H2H data updated: 2026-10-28 00:00 UTC

Betsy Nagelsen vs Mareen Louie Harper H2H: 1-2

Mareen Louie Harper holds a 2–1 lead over Betsy Nagelsen in their WTA head-to-head. Across 3 main-draw meetings, Mareen Louie Harper leads 1–0 on carpet, while Betsy Nagelsen leads 1–0 on grass. Most recently, Betsy Nagelsen won the 1989 Eastbourne Open round of 32 4-6 6-1 6-4.

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

Betsy Nagelsen

USA Age 70 Right-Handed 175 cm / 5'9"

H2H

1 – 2

3 main-draw meetings

Mareen Louie Harper

USA Age 66

H2H Match Log

Player	Score	Player	Match Data	Date	Round	Tournament	Category	Surface
Betsy Nagelsen #63	4-6 6-1 6-4	Mareen Louie Harper	Match data	Jun 22, 1989*	R32	Eastbourne Open	WTA 250	Grass
Mareen Louie Harper	7-6 6-0	Betsy Nagelsen	Match data	Jan 15, 1981*	R32	Kansas City	WTA 250	Carpet
Mareen Louie Harper	3-6 6-3 6-4	Betsy Nagelsen	Match data	Sep 13, 1979*	R32	Tokyo Sillook	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
Betsy Nagelsen	—	#25	28	1,892	266	324	45.1%	0	0	0	0	6	6
Mareen Louie Harper	—	—	—	1,911	179	240	42.7%	0	0	0	0	2	2

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	Betsy Nagelsen							Mareen Louie Harper
Age	Yr	W-L	Win %	Rank	Elo	GS	Titles	Yr	W-L	Win %	Rank	Elo	GS	Titles
13	—	—	—	—	—	—	—	1974	2–1	66.7%	—	1,523	0	0
15	1972	4–2	66.7%	—	1,511	0	1	1976	1–2	33.3%	—	1,521	0	0
16	1973	1–3	25.0%	—	1,494	0	1	1977	0–2	0.0%	—	1,519	0	0
17	1974	27–18	60.0%	—	1,724	0	3	1978	9–13	40.9%	—	1,599	0	0
18	1975	18–17	51.4%	—	1,790	0	3	1979	4–13	23.5%	—	1,575	0	0
19	1976	11–19	36.7%	—	1,707	0	3	1980	22–23	48.9%	—	1,719	0	0
20	1977	8–15	34.8%	—	1,677	0	3	1981	16–20	44.4%	—	1,745	0	0
21	1978	13–24	35.1%	—	1,657	0	3	1982	9–18	33.3%	—	1,656	0	0
22	1979	18–19	48.6%	—	1,694	0	5	1983	7–10	41.2%	—	1,672	0	0
23	1980	22–27	44.9%	—	1,755	0	5	1984	18–17	51.4%	—	1,734	0	1
24	1981	20–21	48.8%	—	1,808	0	6	1985	29–18	61.7%	—	1,777	0	2
25	1982	12–17	41.4%	—	1,706	0	6	1986	12–17	41.4%	—	1,680	0	2
26	1983	18–22	45.0%	—	1,693	0	6	1987	9–16	36.0%	—	1,623	0	2
27	1984	11–18	37.9%	#77	1,631	0	6	1988	12–17	41.4%	—	1,613	0	2
28	1985	14–12	53.8%	—	1,714	0	6	1989	6–14	30.0%	—	1,576	0	2
29	1986	18–17	51.4%	#46	1,699	0	6	1990	10–15	40.0%	—	1,590	0	2
30	1987	13–15	46.4%	#61	1,646	0	6	1991	12–16	42.9%	—	1,614	0	2
31	1988	11–19	36.7%	#109	1,586	0	6	1992	1–7	12.5%	—	1,545	0	2
32	1989	18–15	54.5%	#45	1,662	0	6	—	—	—	—	—	—	—
33	1990	8–12	40.0%	#96	1,640	0	6	1994	0–1	0.0%	—	1,537	0	2
34	1991	0–2	0.0%	—	1,608	0	6	—	—	—	—	—	—	—
35	1992	1–5	16.7%	#418	1,561	0	6	—	—	—	—	—	—	—
36	1993	0–4	0.0%	—	1,511	0	6	—	—	—	—	—	—	—
37	1994	0–1	0.0%	—	1,509	0	6	—	—	—	—	—	—	—

