,611 0 0
23 2015 49–16 75.4% #2 1,934 0 11 2005 32–19 62.7% #35 1,764 0 2
24 2016 43–16 72.9% #4 1,980 0 14 2006 10–22 31.2% #117 1,546 0 2
25 2017 45–18 71.4% #1 1,988 0 15 2007 12–12 50.0% #63 1,578 0 2
26 2018 45–12 78.9% #1 2,013 1 18 2008 21–22 48.8% #72 1,574 0 2
27 2019 39–17 69.6% #4 1,942 2 19 2009 8–17 32.0% #90 1,533 0 2
28 2020 23–3 88.5% #2 2,060 2 22 2010 20–20 50.0% #41 1,656 0 2
29 2021 24–13 64.9% #20 2,002 2 22 2011 29–25 53.7% #41 1,713 0 2
30 2022 39–13 75.0% #10 2,030 2 24 2012 24–22 52.2% #28 1,721 0 2
31 — — — — — — — 2013 27–25 51.9% #35 1,675 0 2
32 2024 0–2 0.0% #873 1,953 2 24 2014 29–27 51.8% #40 1,611 0 3
33 2025 0–1 0.0% — 1,926 2 24 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 Simona Halep 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 2010 0 3 3 0.0% 7 6 13 53.8% — — — — — — — — — — — — — — — — — — — — — — — — —
19 2011 10 12 22 45.5% 5 8 13 38.5% 1 2 3 33.3% — — — — 2001 — — — — 5 3 8 62.5% — — — — 0 1 1 0.0%
20 2012 14 14 28 50.0% 9 6 15 60.0% 0 3 3 0.0% 0 1 1 0.0% 2002 0 2 2 0.0% 4 3 7 57.1% — — — — — — — —
21 2013 28 10 38 73.7% 16 5 21 76.2% 6 1 7 85.7% 0 1 1 0.0% 2003 3 6 9 33.3% 11 11 22 50.0% 0 1 1 0.0% 0 1 1 0.0%
22 2014 23 11 34 67.6% 17 4 21 81.0% 6 2 8 75.0% 0 1 1 0.0% 2004 8 12 20 40.0% 13 9 22 59.1% 5 2 7 71.4% — — — —
23 2015 41 10 51 80.4% 6 4 10 60.0% 2 2 4 50.0% — — — — 2005 16 11 27 59.3% 11 6 17 64.7% 5 1 6 83.3% 0 1 1 0.0%
24 2016 25 12 37 67.6% 14 3 17 82.4% 4 1 5 80.0% — — — — 2006 4 11 15 26.7% 4 7 11 36.4% 1 3 4 25.0% 1 1 2 50.0%
25 2017 21 13 34 61.8% 18 3 21 85.7% 6 2 8 75.0% — — — — 2007 5 7 12 41.7% 7 5 12 58.3% — — — — — — — —
26 2018 28 8 36 77.8% 15 3 18 83.3% 2 1 3 66.7% — — — — 2008 6 9 15 40.0% 15 10 25 60.0% 0 2 2 0.0% 0 1 1 0.0%
27 2019 21 13 34 61.8% 9 3 12 75.0% 9 1 10 90.0% — — — — 2009 1 7 8 12.5% 7 9 16 43.8% 0 1 1 0.0% — — — —
28 2020 10 2 12 83.3% 13 1 14 92.9% — — — — — — — — 2010 12 11 23 52.2% 5 8 13 38.5% 3 1 4 75.0% — — — —
29 2021 20 10 30 66.7% 4 3 7 57.1% — — — — — — — — 2011 16 15 31 51.6% 10 7 17 58.8% 2 2 4 50.0% 1 1 2 50.0%
30 2022 23 7 30 76.7% 5 3 8 62.5% 11 3 14 78.6% — — — — 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 2024 0 2 2 0.0% — — — — — — — — — — — — 2014 18 17 35 51.4% 4 6 10 40.0% 6 3 9 66.7% 1 1 2 50.0%
