H2H data updated: 2026-09-02 00:00 UTC

Ken Flach vs Michael Westphal H2H: 1-0

Ken Flach holds a 1–0 lead over Michael Westphal in their ATP head-to-head. Across 1 main-draw meeting, Ken Flach leads 1–0 on hard courts. Most recently, Ken Flach won the 1984 US Open round of 128 6-3 6-7 7-5 3-6 6-3.

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

Ken Flach

USA Right-Handed 185 cm / 6'1"

H2H

1 – 0

1 main draw meetings

Michael Westphal

GER Right-Handed 190 cm / 6'3"

H2H Match Log

Player	Score	Player	Match Data	Date	Round	Tournament	Category	Surface
Ken Flach #224	6-3 6-7 7-5 3-6 6-3	Michael Westphal #88	Match data	Aug 30, 1984*	R128	US Open	Grand Slam	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
Ken Flach	#815	#56	130	1,715	52	80	39.4%	0	0	0	0	0	0
Michael Westphal	#1,050	#49	81	1,755	73	97	42.9%	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	Ken Flach							Michael Westphal
Age	Yr	W-L	Win %	Rank	Elo	GS	Titles	Yr	W-L	Win %	Rank	Elo	GS	Titles
17	—	—	—	—	—	—	—	1982	4–6	40.0%	—	1,556	0	0
18	—	—	—	—	—	—	—	1983	7–9	43.8%	#96	1,569	0	0
19	1982	0–1	0.0%	—	1,498	0	0	1984	19–14	57.6%	#73	1,712	0	0
20	1983	2–3	40.0%	#314	1,521	0	0	1985	15–16	48.4%	#51	1,702	0	0
21	1984	7–6	53.8%	#155	1,599	0	0	1986	12–21	36.4%	#101	1,642	0	0
22	1985	12–12	50.0%	#60	1,676	0	0	1987	5–15	25.0%	#279	1,566	0	0
23	1986	4–15	21.1%	#223	1,557	0	0	1988	6–9	40.0%	#116	1,554	0	0
24	1987	10–13	43.5%	#100	1,621	0	0	1989	5–7	41.7%	#233	1,566	0	0
25	1988	7–12	36.8%	#203	1,618	0	0	—	—	—	—	—	—	—
26	1989	6–7	46.2%	#194	1,651	0	0	—	—	—	—	—	—	—
27	1990	3–6	33.3%	#222	1,611	0	0	—	—	—	—	—	—	—
28	1991	0–2	0.0%	#572	1,575	0	0	—	—	—	—	—	—	—
29	1992	0–1	0.0%	#742	1,559	0	0	—	—	—	—	—	—	—
31	1994	1–1	50.0%	#514	1,575	0	0	—	—	—	—	—	—	—
32	1995	0–1	0.0%	#835	1,570	0	0	—	—	—	—	—	—	—

