H2H data updated: 2026-09-12 00:00 UTC

Kathleen Harter vs Betsy Nagelsen H2H: 0-1

Betsy Nagelsen holds a 1–0 lead over Kathleen Harter in their WTA head-to-head. Across 1 main-draw meeting, Betsy Nagelsen leads 1–0 on grass. Most recently, Betsy Nagelsen won the 1977 Sydney round of 32 6-3 6-0.

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

Kathleen Harter
USA Age 79
H2H
0 – 1
1 main-draw meetings
Betsy Nagelsen
USA Age 69 Right-Handed 175 cm / 5'9"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Betsy Nagelsen 6-3 6-0 Kathleen Harter Match data Nov 17, 1977* R32 Sydney WTA 500 Grass

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
Kathleen Harter — — — 1,746 106 103 50.7% 0 0 0 0 2 2
Betsy Nagelsen #692 #25 28 1,890 266 324 45.1% 0 0 0 0 6 6

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 Kathleen Harter Betsy Nagelsen
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
15 — — — — — — — 1972 4–2 66.7% — 1,511 0 1
16 — — — — — — — 1973 1–3 25.0% — 1,494 0 1
17 — — — — — — — 1974 27–18 60.0% — 1,724 0 3
18 — — — — — — — 1975 18–17 51.4% — 1,790 0 3
19 — — — — — — — 1976 11–19 36.7% — 1,709 0 3
20 — — — — — — — 1977 8–15 34.8% — 1,678 0 3
21 1968 40–22 64.5% — 1,690 0 0 1978 13–24 35.1% — 1,659 0 3
22 1969 1–1 50.0% — 1,685 0 0 1979 18–19 48.6% — 1,694 0 5
23 1970 23–20 53.5% — 1,678 0 0 1980 22–27 44.9% — 1,753 0 5
24 1971 9–2 81.8% — 1,732 0 2 1981 20–21 48.8% — 1,806 0 6
25 — — — — — — — 1982 12–17 41.4% — 1,705 0 6
26 — — — — — — — 1983 18–22 45.0% — 1,692 0 6
27 1974 4–5 44.4% — 1,729 0 2 1984 11–18 37.9% #77 1,630 0 6
28 1975 6–8 42.9% — 1,664 0 2 1985 14–12 53.8% #81 1,713 0 6
29 1976 9–16 36.0% — 1,615 0 2 1986 18–17 51.4% #46 1,699 0 6
30 1977 12–20 37.5% — 1,644 0 2 1987 13–15 46.4% #61 1,645 0 6
31 1978 2–9 18.2% — 1,591 0 2 1988 11–19 36.7% #109 1,585 0 6
32 — — — — — — — 1989 18–15 54.5% #45 1,662 0 6
33 — — — — — — — 1990 8–12 40.0% #96 1,639 0 6
34 — — — — — — — 1991 0–2 0.0% #337 1,607 0 6
35 — — — — — — — 1992 1–5 16.7% #418 1,561 0 6
36 — — — — — — — 1993 0–4 0.0% #394 1,510 0 6
37 — — — — — — — 1994 0–1 0.0% #692 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 Kathleen Harter Betsy Nagelsen
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 %
15 — — — — — — — — — — — — — — — — — 1972 — — — — 2 1 3 66.7% 0 1 1 0.0% — — — —
16 — — — — — — — — — — — — — — — — — 1973 1 1 2 50.0% 0 2 2 0.0% — — — — — — — —
17 — — — — — — — — — — — — — — — — — 1974 3 2 5 60.0% 6 6 12 50.0% 13 6 19 68.4% 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%
19 — — — — — — — — — — — — — — — — — 1976 0 2 2 0.0% 5 11 16 31.3% 3 3 6 50.0% 3 3 6 50.0%
20 — — — — — — — — — — — — — — — — — 1977 3 3 6 50.0% 1 4 5 20.0% 3 5 8 37.5% 1 3 4 25.0%
21 1968 12 5 17 70.6% 11 6 17 64.7% 16 9 25 64.0% 1 2 3 33.3% 1978 3 7 10 30.0% 4 6 10 40.0% 5 5 10 50.0% 1 6 7 14.3%
22 1969 1 1 2 50.0% — — — — — — — — — — — — 1979 4 7 11 36.4% 0 2 2 0.0% 4 4 8 50.0% 2 6 8 25.0%
23 1970 6 4 10 60.0% 7 7 14 50.0% 8 8 16 50.0% — — — — 1980 7 7 14 50.0% 0 2 2 0.0% 10 7 17 58.8% 5 11 16 31.3%
24 1971 1 1 2 50.0% — — — — 8 1 9 88.9% — — — — 1981 5 6 11 45.5% 1 4 5 20.0% 11 4 15 73.3% 3 7 10 30.0%
25 — — — — — — — — — — — — — — — — — 1982 2 4 6 33.3% 2 3 5 40.0% 3 3 6 50.0% 5 7 12 41.7%
26 — — — — — — — — — — — — — — — — — 1983 2 7 9 22.2% 2 5 7 28.6% 4 5 9 44.4% 7 4 11 63.6%
27 1974 2 2 4 50.0% 1 1 2 50.0% 0 1 1 0.0% 1 1 2 50.0% 1984 9 7 16 56.3% 0 4 4 0.0% 2 7 9 22.2% — — — —
28 1975 — — — — 1 1 2 50.0% 3 2 5 60.0% 0 1 1 0.0% 1985 6 5 11 54.5% 0 1 1 0.0% 7 5 12 58.3% 1 1 2 50.0%
29 1976 0 1 1 0.0% 3 9 12 25.0% 5 5 10 50.0% 1 1 2 50.0% 1986 6 10 16 37.5% 0 1 1 0.0% 7 3 10 70.0% 5 3 8 62.5%
30 1977 2 4 6 33.3% 2 6 8 25.0% 5 7 12 41.7% 3 3 6 50.0% 1987 8 6 14 57.1% — — — — 5 5 10 50.0% 0 4 4 0.0%
31 1978 1 2 3 33.3% 0 1 1 0.0% 1 2 3 33.3% 0 4 4 0.0% 1988 5 13 18 27.8% — — — — 4 5 9 44.4% 2 1 3 66.7%
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% — — — —
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 — 25 20 45 55.6% 25 31 56 44.6% 46 35 81 56.8% 6 12 18 33.3% — 84 114 198 42.4% 29 59 88 33.0% 95 80 175 54.3% 35 67 102 34.3%