33 2025 0 1 1 0.0% — — — — — — — — — — — — 2015 5 14 19 26.3% 6 5 11 54.5% 3 3 6 50.0% — — — —
34 — — — — — — — — — — — — — — — — — 2016 0 4 4 0.0% — — — — — — — — — — — —
Career — 264 128 392 67.3% 138 52 190 72.6% 47 18 65 72.3% 0 3 3 0.0% — 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 575/649 of Simona Halep'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 Simona Halep 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 2010 14/16 2.1 3.6 61.8% 57.8% 51.1% 56.0% 57.5% 55.3% 46.1% — —/— — — — — — — — — —
19 2011 35/38 1.5 4.1 62.3% 60.2% 43.3% 47.7% 49.8% 53.8% 43.5% — —/— — — — — — — — — —
20 2012 42/47 1.1 3.2 66.2% 57.6% 45.9% 52.4% 51.2% 53.5% 44.3% — —/— — — — — — — — — —
21 2013 57/67 1.9 3.0 66.6% 63.1% 48.5% 55.7% 59.5% 58.3% 49.4% — —/— — — — — — — — — —
22 2014 53/64 2.4 3.2 60.5% 66.8% 50.7% 54.1% 56.9% 60.4% 48.8% — —/— — — — — — — — — —
23 2015 48/65 2.2 3.5 66.3% 66.5% 51.9% 52.0% 53.6% 61.4% 47.1% — —/— — — — — — — — — —
24 2016 51/59 1.8 2.0 66.5% 64.3% 51.4% 48.5% 54.4% 60.0% 51.1% — —/— — — — — — — — — —
25 2017 58/63 1.5 2.3 68.2% 64.3% 48.2% 58.8% 50.3% 59.2% 48.0% — —/— — — — — — — — — —
26 2018 55/57 2.0 2.6 65.6% 64.8% 48.3% 50.1% 54.4% 59.2% 50.2% — —/— — — — — — — — — —
27 2019 52/56 1.6 2.5 69.2% 63.9% 48.6% 52.0% 53.8% 59.5% 49.3% — —/— — — — — — — — — —
28 2020 26/26 2.1 2.9 69.2% 66.6% 45.2% 58.2% 56.0% 60.0% 51.0% — —/— — — — — — — — — —
29 2021 34/37 2.5 2.6 65.5% 66.5% 49.0% 62.5% 51.7% 60.4% 47.9% — —/— — — — — — — — — —
30 2022 48/52 2.7 3.3 61.9% 70.5% 49.9% 57.7% 56.3% 62.6% 50.0% — —/— — — — — — — — — —
32 2024 2/2 3.5 5.5 62.1% 64.2% 38.2% 63.6% 65.0% 54.4% 36.8% 2014 31/56 1.8 5.0 55.4% 61.0% 41.7% 47.6% 48.1% 51.9% 43.5%
33 — —/— — — — — — — — — — 2015 31/36 0.7 5.5 55.6% 60.9% 46.7% 43.3% 48.1% 54.4% 42.6%
34 — —/— — — — — — — — — — 2016 4/4 0.3 7.3 56.6% 57.9% 44.2% 56.5% 65.5% 52.2% 36.5%
Career — 575/650 2.0 2.9 65.5% 64.5% 48.7% 54.0% 54.3% 59.0% 48.4% — 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 Simona Halep 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 2010 1552 129.6 0.00 +1.23 1.032 50.6% -45 +75 — 51.5% +0.21 0–3 (0%) 2–2 (50%) 97.4 -1.14 — — — — — — — — — — — — — — — —
19 2011 1591 119.2 -1.38 -0.51 0.942 48.7% -11 -33 +7 42.9% -0.57 4–6 (40%) 4–5 (44%) 99.6 -1.08 2001 1520 104.0 — — — — — +55 — 47.8% +0.26 4–1 (80%) 0–1 — +1.03
