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

Mary Lou Piatek vs Audra Keller H2H: 0-1

Audra Keller holds a 1–0 lead over Mary Lou Piatek in their WTA head-to-head. Across 1 main-draw meeting, Audra Keller leads 1–0 on clay. Most recently, Audra Keller won the 1991 Hilton Head round of 64 7-6 3-6 6-2.

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

Mary Lou Piatek

USA

H2H

0 – 1

1 main-draw meetings

Audra Keller

USA Age 54

H2H Match Log

Player	Score	Player	Match Data	Date	Round	Tournament	Category	Surface
Audra Keller #109	7-6 3-6 6-2	Mary Lou Piatek	Match data	Apr 3, 1991*	R64	Hilton Head	Tier I → modern equivalent WTA 1000	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
Mary Lou Piatek	—	—	—	1,931	153	206	42.6%	0	0	0	0	2	2
Audra Keller	#1,002	#77	44	1,645	42	88	32.3%	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.

Mary Lou Piatek							Audra Keller
Yr	W-L	Win %	Rank	Elo	GS	Titles	Yr	W-L	Win %	Rank	Elo	GS	Titles
1978	0–1	0.0%	—	1,499	0	0	1989	3–4	42.9%	#157	1,538	0	0
1979	3–5	37.5%	—	1,546	0	0	1990	13–18	41.9%	#98	1,610	0	0
1980	16–12	57.1%	—	1,734	0	0	1991	10–16	38.5%	#95	1,641	0	0
1981	30–22	57.7%	—	1,869	0	1	1992	3–15	16.7%	#249	1,522	0	0
1982	18–21	46.2%	—	1,791	0	1	1993	5–10	33.3%	#124	1,524	0	0
1983	12–20	37.5%	—	1,720	0	1	1994	4–13	23.5%	#161	1,471	0	0
1984	18–20	47.4%	—	1,703	0	2	1995	4–12	25.0%	#134	1,468	0	0
1985	14–18	43.8%	—	1,677	0	2	—	—	—	—	—	—	—
1986	8–15	34.8%	—	1,618	0	2	—	—	—	—	—	—	—
1987	6–12	33.3%	—	1,594	0	2	—	—	—	—	—	—	—
1988	6–16	27.3%	—	1,542	0	2	—	—	—	—	—	—	—
1989	7–15	31.8%	—	1,592	0	2	—	—	—	—	—	—	—
1990	8–11	42.1%	—	1,611	0	2	—	—	—	—	—	—	—
1991	5–8	38.5%	—	1,629	0	2	—	—	—	—	—	—	—
1992	1–8	11.1%	—	1,559	0	2	—	—	—	—	—	—	—
1993	1–2	33.3%	—	1,554	0	2	—	—	—	—	—	—	—

Surface Results by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Mary Lou Piatek																	Audra Keller
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 %
1978	—	—	—	—	—	—	—	—	—	—	—	—	0	1	1	0.0%	1989	2	3	5	40.0%	—	—	—	—	—	—	—	—	1	1	2	50.0%
1979	1	1	2	50.0%	0	1	1	0.0%	—	—	—	—	2	3	5	40.0%	1990	9	11	20	45.0%	3	4	7	42.9%	1	2	3	33.3%	0	1	1	0.0%
1980	5	3	8	62.5%	3	1	4	75.0%	0	2	2	0.0%	8	6	14	57.1%	1991	8	12	20	40.0%	1	3	4	25.0%	1	1	2	50.0%	—	—	—	—
1981	15	5	20	75.0%	6	4	10	60.0%	4	6	10	40.0%	5	7	12	41.7%	1992	1	8	9	11.1%	1	5	6	16.7%	1	1	2	50.0%	0	1	1	0.0%
1982	4	5	9	44.4%	0	3	3	0.0%	1	2	3	33.3%	13	11	24	54.2%	1993	4	7	11	36.4%	—	—	—	—	—	—	—	—	1	3	4	25.0%
1983	5	6	11	45.5%	1	4	5	20.0%	0	2	2	0.0%	6	8	14	42.9%	1994	3	8	11	27.3%	0	3	3	0.0%	—	—	—	—	1	2	3	33.3%
1984	9	8	17	52.9%	0	1	1	0.0%	5	6	11	45.5%	4	5	9	44.4%	1995	4	7	11	36.4%	0	3	3	0.0%	0	1	1	0.0%	0	1	1	0.0%
1985	7	11	18	38.9%	2	1	3	66.7%	1	2	3	33.3%	4	4	8	50.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1986	5	5	10	50.0%	0	2	2	0.0%	1	2	3	33.3%	2	6	8	25.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1987	3	5	8	37.5%	0	2	2	0.0%	0	2	2	0.0%	3	3	6	50.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1988	4	9	13	30.8%	1	4	5	20.0%	0	1	1	0.0%	1	2	3	33.3%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1989	7	9	16	43.8%	0	3	3	0.0%	0	2	2	0.0%	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1990	4	5	9	44.4%	3	3	6	50.0%	0	1	1	0.0%	1	2	3	33.3%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1991	5	5	10	50.0%	0	2	2	0.0%	—	—	—	—	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1992	0	6	6	0.0%	1	1	2	50.0%	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1993	1	2	3	33.3%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Career	75	85	160	46.9%	17	32	49	34.7%	12	29	41	29.3%	49	60	109	45.0%	Career	31	56	87	35.6%	5	18	23	21.7%	3	5	8	37.5%	3	9	12	25.0%