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	Betsy Nagelsen																	Mareen Louie Harper
	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 %
13	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1974	2	1	3	66.7%	—	—	—	—	—	—	—	—	—	—	—	—
15	1972	—	—	—	—	2	1	3	66.7%	0	1	1	0.0%	—	—	—	—	1976	—	—	—	—	0	1	1	0.0%	1	1	2	50.0%	—	—	—	—
16	1973	1	1	2	50.0%	0	2	2	0.0%	—	—	—	—	—	—	—	—	1977	—	—	—	—	0	1	1	0.0%	—	—	—	—	0	1	1	0.0%
17	1974	3	2	5	60.0%	6	6	12	50.0%	13	6	19	68.4%	0	4	4	0.0%	1978	6	6	12	50.0%	3	3	6	50.0%	—	—	—	—	0	4	4	0.0%
18	1975	5	5	10	50.0%	6	5	11	54.5%	2	3	5	40.0%	0	1	1	0.0%	1979	2	6	8	25.0%	0	1	1	0.0%	0	1	1	0.0%	2	5	7	28.6%
19	1976	0	2	2	0.0%	5	11	16	31.3%	3	3	6	50.0%	3	3	6	50.0%	1980	7	8	15	46.7%	3	2	5	60.0%	5	2	7	71.4%	7	11	18	38.9%
20	1977	3	3	6	50.0%	1	4	5	20.0%	3	5	8	37.5%	1	3	4	25.0%	1981	5	7	12	41.7%	1	1	2	50.0%	1	2	3	33.3%	9	10	19	47.4%
21	1978	3	7	10	30.0%	4	6	10	40.0%	5	5	10	50.0%	1	6	7	14.3%	1982	4	6	10	40.0%	2	1	3	66.7%	0	2	2	0.0%	3	9	12	25.0%
22	1979	4	7	11	36.4%	0	2	2	0.0%	4	4	8	50.0%	2	6	8	25.0%	1983	5	5	10	50.0%	—	—	—	—	—	—	—	—	2	5	7	28.6%
23	1980	7	7	14	50.0%	0	2	2	0.0%	10	7	17	58.8%	5	11	16	31.3%	1984	14	9	23	60.9%	0	1	1	0.0%	1	3	4	25.0%	3	4	7	42.9%
24	1981	5	6	11	45.5%	1	4	5	20.0%	11	4	15	73.3%	3	7	10	30.0%	1985	18	9	27	66.7%	0	2	2	0.0%	2	2	4	50.0%	9	5	14	64.3%
25	1982	2	4	6	33.3%	2	3	5	40.0%	3	3	6	50.0%	5	7	12	41.7%	1986	8	7	15	53.3%	—	—	—	—	1	2	3	33.3%	3	8	11	27.3%
26	1983	2	7	9	22.2%	2	5	7	28.6%	4	5	9	44.4%	7	4	11	63.6%	1987	6	8	14	42.9%	0	2	2	0.0%	2	3	5	40.0%	1	3	4	25.0%
27	1984	9	7	16	56.3%	0	4	4	0.0%	2	7	9	22.2%	—	—	—	—	1988	8	11	19	42.1%	1	1	2	50.0%	0	2	2	0.0%	3	3	6	50.0%
28	1985	6	5	11	54.5%	0	1	1	0.0%	7	5	12	58.3%	1	1	2	50.0%	1989	3	9	12	25.0%	—	—	—	—	2	3	5	40.0%	1	2	3	33.3%
29	1986	6	10	16	37.5%	0	1	1	0.0%	7	3	10	70.0%	5	3	8	62.5%	1990	8	10	18	44.4%	—	—	—	—	0	2	2	0.0%	2	3	5	40.0%
30	1987	8	6	14	57.1%	—	—	—	—	5	5	10	50.0%	0	4	4	0.0%	1991	9	11	20	45.0%	—	—	—	—	1	2	3	33.3%	2	3	5	40.0%
31	1988	5	13	18	27.8%	—	—	—	—	4	5	9	44.4%	2	1	3	66.7%	1992	1	5	6	16.7%	—	—	—	—	—	—	—	—	0	2	2	0.0%
32	1989	12	10	22	54.5%	—	—	—	—	6	3	9	66.7%	0	2	2	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
33	1990	3	7	10	30.0%	0	2	2	0.0%	5	3	8	62.5%	—	—	—	—	1994	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—
34	1991	—	—	—	—	—	—	—	—	0	2	2	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
35	1992	0	2	2	0.0%	—	—	—	—	1	1	2	50.0%	0	2	2	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
36	1993	0	2	2	0.0%	—	—	—	—	—	—	—	—	0	2	2	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
37	1994	0	1	1	0.0%	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Career	—	84	114	198	42.4%	29	59	88	33.0%	95	80	175	54.3%	35	67	102	34.3%	—	106	119	225	47.1%	10	16	26	38.5%	16	27	43	37.2%	47	78	125	37.6%

