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

Betsy Nagelsen vs Louise Allen H2H: 1-0

Betsy Nagelsen holds a 1–0 lead over Louise Allen in their WTA head-to-head. Across 1 main-draw meeting, Betsy Nagelsen leads 1–0 on hard courts. Most recently, Betsy Nagelsen won the 1990 Singapore Tennis Open round of 32 6-4 6-3.

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Betsy Nagelsen
USA Age 69 Right-Handed 175 cm / 5'9"
H2H
1 – 0
1 main-draw meetings
Louise Allen
USA Age 64

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Betsy Nagelsen #52 6-4 6-3 Louise Allen Match data Apr 26, 1990* R32 Singapore Tennis Open Tier IV → modern equivalent 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 #692 #25 28 1,890 266 324 45.1% 0 0 0 0 6 6
Louise Allen — — — 1,758 67 100 40.1% 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 Betsy Nagelsen Louise Allen
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 1980 3–2 60.0% — 1,519 0 0
19 1976 11–19 36.7% — 1,709 0 3 1981 6–5 54.5% — 1,540 0 0
20 1977 8–15 34.8% — 1,678 0 3 1982 22–5 81.5% — 1,736 0 3
21 1978 13–24 35.1% — 1,659 0 3 1983 3–7 30.0% — 1,706 0 3
22 1979 18–19 48.6% — 1,694 0 5 1984 0–1 0.0% — 1,685 0 3
23 1980 22–27 44.9% — 1,753 0 5 — — — — — — —
24 1981 20–21 48.8% — 1,806 0 6 1986 0–4 0.0% — 1,611 0 3
25 1982 12–17 41.4% — 1,705 0 6 1987 3–8 27.3% — 1,564 0 3
26 1983 18–22 45.0% — 1,692 0 6 1988 5–8 38.5% — 1,584 0 3
27 1984 11–18 37.9% #77 1,630 0 6 1989 9–15 37.5% — 1,561 0 3
28 1985 14–12 53.8% #81 1,713 0 6 1990 2–9 18.2% — 1,492 0 3
29 1986 18–17 51.4% #46 1,699 0 6 1991 2–8 20.0% — 1,453 0 3
30 1987 13–15 46.4% #61 1,645 0 6 1992 10–14 41.7% — 1,576 0 3
31 1988 11–19 36.7% #109 1,585 0 6 1993 2–14 12.5% — 1,451 0 3
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 Betsy Nagelsen Louise Allen
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% 1981 0 1 1 0.0% — — — — — — — — — — — —
20 1977 3 3 6 50.0% 1 4 5 20.0% 3 5 8 37.5% 1 3 4 25.0% 1982 13 4 17 76.5% 0 1 1 0.0% — — — — — — — —
21 1978 3 7 10 30.0% 4 6 10 40.0% 5 5 10 50.0% 1 6 7 14.3% 1983 1 1 2 50.0% 0 3 3 0.0% 2 3 5 40.0% — — — —
22 1979 4 7 11 36.4% 0 2 2 0.0% 4 4 8 50.0% 2 6 8 25.0% 1984 0 1 1 0.0% — — — — — — — — — — — —
23 1980 7 7 14 50.0% 0 2 2 0.0% 10 7 17 58.8% 5 11 16 31.3% — — — — — — — — — — — — — — — — —
24 1981 5 6 11 45.5% 1 4 5 20.0% 11 4 15 73.3% 3 7 10 30.0% 1986 0 2 2 0.0% 0 1 1 0.0% 0 1 1 0.0% — — — —
25 1982 2 4 6 33.3% 2 3 5 40.0% 3 3 6 50.0% 5 7 12 41.7% 1987 1 3 4 25.0% 2 2 4 50.0% 0 1 1 0.0% 0 2 2 0.0%
26 1983 2 7 9 22.2% 2 5 7 28.6% 4 5 9 44.4% 7 4 11 63.6% 1988 5 7 12 41.7% — — — — — — — — 0 1 1 0.0%
27 1984 9 7 16 56.3% 0 4 4 0.0% 2 7 9 22.2% — — — — 1989 8 12 20 40.0% 0 1 1 0.0% 1 1 2 50.0% 0 1 1 0.0%
28 1985 6 5 11 54.5% 0 1 1 0.0% 7 5 12 58.3% 1 1 2 50.0% 1990 2 8 10 20.0% — — — — — — — — 0 1 1 0.0%
29 1986 6 10 16 37.5% 0 1 1 0.0% 7 3 10 70.0% 5 3 8 62.5% 1991 2 6 8 25.0% 0 2 2 0.0% — — — — — — — —
30 1987 8 6 14 57.1% — — — — 5 5 10 50.0% 0 4 4 0.0% 1992 7 5 12 58.3% 1 4 5 20.0% 2 3 5 40.0% 0 2 2 0.0%
31 1988 5 13 18 27.8% — — — — 4 5 9 44.4% 2 1 3 66.7% 1993 1 6 7 14.3% 1 2 3 33.3% 0 3 3 0.0% 0 3 3 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% — — — — — — — — — — — — — — — — — — — — —
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% — 40 56 96 41.7% 4 16 20 20.0% 5 12 17 29.4% 0 10 10 0.0%

