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

Betsy Nagelsen vs Marianne Werdel Witmeyer H2H: 1-1

Betsy Nagelsen and Marianne Werdel Witmeyer are tied 1–1 in their WTA head-to-head. Across 2 main-draw meetings, they are tied 1–1 on hard courts. Most recently, Marianne Werdel Witmeyer won the 1990 Singapore Tennis Open round of 16 6-2 6-3.

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Betsy Nagelsen
USA Age 69 Right-Handed 175 cm / 5'9"
H2H
1 – 1
2 main-draw meetings
Marianne Werdel Witmeyer
USA

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Marianne Werdel Witmeyer 6-2 6-3 Betsy Nagelsen #52 Match data Apr 27, 1990* R16 Singapore Tennis Open Tier IV → modern equivalent WTA 250 Hard
Betsy Nagelsen #68 6-3 5-7 6-2 Marianne Werdel Witmeyer Match data Aug 5, 1987* R64 San Diego WTA 500 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
Marianne Werdel Witmeyer — — — 1,850 181 203 47.1% 0 0 0 0 1 1

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.

Betsy Nagelsen Marianne Werdel Witmeyer
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1972 4–2 66.7% — 1,511 0 1 1983 0–1 0.0% — 1,492 0 0
1973 1–3 25.0% — 1,494 0 1 1984 0–1 0.0% — 1,477 0 0
1974 27–18 60.0% — 1,724 0 3 1985 6–3 66.7% — 1,541 0 1
1975 18–17 51.4% — 1,790 0 3 1986 13–10 56.5% — 1,683 0 1
1976 11–19 36.7% — 1,709 0 3 1987 10–17 37.0% — 1,659 0 1
1977 8–15 34.8% — 1,678 0 3 1988 11–20 35.5% — 1,586 0 1
1978 13–24 35.1% — 1,659 0 3 1989 13–17 43.3% — 1,592 0 1
1979 18–19 48.6% — 1,694 0 5 1990 18–18 50.0% — 1,745 0 1
1980 22–27 44.9% — 1,753 0 5 1991 21–19 52.5% — 1,739 0 1
1981 20–21 48.8% — 1,806 0 6 1992 13–17 43.3% — 1,697 0 1
1982 12–17 41.4% — 1,705 0 6 1993 21–18 53.8% — 1,748 0 1
1983 18–22 45.0% — 1,692 0 6 1994 22–22 50.0% — 1,773 0 1
1984 11–18 37.9% #77 1,630 0 6 1995 20–18 52.6% — 1,787 0 1
1985 14–12 53.8% #81 1,713 0 6 1996 8–18 30.8% — 1,665 0 1
1986 18–17 51.4% #46 1,699 0 6 1997 5–4 55.6% — 1,673 0 1
1987 13–15 46.4% #61 1,645 0 6 — — — — — — —
1988 11–19 36.7% #109 1,585 0 6 — — — — — — —
1989 18–15 54.5% #45 1,662 0 6 — — — — — — —
1990 8–12 40.0% #96 1,639 0 6 — — — — — — —
1991 0–2 0.0% #337 1,607 0 6 — — — — — — —
1992 1–5 16.7% #418 1,561 0 6 — — — — — — —
1993 0–4 0.0% #394 1,510 0 6 — — — — — — —
1994 0–1 0.0% #692 1,509 0 6 — — — — — — —

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.