Advanced Statistics Comparison by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Mary Lou Piatek																Audra Keller
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
1978	1499	106.8	—	—	—	—	—	—	—	0.0%	-3.50	—	—	—	-0.12	1989	1538	121.7	—	—	—	—	+45	—	—	46.7%	-0.53	0–1	2–0	—	-0.15
1979	1547	118.2	—	—	—	—	+97	—	—	42.1%	-0.89	1–2 (33%)	0–1	—	+0.14	1990	1610	120.6	—	—	—	—	+23	-55	-49	41.8%	-0.88	3–6 (33%)	6–2 (75%)	100.8	-0.12
1980	1735	137.7	—	—	—	—	+8	-158	—	55.7%	+0.51	3–2 (60%)	1–0	—	-0.18	1991	1641	126.8	—	—	—	—	+5	-108	—	39.3%	-0.79	2–2 (50%)	3–4 (43%)	101.2	-0.95
1981	1869	146.1	—	—	—	—	+63	-192	-295	56.7%	+0.48	8–10 (44%)	6–5 (55%)	101.1	-3.04	1992	1523	109.9	—	—	—	—	+31	-41	—	27.9%	-1.81	1–6 (14%)	3–2 (60%)	95.2	-0.16
1982	1792	141.6	—	—	—	—	+56	-194	-210	47.1%	-0.08	4–5 (44%)	2–3 (40%)	96.7	-0.75	1993	1525	127.3	—	—	—	—	+21	—	—	38.2%	-0.59	1–3 (25%)	1–2 (33%)	97.3	-0.30
1983	1721	143.7	—	—	—	—	+53	-86	—	41.3%	-0.43	4–7 (36%)	0–5 (0%)	91.3	-3.81	1994	1472	113.7	—	—	—	—	+43	-4	—	30.8%	-1.28	1–4 (20%)	—	—	+0.46
1984	1703	128.4	—	—	—	—	-13	—	-69	47.7%	-0.47	5–5 (50%)	4–3 (57%)	101.0	-0.69	1995	1469	112.8	—	—	—	—	+54	-34	—	31.6%	-1.29	2–4 (33%)	1–5 (17%)	96.4	-0.60
1985	1678	113.6	—	—	—	—	-29	-65	-67	43.1%	-0.61	5–3 (63%)	1–3 (25%)	100.7	+2.10	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1986	1618	111.0	—	—	—	—	+10	—	-24	38.5%	-0.67	2–4 (33%)	0–3 (0%)	95.5	+1.60	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1987	1594	117.2	—	—	—	—	+33	—	—	35.7%	-0.78	3–3 (50%)	0–1	—	+0.29	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1988	1542	116.2	—	—	—	—	+33	-43	—	30.8%	-1.31	4–4 (50%)	0–2	—	-0.55	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1989	1592	121.3	—	—	—	—	+35	-116	—	31.4%	-1.65	5–2 (71%)	4–2 (67%)	107.3	-2.88	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1990	1611	125.3	—	—	—	—	+8	-85	—	43.9%	-0.63	1–2 (33%)	0–2	—	-0.44	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1991	1630	119.4	—	—	—	—	+17	—	—	41.4%	-0.31	1–2 (33%)	0–2	—	-0.69	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1992	1560	101.4	—	—	—	—	-16	—	—	23.8%	-2.00	0–3 (0%)	0–2	—	-0.39	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
1993	1555	103.2	—	—	—	—	-22	—	—	42.9%	-0.71	0–1	1–0	—	-0.16	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Career	1932	136.4	—	—	—	—	+26	-124	-154	43.9%	-0.44	46–55 (46%)	19–34 (36%)	92.3	-2.67	Career	1645	125.5	—	—	—	—	+28	-51	-49	36.3%	-1.05	10–26 (28%)	16–15 (52%)	93.8	-1.40

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.

Mary Lou Piatek's most-played WTA rivals
Opponent	W	L	M	Last Played	H2H
Sylvia Hanika	5	5	10	Mar 31, 1990	H2H
Betsy Nagelsen	8	1	9	Sep 26, 1986	H2H
Anne Smith	1	7	8	Feb 14, 1991	H2H
Martina Navratilova	0	8	8	Dec 2, 1984	H2H
Wendy White	4	2	6	Feb 22, 1990	H2H

Audra Keller's most-played WTA rivals
Opponent	W	L	M	Last Played	H2H
Patty Fendick	2	2	4	Nov 14, 1991	H2H
Brenda Schultz-Mccarthy	0	3	3	Aug 30, 1995	H2H
Manon Bollegraf	1	2	3	Nov 3, 1994	H2H
Helen Kelesi	1	2	3	Feb 17, 1994	H2H
Kristie Boogert	0	2	2	Aug 2, 1995	H2H