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	Betsy Nagelsen																Mareen Louie Harper
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
13	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1974	1524	102.4	—	—	—	—	+72	—	—	57.1%	+0.29	1–0	1–0	—	+0.56
15	1972	1511	98.7	—	—	—	—	—	+28	—	53.8%	+0.23	2–1 (67%)	1–1	—	+0.77	1976	1522	100.6	—	—	—	—	—	—	—	42.9%	-0.57	0–1	—	—	+0.37
16	1973	1495	98.7	—	—	—	—	—	—	—	40.0%	-1.00	0–2	1–0	—	+0.54	1977	1520	116.0	—	—	—	—	—	—	—	0.0%	-3.50	—	0–1	—	-0.35
17	1974	1725	133.0	—	—	—	—	-176	-202	+77	57.7%	+0.46	8–6 (57%)	5–6 (45%)	103.4	+0.49	1978	1599	122.7	—	—	—	—	+32	-41	—	39.2%	-0.96	5–2 (71%)	3–1 (75%)	107.4	+0.50
18	1975	1791	125.1	—	—	—	—	-124	-166	-38	45.7%	-0.44	4–4 (50%)	3–3 (50%)	101.5	-3.24	1979	1576	121.8	—	—	—	—	+27	—	—	30.0%	-1.90	2–4 (33%)	2–1 (67%)	—	+0.40
19	1976	1708	124.4	—	—	—	—	-64	-115	+73	41.4%	-0.76	3–7 (30%)	1–1	—	-1.59	1980	1719	129.4	—	—	—	—	-38	-158	-41	46.2%	-0.59	12–4 (75%)	2–6 (25%)	107.4	+1.11
20	1977	1678	124.1	—	—	—	—	-30	-106	+48	37.9%	-0.62	6–6 (50%)	1–2 (33%)	—	+0.11	1981	1746	134.8	—	—	—	—	-2	—	-75	42.7%	-0.51	7–5 (58%)	4–2 (67%)	104.9	-1.67
21	1978	1658	129.7	—	—	—	—	-102	-84	+101	41.2%	-0.57	4–11 (27%)	3–7 (30%)	91.9	-1.33	1982	1656	125.3	—	—	—	—	-25	-46	—	35.5%	-1.06	4–4 (50%)	1–2 (33%)	99.6	-1.44
22	1979	1695	123.1	—	—	—	—	-131	—	+13	48.9%	+0.08	8–8 (50%)	1–3 (25%)	98.5	+1.74	1983	1672	132.3	—	—	—	—	-12	—	—	42.9%	-0.43	2–1 (67%)	1–2 (33%)	100.3	-0.96
23	1980	1756	131.7	—	—	—	—	-144	—	+38	47.9%	-0.41	7–12 (37%)	6–2 (75%)	102.2	-2.08	1984	1734	127.7	—	—	—	—	+24	—	-95	48.8%	-0.05	7–3 (70%)	2–3 (40%)	105.0	+0.48
24	1981	1809	135.3	—	—	—	—	-128	-307	+95	49.5%	-0.18	8–7 (53%)	5–5 (50%)	103.7	-3.62	1985	1778	143.9	—	—	—	—	+52	—	-156	58.5%	+0.41	8–4 (67%)	5–5 (50%)	101.8	-0.23
25	1982	1706	123.4	—	—	—	—	-98	-215	+169	47.3%	-0.34	5–11 (31%)	9–3 (75%)	100.0	+0.16	1986	1680	121.3	—	—	—	—	+20	—	-64	39.1%	-0.55	5–3 (63%)	2–5 (29%)	97.5	+1.36
26	1983	1693	127.0	—	—	—	—	-32	-138	+114	46.3%	-0.46	7–8 (47%)	7–6 (54%)	102.2	+0.86	1987	1624	119.6	—	—	—	—	+7	—	-16	38.6%	-0.67	3–4 (43%)	1–1	—	+0.21