20 2012 1692 138.7 -0.77 +1.06 0.953 49.0% -14 +1 -148 46.4% -0.43 6–3 (67%) 3–5 (38%) 103.4 -2.97 2002 1527 105.4 — — — — — +71 — 50.0% -0.42 2–4 (33%) 1–0 — +0.68
21 2013 2004 156.1 +2.96 +5.04 1.187 53.8% -37 -132 -335 68.5% +1.57 16–4 (80%) 4–8 (33%) 108.5 -1.35 2003 1537 119.8 — — — — -60 +108 — 44.4% -0.35 7–8 (47%) 1–3 (25%) 99.1 +0.56
22 2014 1995 160.2 +4.78 +5.18 1.233 54.4% -39 +30 -224 71.0% +1.79 12–6 (67%) 5–7 (42%) 99.5 -0.24 2004 1612 117.6 — — — — -110 +85 +30 49.5% -0.07 8–7 (53%) 6–4 (60%) 103.5 +0.67
23 2015 1935 159.6 +3.29 +5.15 1.221 54.1% +59 +10 -196 69.9% +1.42 15–6 (71%) 2–5 (29%) 100.7 +1.13 2005 1764 126.4 — — — — -90 +7 -18 55.5% +0.09 15–4 (79%) 9–2 (82%) 118.0 +1.13
24 2016 1980 160.5 +3.61 +7.88 1.277 55.4% -3 +44 -186 68.0% +1.42 9–5 (64%) 3–7 (30%) 97.1 -0.14 2006 1547 107.1 — — — — +14 +77 +135 37.0% -1.05 2–7 (22%) 3–3 (50%) 92.0 +0.20
25 2017 1988 158.5 +3.09 +5.20 1.176 53.5% -32 +153 -98 67.6% +1.18 13–8 (62%) 9–5 (64%) 102.4 -2.46 2007 1579 115.5 — — — — -13 +59 — 50.0% +0.06 3–5 (38%) 3–4 (43%) 98.3 +0.21
26 2018 2013 158.0 +2.58 +7.16 1.230 54.5% -33 +166 -139 71.9% +1.61 15–4 (79%) 4–4 (50%) 103.5 +0.15 2008 1574 111.3 — — — — -45 +84 — 48.5% -0.08 10–9 (53%) 3–5 (38%) 100.5 +0.48
27 2019 1942 158.9 +3.03 +6.58 1.216 54.2% -38 +198 +94 66.7% +1.28 13–8 (62%) 8–4 (67%) 101.3 -0.27 2009 1534 110.3 — — — — -72 +97 — 35.0% -0.95 5–5 (50%) 4–5 (44%) 100.5 -0.40
28 2020 2060 156.1 +3.23 +6.77 1.275 55.4% -69 +148 — 78.6% +1.82 6–0 (100%) 5–1 (83%) 107.1 -0.67 2010 1657 126.4 — — — — -49 -66 +4 46.2% -0.20 10–5 (67%) 5–6 (45%) 106.2 +0.89
29 2021 2002 155.1 +3.53 +4.37 1.207 54.0% +7 +165 — 67.6% +1.45 6–2 (75%) 4–0 (100%) 105.0 -0.60 2011 1713 131.7 — — — — -15 -60 -54 50.4% -0.03 13–6 (68%) 7–4 (64%) 109.2 +0.80
30 2022 2031 152.9 +5.00 +6.61 1.339 56.0% +4 +66 +191 75.5% +1.85 7–5 (58%) 1–3 (25%) 95.1 +0.32 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 2024 1953 108.2 0.00 +0.37 0.808 46.3% — — — 20.0% -1.20 0–1 — — -0.18 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 2025 1926 95.9 — — — — — — — 0.0% -5.00 — — — 0.00 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 — 2120 160.6 +2.79 +5.10 1.182 53.6% -12 +61 -59 66.1% +1.21 122–61 (67%) 54–56 (49%) 102.1 -1.49 — 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.