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 Kathleen Harter Betsy Nagelsen
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
15 — — — — — — — — — — — — — — — — 1972 1511 98.7 — — — — — +28 — 53.8% +0.23 2–1 (67%) 1–1 — +0.77
16 — — — — — — — — — — — — — — — — 1973 1495 98.7 — — — — — — — 40.0% -1.00 0–2 1–0 — +0.55
17 — — — — — — — — — — — — — — — — 1974 1725 133.0 — — — — -176 -202 +77 57.7% +0.46 8–6 (57%) 5–6 (45%) 103.4 +0.58
18 — — — — — — — — — — — — — — — — 1975 1791 125.1 — — — — -124 -166 -38 45.7% -0.44 4–4 (50%) 3–3 (50%) 101.5 -3.05
19 — — — — — — — — — — — — — — — — 1976 1709 124.2 — — — — -65 -116 +70 41.4% -0.76 3–7 (30%) 1–1 — -1.73
20 — — — — — — — — — — — — — — — — 1977 1678 123.8 — — — — -30 -105 +46 37.9% -0.62 6–6 (50%) 1–2 (33%) — +0.05
21 1968 1691 124.1 — — — — +5 -60 +10 63.4% +1.09 6–5 (55%) — — 0.00 1978 1659 129.6 — — — — -99 -85 +99 40.7% -0.58 4–10 (29%) 3–7 (30%) 92.4 -0.84
22 1969 1686 102.9 — — — — — — — 40.0% -0.20 1–0 — — +0.23 1979 1695 122.8 — — — — -132 — +12 48.9% +0.08 8–8 (50%) 1–3 (25%) 98.5 +1.65
23 1970 1678 122.9 — — — — +41 -69 +30 53.1% +0.10 5–7 (42%) 2–0 — +0.91 1980 1753 130.7 — — — — -148 — +40 47.9% -0.41 7–12 (37%) 6–2 (75%) 102.2 -1.78
24 1971 1732 126.5 — — — — — — +71 79.2% +2.54 1–1 — — +2.89 1981 1806 134.9 — — — — -129 -305 +99 49.5% -0.18 8–7 (53%) 5–5 (50%) 103.7 -3.53
25 — — — — — — — — — — — — — — — — 1982 1705 123.2 — — — — -99 -214 +170 47.3% -0.34 5–11 (31%) 9–3 (75%) 100.0 -0.40
26 — — — — — — — — — — — — — — — — 1983 1693 126.7 — — — — -32 -138 +114 46.3% -0.46 7–8 (47%) 7–6 (54%) 102.2 +0.98
27 1974 1729 112.1 — — — — -17 — — 42.1% -1.16 1–2 (33%) 1–0 — -0.51 1984 1631 126.4 — — — — +59 -141 +117 41.4% -0.51 5–7 (42%) 7–3 (70%) 99.2 +0.69
28 1975 1665 112.0 — — — — — — +97 44.1% -0.82 3–3 (50%) 1–1 — +0.39 1985 1714 129.5 — — — — -26 — +87 54.2% +0.36 7–4 (64%) 1–2 (33%) — +1.17
29 1976 1615 122.9 — — — — +60 -57 +152 41.7% -0.45 3–7 (30%) 4–5 (44%) 95.7 +0.03 1986 1699 131.1 — — — — -55 — +171 51.8% +0.01 6–7 (46%) 4–3 (57%) 98.8 +1.66
30 1977 1644 127.2 — — — — +49 -96 +72 37.5% -0.88 5–3 (63%) 2–4 (33%) 101.5 +0.34 1987 1646 121.6 — — — — -24 — +148 46.2% 0.00 5–6 (45%) 4–5 (44%) 97.1 +1.69
31 1978 1592 110.8 — — — — +42 — +109 24.0% -1.40 1–2 (33%) 1–5 (17%) 95.6 -0.07 1988 1586 116.1 — — — — -27 — +128 42.5% -0.27 4–9 (31%) 5–8 (38%) 93.3 +1.55
32 — — — — — — — — — — — — — — — — 1989 1662 126.0 — — — — -56 — +96 50.6% +0.04 11–6 (65%) 3–4 (43%) 105.8 +1.48
33 — — — — — — — — — — — — — — — — 1990 1640 115.0 — — — — -81 — +173 40.0% -0.60 3–2 (60%) 2–4 (33%) 100.0 +0.09
34 — — — — — — — — — — — — — — — — 1991 1608 97.2 — — — — — — — 20.0% -2.40 0–1 — — -0.01
35 — — — — — — — — — — — — — — — — 1992 1561 105.4 — — — — -52 — — 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 — 1746 127.1 — — — — +25 -67 +57 50.6% +0.08 26–30 (46%) 11–15 (42%) 95.9 +2.03 — 1891 131.9 — — — — -73 -148 +94 46.5% -0.28 104–128 (45%) 70–69 (50%) 101.1 +0.27

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.