H2H data updated: 2026-09-14 00:00 UTC

Klara Koukalova vs Jelena Kostanic Tosic H2H: 2-0 (incl. walkovers)

Klara Koukalova vs Jelena Kostanic Tosic: 1–0 excluding walkovers; 2–0 including 1 walkover. Across 2 main-draw results including walkovers, Klara Koukalova leads 2–0 on clay. Most recently, Klara Koukalova won the 2008 Vina Del Mar round of 16 W/O.

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Klara Koukalova
Czech Republic Age 44 Right-Handed 166 cm / 5'5"
H2H including walkovers
2 – 0
2 main-draw results
Jelena Kostanic Tosic
CRO Age 45 Left-Handed 168 cm / 5'6"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Klara Koukalova #68 (w/o) Jelena Kostanic Tosic #143 Match data Feb 15, 2008* R16 Vina Del Mar Tier III → modern equivalent WTA 250 Clay
Klara Koukalova #76 6-1 6-0 Jelena Kostanic Tosic #116 Match data Aug 2, 2003* QF Sopot 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
Jelena Kostanic Tosic #937 #32 900 1,709 112 152 42.4% 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 Jelena Kostanic Tosic
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1998 1–2 33.3% #240 1,490 0 0
17 — — — — — — — 1999 4–5 44.4% #97 1,512 0 0
18 — — — — — — — 2000 10–13 43.5% #114 1,523 0 0
19 2001 5–4 55.6% #139 1,519 0 0 2001 4–4 50.0% #131 1,559 0 0
20 2002 4–5 44.4% #117 1,527 0 0 2002 14–17 45.2% #70 1,571 0 0
21 2003 14–19 42.4% #63 1,537 0 0 2003 16–20 44.4% #66 1,621 0 0
22 2004 26–23 53.1% #46 1,611 0 0 2004 22–26 45.8% #35 1,665 0 0
23 2005 32–19 62.7% #35 1,764 0 2 2005 11–21 34.4% #87 1,546 0 0
24 2006 10–22 31.2% #117 1,546 0 2 2006 19–18 51.4% #51 1,576 0 0
25 2007 12–12 50.0% #63 1,578 0 2 2007 10–17 37.0% #103 1,534 0 0
26 2008 21–22 48.8% #72 1,574 0 2 2008 1–5 16.7% #114 1,512 0 0
27 2009 8–17 32.0% #90 1,533 0 2 — — — — — — —
28 2010 20–20 50.0% #41 1,656 0 2 2010 0–4 0.0% #830 1,472 0 0
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 Jelena Kostanic Tosic
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 %
16 — — — — — — — — — — — — — — — — — 1998 — — — — 1 2 3 33.3% — — — — — — — —
17 — — — — — — — — — — — — — — — — — 1999 1 2 3 33.3% 2 2 4 50.0% — — — — 1 1 2 50.0%
18 — — — — — — — — — — — — — — — — — 2000 4 3 7 57.1% 6 7 13 46.2% 0 2 2 0.0% 0 1 1 0.0%
19 2001 — — — — 5 3 8 62.5% — — — — 0 1 1 0.0% 2001 0 2 2 0.0% 4 2 6 66.7% — — — — — — — —
20 2002 0 2 2 0.0% 4 3 7 57.1% — — — — — — — — 2002 7 8 15 46.7% 7 8 15 46.7% 0 1 1 0.0% — — — —
21 2003 3 6 9 33.3% 11 11 22 50.0% 0 1 1 0.0% 0 1 1 0.0% 2003 6 9 15 40.0% 9 8 17 52.9% 0 1 1 0.0% 1 2 3 33.3%
22 2004 8 12 20 40.0% 13 9 22 59.1% 5 2 7 71.4% — — — — 2004 11 18 29 37.9% 11 6 17 64.7% 0 2 2 0.0% — — — —
23 2005 16 11 27 59.3% 11 6 17 64.7% 5 1 6 83.3% 0 1 1 0.0% 2005 2 10 12 16.7% 9 8 17 52.9% 0 2 2 0.0% 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% 2006 18 14 32 56.3% 0 2 2 0.0% 1 2 3 33.3% — — — —
25 2007 5 7 12 41.7% 7 5 12 58.3% — — — — — — — — 2007 9 11 20 45.0% 1 5 6 16.7% 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% 2008 0 2 2 0.0% 1 3 4 25.0% — — — — — — — —
27 2009 1 7 8 12.5% 7 9 16 43.8% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
28 2010 12 11 23 52.2% 5 8 13 38.5% 3 1 4 75.0% — — — — 2010 0 2 2 0.0% 0 2 2 0.0% — — — — — — — —
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% — 58 81 139 41.7% 51 55 106 48.1% 1 11 12 8.3% 2 5 7 28.6%