Betsy Nagelsen Marianne Werdel Witmeyer
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 %
1972 — — — — 2 1 3 66.7% 0 1 1 0.0% — — — — 1983 — — — — 0 1 1 0.0% — — — — — — — —
1973 1 1 2 50.0% 0 2 2 0.0% — — — — — — — — 1984 — — — — — — — — — — — — 0 1 1 0.0%
1974 3 2 5 60.0% 6 6 12 50.0% 13 6 19 68.4% 0 4 4 0.0% 1985 1 2 3 33.3% — — — — — — — — — — — —
1975 5 5 10 50.0% 6 5 11 54.5% 2 3 5 40.0% 0 1 1 0.0% 1986 10 8 18 55.6% — — — — — — — — 3 2 5 60.0%
1976 0 2 2 0.0% 5 11 16 31.3% 3 3 6 50.0% 3 3 6 50.0% 1987 2 6 8 25.0% 0 2 2 0.0% 2 4 6 33.3% 6 5 11 54.5%
1977 3 3 6 50.0% 1 4 5 20.0% 3 5 8 37.5% 1 3 4 25.0% 1988 9 16 25 36.0% — — — — 1 3 4 25.0% 1 1 2 50.0%
1978 3 7 10 30.0% 4 6 10 40.0% 5 5 10 50.0% 1 6 7 14.3% 1989 11 14 25 44.0% 1 1 2 50.0% — — — — 1 2 3 33.3%
1979 4 7 11 36.4% 0 2 2 0.0% 4 4 8 50.0% 2 6 8 25.0% 1990 14 12 26 53.8% 1 2 3 33.3% 0 1 1 0.0% 3 3 6 50.0%
1980 7 7 14 50.0% 0 2 2 0.0% 10 7 17 58.8% 5 11 16 31.3% 1991 16 11 27 59.3% 1 2 3 33.3% 2 2 4 50.0% 2 4 6 33.3%
1981 5 6 11 45.5% 1 4 5 20.0% 11 4 15 73.3% 3 7 10 30.0% 1992 11 12 23 47.8% 0 2 2 0.0% 1 2 3 33.3% 1 1 2 50.0%
1982 2 4 6 33.3% 2 3 5 40.0% 3 3 6 50.0% 5 7 12 41.7% 1993 14 10 24 58.3% 1 2 3 33.3% 2 2 4 50.0% 4 4 8 50.0%
1983 2 7 9 22.2% 2 5 7 28.6% 4 5 9 44.4% 7 4 11 63.6% 1994 15 13 28 53.6% 1 2 3 33.3% 2 2 4 50.0% 4 5 9 44.4%
1984 9 7 16 56.3% 0 4 4 0.0% 2 7 9 22.2% — — — — 1995 14 11 25 56.0% 1 3 4 25.0% 1 2 3 33.3% 4 2 6 66.7%
1985 6 5 11 54.5% 0 1 1 0.0% 7 5 12 58.3% 1 1 2 50.0% 1996 3 10 13 23.1% 1 3 4 25.0% 0 2 2 0.0% 4 3 7 57.1%
1986 6 10 16 37.5% 0 1 1 0.0% 7 3 10 70.0% 5 3 8 62.5% 1997 5 4 9 55.6% — — — — — — — — — — — —
1987 8 6 14 57.1% — — — — 5 5 10 50.0% 0 4 4 0.0% — — — — — — — — — — — — — — — — —
1988 5 13 18 27.8% — — — — 4 5 9 44.4% 2 1 3 66.7% — — — — — — — — — — — — — — — — —
1989 12 10 22 54.5% — — — — 6 3 9 66.7% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
1990 3 7 10 30.0% 0 2 2 0.0% 5 3 8 62.5% — — — — — — — — — — — — — — — — — — — — —
1991 — — — — — — — — 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — —
1992 0 2 2 0.0% — — — — 1 1 2 50.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
1993 0 2 2 0.0% — — — — — — — — 0 2 2 0.0% — — — — — — — — — — — — — — — — —
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% Career 125 129 254 49.2% 7 20 27 25.9% 11 20 31 35.5% 33 33 66 50.0%

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.