27	1984	1632	126.6	—	—	—	—	+58	-142	+116	41.4%	-0.51	5–7 (42%)	7–3 (70%)	99.2	+0.78	1988	1614	129.2	—	—	—	—	+12	—	—	43.3%	-0.43	4–5 (44%)	5–4 (56%)	100.4	-0.37
28	1985	1714	129.7	—	—	—	—	-25	—	+88	54.2%	+0.36	7–4 (64%)	1–2 (33%)	—	+1.14	1989	1577	117.4	—	—	—	—	-17	—	-22	32.0%	-1.38	6–4 (60%)	6–1 (86%)	107.4	-1.28
29	1986	1700	131.2	—	—	—	—	-55	—	+170	51.8%	+0.01	6–7 (46%)	4–3 (57%)	98.8	+1.52	1990	1591	128.5	—	—	—	—	+9	—	—	45.8%	-0.14	2–7 (22%)	1–3 (25%)	94.5	+0.31
30	1987	1646	121.7	—	—	—	—	-24	—	+150	46.2%	0.00	5–6 (45%)	4–5 (44%)	97.1	+1.59	1991	1615	127.2	—	—	—	—	-4	—	-50	39.4%	-0.53	8–4 (67%)	4–4 (50%)	105.2	+0.46
31	1988	1586	116.1	—	—	—	—	-26	—	+128	42.5%	-0.27	4–9 (31%)	5–8 (38%)	93.3	+1.50	1992	1545	105.5	—	—	—	—	-7	—	—	25.0%	-1.81	0–2	1–0	—	-0.11
32	1989	1663	126.1	—	—	—	—	-56	—	+97	50.6%	+0.04	11–6 (65%)	3–4 (43%)	105.8	+1.46	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
33	1990	1640	115.1	—	—	—	—	-81	—	+173	40.0%	-0.60	3–2 (60%)	2–4 (33%)	100.0	+0.09	1994	1537	103.8	—	—	—	—	—	—	—	0.0%	-2.50	—	0–1	—	-0.17
34	1991	1608	97.2	—	—	—	—	—	—	—	20.0%	-2.40	0–1	—	—	-0.01	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
35	1992	1561	105.4	—	—	—	—	-50	—	—	26.7%	-1.67	1–2 (33%)	1–0	—	+0.03	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
36	1993	1511	98.5	—	—	—	—	-47	—	—	20.0%	-2.70	0–2	0–1	—	+0.17	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
37	1994	1509	102.5	—	—	—	—	—	—	—	0.0%	-5.50	—	—	—	-0.16	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Career	—	1893	132.2	—	—	—	—	-73	-148	+94	46.5%	-0.28	104–129 (45%)	70–69 (50%)	101.0	+0.16	—	1911	135.4	—	—	—	—	+8	-84	-60	42.6%	-0.56	76–57 (57%)	41–42 (49%)	107.5	-0.20

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.

Betsy Nagelsen's most-played WTA rivals
Opponent	W	L	M	Last Played	H2H
Pam Shriver	1	9	10	Nov 12, 1992	H2H
Sue Barker	2	8	10	Jun 28, 1981	H2H
Mary Lou Piatek	1	8	9	Sep 26, 1986	H2H
Rosie Casals	3	6	9	Aug 29, 1985	H2H
Virginia Wade	1	8	9	Jun 15, 1983	H2H

Mareen Louie Harper's most-played WTA rivals
Opponent	W	L	M	Last Played	H2H
Chris Evert	0	9	9	Jun 28, 1989	H2H
Laura Arraya	3	5	8	Jan 31, 1992	H2H
Wendy Turnbull	2	6	8	Aug 13, 1986	H2H
Pam Shriver	0	7	7	Feb 24, 1992	H2H
Anne Smith	1	5	6	Nov 1, 1990	H2H