H2H data updated: 2026-09-14 00:00 UTC

Valerie Ziegenfuss vs Betty Ann Grubb H2H: 1-0

Valerie Ziegenfuss holds a 1–0 lead over Betty Ann Grubb in their WTA head-to-head. Across 1 main-draw meeting, Valerie Ziegenfuss leads 1–0 on carpet. Most recently, Valerie Ziegenfuss won the 1974 Tokyo Sillook round robin 6-2 6-4.

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Valerie Ziegenfuss
USA Age 77
H2H
1 – 0
1 main-draw meetings
Betty Ann Grubb
USA

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Valerie Ziegenfuss 6-2 6-4 Betty Ann Grubb Match data Oct 21, 1974 RR Tokyo Sillook WTA 250 Carpet

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
Valerie Ziegenfuss — — — 1,954 231 232 49.9% 0 0 0 0 3 3
Betty Ann Grubb — — — 1,824 124 112 52.5% 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.

Valerie Ziegenfuss Betty Ann Grubb
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1968 35–24 59.3% — 1,605 0 0 1968 21–8 72.4% — 1,633 0 2
1969 28–24 53.8% — 1,733 0 1 1969 29–14 67.4% — 1,777 0 4
1970 40–28 58.8% — 1,779 0 2 1970 18–15 54.5% — 1,684 0 4
1971 23–29 44.2% — 1,798 0 3 1971 5–11 31.2% — 1,679 0 4
1972 26–24 52.0% — 1,820 0 3 1972 2–2 50.0% — 1,673 0 5
1973 33–29 53.2% — 1,761 0 3 1973 4–4 50.0% — 1,699 0 6
1974 12–14 46.2% — 1,788 0 3 1974 7–10 41.2% — 1,675 0 6
1975 16–16 50.0% — 1,830 0 3 1975 5–4 55.6% — 1,728 0 6
1976 12–20 37.5% — 1,746 0 3 1976 2–4 33.3% — 1,683 0 6
1977 2–12 14.3% — 1,677 0 3 1977 0–2 0.0% — 1,652 0 6
1978 3–11 21.4% — 1,654 0 3 1978 3–1 75.0% — 1,660 0 6
1979 1–1 50.0% — 1,667 0 3 1979 25–26 49.0% — 1,816 0 6
— — — — — — — 1980 2–9 18.2% — 1,721 0 6
— — — — — — — 1981 1–2 33.3% — 1,709 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.

Valerie Ziegenfuss Betty Ann Grubb
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 %
1968 5 4 9 55.6% 16 9 25 64.0% 13 9 22 59.1% 1 2 3 33.3% 1968 9 2 11 81.8% 10 3 13 76.9% 2 3 5 40.0% — — — —
1969 5 6 11 45.5% 12 8 20 60.0% 10 8 18 55.6% 1 2 3 33.3% 1969 10 3 13 76.9% — — — — 14 9 23 60.9% 2 2 4 50.0%
1970 12 7 19 63.2% 13 8 21 61.9% 12 8 20 60.0% 2 3 5 40.0% 1970 6 3 9 66.7% 5 4 9 55.6% 5 6 11 45.5% 1 1 2 50.0%
1971 4 6 10 40.0% 10 7 17 58.8% 6 6 12 50.0% 3 10 13 23.1% 1971 2 3 5 40.0% 2 3 5 40.0% 1 2 3 33.3% 0 3 3 0.0%
1972 6 4 10 60.0% 9 7 16 56.3% 4 4 8 50.0% 7 9 16 43.8% 1972 0 2 2 0.0% — — — — — — — — — — — —
1973 5 6 11 45.5% 6 6 12 50.0% 8 4 12 66.7% 12 12 24 50.0% 1973 3 2 5 60.0% — — — — — — — — 1 2 3 33.3%
1974 3 4 7 42.9% 0 1 1 0.0% 0 1 1 0.0% 9 8 17 52.9% 1974 6 5 11 54.5% 1 2 3 33.3% — — — — 0 3 3 0.0%
1975 8 6 14 57.1% 3 3 6 50.0% 1 1 2 50.0% 4 6 10 40.0% 1975 5 3 8 62.5% — — — — — — — — 0 1 1 0.0%
1976 3 3 6 50.0% 4 8 12 33.3% 4 4 8 50.0% 1 5 6 16.7% 1976 2 3 5 40.0% 0 1 1 0.0% — — — — — — — —
1977 0 1 1 0.0% 0 4 4 0.0% 0 1 1 0.0% 2 6 8 25.0% 1977 — — — — 0 1 1 0.0% — — — — 0 1 1 0.0%
1978 0 4 4 0.0% 3 3 6 50.0% 0 2 2 0.0% 0 2 2 0.0% 1979 8 9 17 47.1% 4 4 8 50.0% 9 6 15 60.0% 4 7 11 36.4%
1979 1 1 2 50.0% — — — — — — — — — — — — 1980 0 1 1 0.0% 0 1 1 0.0% 2 2 4 50.0% 0 5 5 0.0%
— — — — — — — — — — — — — — — — — 1981 1 2 3 33.3% — — — — — — — — — — — —
Career 52 52 104 50.0% 76 64 140 54.3% 58 48 106 54.7% 42 65 107 39.3% Career 52 38 90 57.8% 22 19 41 53.7% 33 28 61 54.1% 8 25 33 24.2%