Betsy Nagelsen Marianne Werdel Witmeyer
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
1972 1511 98.7 — — — — — +28 — 53.8% +0.23 2–1 (67%) 1–1 — +0.77 1983 1492 100.4 — — — — — — — 0.0% -2.50 — 0–1 — -0.02
1973 1495 98.7 — — — — — — — 40.0% -1.00 0–2 1–0 — +0.55 1984 1478 96.1 — — — — — — — 0.0% -4.00 — — — +0.29
1974 1725 133.0 — — — — -176 -202 +77 57.7% +0.46 8–6 (57%) 5–6 (45%) 103.4 +0.58 1985 1542 112.3 — — — — +15 — — 63.2% +0.89 1–0 0–1 — +0.37
1975 1791 125.1 — — — — -124 -166 -38 45.7% -0.44 4–4 (50%) 3–3 (50%) 101.5 -3.05 1986 1683 123.1 — — — — +21 — — 50.0% -0.34 8–2 (80%) 5–1 (83%) — +1.30
1976 1709 124.2 — — — — -65 -116 +70 41.4% -0.76 3–7 (30%) 1–1 — -1.73 1987 1659 129.2 — — — — +44 — -85 41.9% -0.77 2–6 (25%) 3–0 (100%) — -0.83
1977 1678 123.8 — — — — -30 -105 +46 37.9% -0.62 6–6 (50%) 1–2 (33%) — +0.05 1988 1587 119.6 — — — — +2 — -37 37.3% -1.03 2–3 (40%) 3–2 (60%) 100.4 -1.05
1978 1659 129.6 — — — — -99 -85 +99 40.7% -0.58 4–10 (29%) 3–7 (30%) 92.4 -0.84 1989 1592 119.9 — — — — -6 — — 44.1% -0.25 4–4 (50%) 3–4 (43%) 99.6 +2.41
1979 1695 122.8 — — — — -132 — +12 48.9% +0.08 8–8 (50%) 1–3 (25%) 98.5 +1.65 1990 1746 136.3 — — — — +8 -257 — 51.7% +0.10 7–10 (41%) 6–4 (60%) 103.1 -0.70
1980 1753 130.7 — — — — -148 — +40 47.9% -0.41 7–12 (37%) 6–2 (75%) 102.2 -1.78 1991 1740 132.5 — — — — +15 -243 -169 48.9% -0.13 10–4 (71%) 5–4 (56%) 103.3 +0.98
1981 1806 134.9 — — — — -129 -305 +99 49.5% -0.18 8–7 (53%) 5–5 (50%) 103.7 -3.53 1992 1697 133.3 — — — — +32 — -146 48.5% 0.00 3–7 (30%) 4–1 (80%) 98.1 +0.32
1982 1705 123.2 — — — — -99 -214 +170 47.3% -0.34 5–11 (31%) 9–3 (75%) 100.0 -0.40 1993 1749 139.9 — — — — +28 -270 -150 51.6% +0.31 8–5 (62%) 2–2 (50%) 101.6 -0.37
1983 1693 126.7 — — — — -32 -138 +114 46.3% -0.46 7–8 (47%) 7–6 (54%) 102.2 +0.98 1994 1773 143.7 — — — — +15 -260 -181 48.5% -0.08 9–6 (60%) 3–2 (60%) — -0.29
1984 1631 126.4 — — — — +59 -141 +117 41.4% -0.51 5–7 (42%) 7–3 (70%) 99.2 +0.69 1995 1788 149.0 — — — — +45 -292 — 54.1% +0.31 5–6 (45%) 3–2 (60%) 101.2 +0.06
1985 1714 129.5 — — — — -26 — +87 54.2% +0.36 7–4 (64%) 1–2 (33%) — +1.17 1996 1666 124.9 — — — — +54 -192 — 31.6% -1.28 3–2 (60%) 2–0 — +0.43
1986 1699 131.1 — — — — -55 — +171 51.8% +0.01 6–7 (46%) 4–3 (57%) 98.8 +1.66 1997 1673 119.1 — — — — +35 — — 52.6% +0.37 1–2 (33%) 0–1 — -0.07
1987 1646 121.6 — — — — -24 — +148 46.2% 0.00 5–6 (45%) 4–5 (44%) 97.1 +1.69 — — — — — — — — — — — — — — — —
1988 1586 116.1 — — — — -27 — +128 42.5% -0.27 4–9 (31%) 5–8 (38%) 93.3 +1.55 — — — — — — — — — — — — — — — —
1989 1662 126.0 — — — — -56 — +96 50.6% +0.04 11–6 (65%) 3–4 (43%) 105.8 +1.48 — — — — — — — — — — — — — — — —
1990 1640 115.0 — — — — -81 — +173 40.0% -0.60 3–2 (60%) 2–4 (33%) 100.0 +0.09 — — — — — — — — — — — — — — — —
1991 1608 97.2 — — — — — — — 20.0% -2.40 0–1 — — -0.01 — — — — — — — — — — — — — — — —
1992 1561 105.4 — — — — -52 — — 26.7% -1.67 1–2 (33%) 1–0 — +0.03 — — — — — — — — — — — — — — — —
1993 1511 98.5 — — — — -47 — — 20.0% -2.70 0–2 0–1 — +0.17 — — — — — — — — — — — — — — — —
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 Career 1850 139.7 — — — — +22 -251 -124 47.3% -0.20 63–57 (53%) 39–25 (61%) 108.6 +0.74

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.