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	Ken Flach																	Michael Westphal
	Yr	Hard				Clay				Grass				Carpet				Yr	Hard				Clay				Grass				Carpet
	Yr	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	Yr	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %	W	L	M	Win %
17	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1982	4	3	7	57.1%	0	2	2	0.0%	—	—	—	—	0	1	1	0.0%
18	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1983	2	5	7	28.6%	5	4	9	55.6%	—	—	—	—	—	—	—	—
19	1982	—	—	—	—	0	1	1	0.0%	—	—	—	—	—	—	—	—	1984	10	7	17	58.8%	8	5	13	61.5%	0	1	1	0.0%	1	1	2	50.0%
20	1983	1	1	2	50.0%	0	1	1	0.0%	1	1	2	50.0%	—	—	—	—	1985	3	5	8	37.5%	12	10	22	54.5%	—	—	—	—	0	1	1	0.0%
21	1984	3	2	5	60.0%	—	—	—	—	3	3	6	50.0%	1	1	2	50.0%	1986	7	7	14	50.0%	2	11	13	15.4%	1	1	2	50.0%	2	2	4	50.0%
22	1985	10	8	18	55.6%	—	—	—	—	1	2	3	33.3%	1	2	3	33.3%	1987	4	9	13	30.8%	1	5	6	16.7%	0	1	1	0.0%	—	—	—	—
23	1986	2	6	8	25.0%	0	3	3	0.0%	2	2	4	50.0%	0	4	4	0.0%	1988	0	2	2	0.0%	5	6	11	45.5%	—	—	—	—	1	1	2	50.0%
24	1987	6	8	14	42.9%	—	—	—	—	4	4	8	50.0%	0	1	1	0.0%	1989	1	3	4	25.0%	3	2	5	60.0%	—	—	—	—	1	2	3	33.3%
25	1988	2	6	8	25.0%	0	1	1	0.0%	3	2	5	60.0%	2	3	5	40.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
26	1989	3	4	7	42.9%	—	—	—	—	2	1	3	66.7%	1	2	3	33.3%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
27	1990	2	4	6	33.3%	—	—	—	—	1	1	2	50.0%	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
28	1991	0	1	1	0.0%	—	—	—	—	—	—	—	—	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
29	1992	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
31	1994	1	1	2	50.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
32	1995	—	—	—	—	—	—	—	—	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Career	—	30	42	72	41.7%	0	6	6	0.0%	17	17	34	50.0%	5	15	20	25.0%	—	31	41	72	43.1%	36	45	81	44.4%	1	3	4	25.0%	5	8	13	38.5%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. 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	Ken Flach																Michael Westphal
Age	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
17	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1982	1557	126.4	—	—	—	—	+47	—	—	45.8%	-0.12	1–3 (25%)	1–0	—	-0.27
18	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1983	1570	120.2	—	—	—	—	-2	-3	—	48.8%	-0.12	3–6 (33%)	3–4 (43%)	—	+0.83
19	1982	1499	112.4	—	—	—	—	—	—	—	0.0%	-4.00	—	—	—	-0.28	1984	1712	143.7	—	—	—	—	-22	-44	—	56.6%	+0.41	4–5 (44%)	9–5 (64%)	—	-0.25
20	1983	1522	107.7	—	—	—	—	—	—	—	41.7%	-0.75	—	0–2	—	+0.25	1985	1703	130.1	—	—	—	—	-43	-9	—	46.8%	-0.66	8–6 (57%)	9–4 (69%)	—	-1.63
21	1984	1599	117.5	—	—	—	—	+21	—	-14	51.2%	-0.05	4–3 (57%)	2–4 (33%)	—	+0.63	1986	1642	120.8	—	—	—	—	+20	-45	—	37.8%	-0.96	6–5 (55%)	5–6 (45%)	—	-1.25
22	1985	1676	134.2	—	—	—	—	+19	—	-94	44.8%	-0.26	4–0 (100%)	4–2 (67%)	—	-0.49	1987	1566	126.7	—	—	—	—	+46	+3	—	32.7%	-1.06	1–4 (20%)	1–3 (25%)	—	-1.24
23	1986	1557	111.4	—	—	—	—	+7	-76	+56	29.4%	-1.16	2–4 (33%)	2–4 (33%)	—	-0.12	1988	1554	114.4	—	—	—	—	+23	+43	—	38.2%	-0.82	3–1 (75%)	1–4 (20%)	—	+0.39
24	1987	1622	115.8	—	—	—	—	-40	—	+10	48.6%	-0.39	2–5 (29%)	9–4 (69%)	—	+1.50	1989	1566	117.9	—	—	—	—	-15	+56	—	40.6%	-0.25	4–2 (67%)	2–5 (29%)	—	+0.38
25	1988	1618	116.8	—	—	—	—	-94	—	+56	42.1%	-0.67	4–5 (44%)	4–5 (44%)	—	-1.49	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
26	1989	1652	118.7	—	—	—	—	-87	—	+41	48.9%	-0.31	3–4 (43%)	7–5 (58%)	—	-0.04	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
27	1990	1612	118.0	—	—	—	—	-53	—	—	44.0%	-0.40	1–4 (20%)	2–1 (67%)	—	-0.05	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
28	1991	1576	100.1	-1.14	-2.20	0.974	48.8%	—	—	—	20.0%	-1.20	0–1	1–1	—	+0.27	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
29	1992	1559	98.8	-2.84	-0.85	0.759	44.2%	—	—	—	0.0%	-3.00	—	—	—	+0.08	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
31	1994	1576	112.6	-0.30	+1.03	0.724	46.6%	—	—	—	40.0%	-1.00	1–0	1–0	—	-0.06	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
32	1995	1571	105.1	+1.22	+5.29	0.983	49.9%	—	—	—	40.0%	0.00	0–1	0–1	—	-0.28	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Career	—	1715	126.9	-0.75	+0.35	0.851	47.5%	-29	-76	+12	43.2%	-0.53	21–27 (44%)	32–29 (52%)	100.9	-0.06	—	1755	134.6	—	—	—	—	+6	-8	—	44.3%	-0.46	30–32 (48%)	31–31 (50%)	100.8	-1.79

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.

Ken Flach's most-played ATP rivals
Opponent	W	L	M	Last Played	H2H
Peter Lundgren	0	3	3	Jul 15, 1992	H2H
John Sadri	3	0	3	Jun 26, 1987	H2H
Tim Mayotte	0	3	3	Aug 7, 1985	H2H
Vijay Amritraj	3	0	3	May 3, 1985	H2H
Terry Moor	1	2	3	May 2, 1985	H2H

Michael Westphal's most-played ATP rivals
Opponent	W	L	M	Last Played	H2H
Jan Gunnarsson	0	4	4	Nov 4, 1987	H2H
Jimmy Arias	2	2	4	Aug 13, 1987	H2H
Johan Kriek	0	4	4	Feb 7, 1986	H2H
Tomas Smid	1	3	4	Feb 6, 1986	H2H
Horst Skoff	1	2	3	May 13, 1989	H2H