H2H data updated: 2026-07-18 17:48 UTC

Serena Williams vs Klara Koukalova H2H: 3-2

Serena Williams holds a 3–2 lead over Klara Koukalova in their WTA head-to-head. Across 5 main-draw meetings, Serena Williams leads 3–2 on clay. Most recently, Klara Koukalova won the 2015 Bastad fourth round W/O.

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

Serena Williams

USA Age 44 Right-Handed 175 cm / 5'9"

H2H

3 – 2

5 main draw meetings

Klara Koukalova

CZE Age 44 Right-Handed 166 cm / 5'5"

H2H Match Log

Date	Tournament	Category	Round	Surface	Winner	Score	Loser	Match
Jul 17, 2015*	Bastad	WTA 250	R16	Clay	Klara Koukalova #105	(w/o)	Serena Williams #1	Match data
Jul 20, 2013*	Bastad	WTA 250	SF	Clay	Serena Williams #1	6-0 6-4	Klara Koukalova #37	Match data
May 26, 2009*	Roland Garros	Grand Slam	R128	Clay	Serena Williams #2	6-3 6-7(5) 6-4	Klara Koukalova #100	Match data
Apr 9, 2009*	Marbella	WTA 250	R32	Clay	Klara Koukalova #95	6-4 3-6 6-1	Serena Williams #1	Match data
May 15, 2003*	Rome	WTA 1000	R32	Clay	Serena Williams #1	6-4 6-3	Klara Koukalova #72	Match data

* Estimated match date where the exact historical date is unavailable.

Career Comparison

Player	Current	Peak	Pts	Elo	W	L	Win %	GS	1000	Finals	500	250	Titles
Serena Williams	#320	#1	13,615	2,405	825	170	82.9%	23	23	5	17	3	71
Klara Koukalova	#566	#20	1,860	1,807	275	285	49.1%	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	Serena Williams							Klara Koukalova
Age	Yr	W-L	Win %	Rank	Elo	GS	Titles	Yr	W-L	Win %	Rank	Elo	GS	Titles
15	1997	3–2	60.0%	#101	1,582	0	0	—	—	—	—	—	—	—
16	1998	26–11	70.3%	#20	1,895	0	0	—	—	—	—	—	—	—
17	1999	37–7	84.1%	#4	2,170	1	4	—	—	—	—	—	—	—
18	2000	37–8	82.2%	#6	2,174	1	7	—	—	—	—	—	—	—
19	2001	40–7	85.1%	#6	2,259	1	10	2001	5–4	55.6%	#139	1,519	0	0
20	2002	57–5	91.9%	#1	2,348	4	18	2002	4–5	44.4%	#117	1,527	0	0
21	2003	36–3	92.3%	#3	2,369	6	22	2003	14–19	42.4%	#63	1,537	0	0
22	2004	39–11	78.0%	#7	2,192	6	24	2004	26–22	54.2%	#46	1,648	0	0
23	2005	21–9	70.0%	#11	2,028	7	25	2005	32–19	62.7%	#35	1,770	0	2
24	2006	12–4	75.0%	#95	2,016	7	25	2006	10–22	31.2%	#117	1,548	0	2
25	2007	34–10	77.3%	#7	2,058	8	27	2007	12–12	50.0%	#63	1,579	0	2
26	2008	41–8	83.7%	#2	2,109	9	31	2008	21–21	50.0%	#72	1,590	0	2
27	2009	50–13	79.4%	#1	2,106	11	34	2009	8–17	32.0%	#90	1,537	0	2
28	2010	25–4	86.2%	#4	2,149	13	36	2010	20–20	50.0%	#41	1,656	0	2
29	2011	22–4	84.6%	#12	2,155	13	38	2011	29–25	53.7%	#41	1,712	0	2
30	2012	48–6	88.9%	#3	2,239	15	44	2012	24–21	53.3%	#28	1,729	0	2
31	2013	77–5	93.9%	#1	2,345	17	55	2013	27–25	51.9%	#35	1,679	0	2
32	2014	52–10	83.9%	#1	2,209	18	62	2014	29–27	51.8%	#40	1,611	0	3
33	2015	50–6	89.3%	#1	2,197	21	67	2015	14–22	38.9%	#99	1,572	0	3
34	2016	36–5	87.8%	#2	2,177	22	69	2016	0–4	0.0%	#400	1,499	0	3
35	2017	8–1	88.9%	#22	2,172	23	70	—	—	—	—	—	—	—
36	2018	18–7	72.0%	#16	2,078	23	70	—	—	—	—	—	—	—
37	2019	25–8	75.8%	#10	2,052	23	70	—	—	—	—	—	—	—
38	2020	16–5	76.2%	#11	1,991	23	71	—	—	—	—	—	—	—
39	2021	12–6	66.7%	#41	1,950	23	71	—	—	—	—	—	—	—
40	2022	3–4	42.9%	#320	1,891	23	71	—	—	—	—	—	—	—
44	2026	0–1	0.0%	#320	—	23	71	—	—	—	—	—	—	—