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 Jelena Kostanic Tosic
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
16 — — — — — — — — — — — — — — — — 1998 1491 103.8 — — — — — +41 — 42.9% +0.43 0–1 0–1 — +0.18
17 — — — — — — — — — — — — — — — — 1999 1512 116.4 — — — — +24 +37 — 45.5% -0.14 2–2 (50%) 0–1 — +0.26
18 — — — — — — — — — — — — — — — — 2000 1524 108.3 — — — — +37 +30 — 42.0% -0.68 3–1 (75%) 3–1 (75%) 105.1 +0.85
19 2001 1520 104.0 — — — — — +55 — 47.8% +0.26 4–1 (80%) 0–1 — +1.03 2001 1560 116.2 — — — — — +73 — 47.1% +0.18 1–2 (33%) 2–1 (67%) 101.0 -0.13
20 2002 1527 105.4 — — — — — +71 — 50.0% -0.42 2–4 (33%) 1–0 — +0.68 2002 1571 111.3 — — — — -20 +34 — 42.5% -0.31 8–3 (73%) 2–5 (29%) 105.9 +0.28
21 2003 1537 119.8 — — — — -60 +108 — 44.4% -0.35 7–8 (47%) 1–3 (25%) 99.1 +0.56 2003 1622 120.1 -1.74 -2.49 0.739 43.5% -56 +59 — 45.1% -0.46 5–5 (50%) 3–6 (33%) 97.7 -0.06
22 2004 1612 117.6 — — — — -110 +85 +30 49.5% -0.07 8–7 (53%) 6–4 (60%) 103.5 +0.67 2004 1666 129.7 -1.40 -1.09 0.823 45.7% -81 +96 — 45.4% -0.19 9–7 (56%) 6–5 (55%) 105.6 -0.69
23 2005 1764 126.4 — — — — -90 +7 -18 55.5% +0.09 15–4 (79%) 9–2 (82%) 118.0 +1.13 2005 1547 120.0 -0.58 -1.27 0.864 46.7% -47 +195 — 37.0% -0.73 4–5 (44%) 3–3 (50%) 99.4 +0.09
24 2006 1547 107.1 — — — — +14 +77 +135 37.0% -1.05 2–7 (22%) 3–3 (50%) 92.0 +0.20 2006 1577 119.3 -2.62 -2.72 0.804 45.9% +30 — -175 50.6% -0.05 6–5 (55%) 3–2 (60%) 100.9 +1.44
25 2007 1579 115.5 — — — — -13 +59 — 50.0% +0.06 3–5 (38%) 3–4 (43%) 98.3 +0.21 2007 1534 105.5 -0.32 -3.82 0.871 47.4% +40 +66 — 38.6% -1.12 3–2 (60%) 0–2 — -0.47
26 2008 1574 111.3 — — — — -45 +84 — 48.5% -0.08 10–9 (53%) 3–5 (38%) 100.5 +0.48 2008 1513 110.2 +2.02 -2.68 0.696 44.8% — +50 — 22.2% -1.78 1–0 2–0 — -0.46
27 2009 1534 110.3 — — — — -72 +97 — 35.0% -0.95 5–5 (50%) 4–5 (44%) 100.5 -0.40 — — — — — — — — — — — — — — — —
28 2010 1657 126.4 — — — — -49 -66 +4 46.2% -0.20 10–5 (67%) 5–6 (45%) 106.2 +0.89 2010 1472 103.1 -1.62 -2.01 0.660 40.8% — — — 0.0% -3.25 — — — -0.15
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 — 1710 121.9 -0.96 -2.67 0.809 45.8% -15 +80 -175 42.8% -0.47 42–33 (56%) 24–27 (47%) 105.1 +0.43

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.