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 Louise Allen
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 1980 1520 102.6 — — — — — — — 60.0% +0.40 2–0 1–0 — +0.07
19 1976 1709 124.2 — — — — -65 -116 +70 41.4% -0.76 3–7 (30%) 1–1 — -1.73 1981 1540 111.9 — — — — — — — 53.6% +0.64 3–3 (50%) 1–3 (25%) 98.7 -0.03
20 1977 1678 123.8 — — — — -30 -105 +46 37.9% -0.62 6–6 (50%) 1–2 (33%) — +0.05 1982 1736 132.6 — — — — -16 — — 75.4% +2.03 5–2 (71%) 2–2 (50%) 103.9 +2.84
21 1978 1659 129.6 — — — — -99 -85 +99 40.7% -0.58 4–10 (29%) 3–7 (30%) 92.4 -0.84 1983 1706 117.7 — — — — — -183 -107 33.3% -1.67 0–1 1–1 — -0.80
22 1979 1695 122.8 — — — — -132 — +12 48.9% +0.08 8–8 (50%) 1–3 (25%) 98.5 +1.65 1984 1686 96.2 — — — — — — — 33.3% -2.67 0–1 — — +0.11
23 1980 1753 130.7 — — — — -148 — +40 47.9% -0.41 7–12 (37%) 6–2 (75%) 102.2 -1.78 — — — — — — — — — — — — — — — —
24 1981 1806 134.9 — — — — -129 -305 +99 49.5% -0.18 8–7 (53%) 5–5 (50%) 103.7 -3.53 1986 1612 101.4 — — — — — — — 20.0% -1.50 0–2 0–2 — +0.38
25 1982 1705 123.2 — — — — -99 -214 +170 47.3% -0.34 5–11 (31%) 9–3 (75%) 100.0 -0.40 1987 1565 110.9 — — — — +20 -55 — 32.0% -1.28 1–2 (33%) 1–2 (33%) 97.0 +0.16
26 1983 1693 126.7 — — — — -32 -138 +114 46.3% -0.46 7–8 (47%) 7–6 (54%) 102.2 +0.98 1988 1584 119.3 — — — — -2 — — 45.7% -0.20 3–6 (33%) 2–2 (50%) 97.4 -0.03
27 1984 1631 126.4 — — — — +59 -141 +117 41.4% -0.51 5–7 (42%) 7–3 (70%) 99.2 +0.69 1989 1561 113.9 — — — — -23 — — 43.1% -0.66 3–7 (30%) 5–2 (71%) 100.1 +0.22
28 1985 1714 129.5 — — — — -26 — +87 54.2% +0.36 7–4 (64%) 1–2 (33%) — +1.17 1990 1493 106.1 — — — — -19 — — 21.7% -1.39 0–1 0–3 (0%) — +0.64
29 1986 1699 131.1 — — — — -55 — +171 51.8% +0.01 6–7 (46%) 4–3 (57%) 98.8 +1.66 1991 1453 100.2 — — — — -9 — — 31.8% -1.54 1–3 (25%) 1–0 — +0.75
30 1987 1646 121.6 — — — — -24 — +148 46.2% 0.00 5–6 (45%) 4–5 (44%) 97.1 +1.69 1992 1576 125.0 — — — — +2 -118 -27 41.8% -0.80 4–3 (57%) 2–2 (50%) 103.6 -0.19
31 1988 1586 116.1 — — — — -27 — +128 42.5% -0.27 4–9 (31%) 5–8 (38%) 93.3 +1.55 1993 1452 91.9 — — — — +19 +6 +65 20.6% -2.12 1–3 (25%) 2–3 (40%) 96.2 +0.76
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 — 1891 131.9 — — — — -73 -148 +94 46.5% -0.28 104–128 (45%) 70–69 (50%) 101.1 +0.27 — 1759 120.5 — — — — -7 -89 -37 43.6% -0.45 23–34 (40%) 18–22 (45%) 95.9 +2.92

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.