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.

Valerie Ziegenfuss Betty Ann Grubb
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
1968 1605 119.1 — — — — -45 +58 +13 57.4% +0.80 9–4 (69%) — — -0.64 1968 1633 121.5 — — — — +94 +16 -113 69.8% +1.56 3–2 (60%) — — 0.00
1969 1734 126.4 — — — — -175 -30 +9 51.4% +0.32 6–3 (67%) — — -2.24 1969 1777 129.3 — — — — +55 — -18 64.1% +0.96 5–3 (63%) — — +1.73
1970 1780 133.1 — — — — -34 -31 +26 55.6% +0.45 11–4 (73%) 0–1 — -2.50 1970 1685 118.2 — — — — +114 -50 +6 53.4% +0.34 4–3 (57%) 1–0 — +0.50
1971 1799 143.5 — — — — -114 +2 0 46.0% -0.35 5–8 (38%) 3–2 (60%) 99.7 -6.44 1971 1680 131.9 — — — — +54 -42 +16 25.0% -1.81 2–0 0–2 — -2.09
1972 1821 139.7 — — — — -47 -20 -41 48.2% +0.09 9–3 (75%) 4–4 (50%) 105.3 -5.05 1972 1673 104.5 — — — — — — — 50.0% 0.00 — — — -0.16
1973 1761 143.5 — — — — -2 +54 +48 54.3% +0.18 7–9 (44%) 4–5 (44%) 95.0 -5.77 1973 1700 124.2 — — — — +39 — — 47.1% -0.35 1–0 0–1 — +0.31
1974 1789 134.2 — — — — +8 — — 46.6% -0.29 3–3 (50%) 0–3 (0%) 97.0 -2.64 1974 1676 118.4 — — — — -14 -33 — 47.2% +0.08 1–3 (25%) 0–5 (0%) 92.5 -0.32
1975 1830 135.8 — — — — +53 -30 — 49.3% -0.35 6–5 (55%) 2–2 (50%) 99.8 -0.81 1975 1728 114.2 — — — — +19 — — 47.4% -0.31 2–1 (67%) 2–1 (67%) 101.9 +0.34
1976 1746 126.6 — — — — +34 -51 +32 41.1% -0.78 3–6 (33%) 3–2 (60%) 97.3 -2.74 1976 1684 105.1 — — — — +18 — — 33.3% -0.58 — 0–2 — +0.77
1977 1678 124.2 — — — — +10 -22 — 16.7% -2.17 1–1 1–3 (25%) — -1.87 1977 1653 100.1 — — — — — — — 20.0% -1.00 0–1 0–1 — +0.17
1978 1654 130.9 — — — — -20 +22 — 29.4% -1.50 2–4 (33%) 3–1 (75%) 99.1 -2.61 1978 1660 112.4 — — — — — — — 75.0% +2.63 — — — +0.35
1979 1667 111.1 — — — — — — — 40.0% -0.20 1–0 0–1 — -0.15 1979 1817 140.6 — — — — -45 -172 -41 45.3% -0.42 12–5 (71%) 5–5 (50%) 106.5 -0.93
— — — — — — — — — — — — — — — — 1980 1722 127.1 — — — — -73 — +67 33.3% -1.07 2–5 (29%) 1–2 (33%) 95.6 -1.30
— — — — — — — — — — — — — — — — 1981 1709 110.6 — — — — -33 — — 33.3% -0.50 — 0–1 — -0.04
Career 1954 139.2 — — — — -28 -1 +15 49.3% -0.01 63–50 (56%) 20–24 (45%) 101.1 -7.31 Career 1825 133.9 — — — — +19 -51 -20 51.1% +0.14 32–23 (58%) 9–20 (31%) 97.8 -0.29

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.