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

Helga Masthoff vs Betty Ann Grubb H2H: 1-0

Helga Masthoff holds a 1–0 lead over Betty Ann Grubb in their WTA head-to-head. Across 1 main-draw meeting, Helga Masthoff leads 1–0 on grass. Most recently, Helga Masthoff won the 1970 Wimbledon round of 16 6-1 6-3.

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Helga Masthoff
FRG Age 84 Right-Handed
H2H
1 – 0
1 main-draw meetings
Betty Ann Grubb
USA

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Helga Masthoff 6-1 6-3 Betty Ann Grubb Match data Jul 1, 1970* R16 Wimbledon Grand Slam 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
Helga Masthoff — — — 2,113 391 115 77.3% 0 0 0 4 46 50
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.

Helga Masthoff Betty Ann Grubb
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1968 29–13 69.0% — 1,730 0 1 1968 21–8 72.4% — 1,633 0 2
1969 45–13 77.6% — 1,906 0 10 1969 29–14 67.4% — 1,777 0 4
1970 53–12 81.5% — 2,047 0 15 1970 18–15 54.5% — 1,684 0 4
1971 42–9 82.4% — 2,084 0 23 1971 5–11 31.2% — 1,679 0 4
1972 29–12 70.7% — 2,023 0 27 1972 2–2 50.0% — 1,673 0 5
1973 40–13 75.5% — 2,087 0 30 1973 4–4 50.0% — 1,699 0 6
1974 27–10 73.0% — 2,019 0 33 1974 7–10 41.2% — 1,675 0 6
1975 25–8 75.8% — 1,998 0 37 1975 5–4 55.6% — 1,728 0 6
1976 34–8 81.0% — 1,950 0 42 1976 2–4 33.3% — 1,683 0 6
1977 18–4 81.8% — 1,941 0 45 1977 0–2 0.0% — 1,652 0 6
1978 13–5 72.2% — 1,895 0 45 1978 3–1 75.0% — 1,660 0 6
1979 10–1 90.9% — 1,930 0 48 1979 25–26 49.0% — 1,816 0 6
1980 26–7 78.8% — 1,873 0 50 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.

Helga Masthoff 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 2 2 4 50.0% 22 7 29 75.9% 1 1 2 50.0% 4 3 7 57.1% 1968 9 2 11 81.8% 10 3 13 76.9% 2 3 5 40.0% — — — —
1969 3 3 6 50.0% 39 7 46 84.8% — — — — 0 1 1 0.0% 1969 10 3 13 76.9% — — — — 14 9 23 60.9% 2 2 4 50.0%
1970 — — — — 45 10 55 81.8% 3 1 4 75.0% 5 1 6 83.3% 1970 6 3 9 66.7% 5 4 9 55.6% 5 6 11 45.5% 1 1 2 50.0%
1971 5 2 7 71.4% 35 5 40 87.5% 2 2 4 50.0% — — — — 1971 2 3 5 40.0% 2 3 5 40.0% 1 2 3 33.3% 0 3 3 0.0%
1972 — — — — 28 8 36 77.8% 0 1 1 0.0% 1 3 4 25.0% 1972 0 2 2 0.0% — — — — — — — — — — — —
1973 — — — — 34 10 44 77.3% 4 1 5 80.0% 2 2 4 50.0% 1973 3 2 5 60.0% — — — — — — — — 1 2 3 33.3%
1974 — — — — 24 8 32 75.0% 3 1 4 75.0% 0 1 1 0.0% 1974 6 5 11 54.5% 1 2 3 33.3% — — — — 0 3 3 0.0%
1975 — — — — 15 6 21 71.4% 9 2 11 81.8% — — — — 1975 5 3 8 62.5% — — — — — — — — 0 1 1 0.0%
1976 — — — — 29 5 34 85.3% 5 3 8 62.5% — — — — 1976 2 3 5 40.0% 0 1 1 0.0% — — — — — — — —
1977 — — — — 13 2 15 86.7% 1 2 3 33.3% 4 0 4 100.0% 1977 — — — — 0 1 1 0.0% — — — — 0 1 1 0.0%
1978 — — — — 8 3 11 72.7% — — — — 3 1 4 75.0% 1979 8 9 17 47.1% 4 4 8 50.0% 9 6 15 60.0% 4 7 11 36.4%
1979 — — — — 5 1 6 83.3% — — — — — — — — 1980 0 1 1 0.0% 0 1 1 0.0% 2 2 4 50.0% 0 5 5 0.0%
1980 — — — — 23 6 29 79.3% — — — — — — — — 1981 1 2 3 33.3% — — — — — — — — — — — —
Career 10 7 17 58.8% 320 78 398 80.4% 28 14 42 66.7% 19 12 31 61.3% 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.

Helga Masthoff 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 1730 128.1 — — — — -162 +89 — 66.7% +1.31 7–8 (47%) — — -1.04 1968 1633 121.5 — — — — +94 +16 -113 69.8% +1.56 3–2 (60%) — — 0.00
1969 1907 137.1 — — — — -313 +115 — 74.0% +1.89 8–7 (53%) — — -0.20 1969 1777 129.3 — — — — +55 — -18 64.1% +0.96 5–3 (63%) — — +1.73
1970 2047 159.4 — — — — -330 +75 -427 79.6% +2.22 6–5 (55%) — — -5.92 1970 1685 118.2 — — — — +114 -50 +6 53.4% +0.34 4–3 (57%) 1–0 — +0.50
1971 2084 146.6 — — — — -311 +124 -455 72.0% +1.78 17–3 (85%) 2–2 (50%) 105.8 -1.82 1971 1680 131.9 — — — — +54 -42 +16 25.0% -1.81 2–0 0–2 — -2.09
1972 2024 152.0 — — — — -290 +162 — 69.4% +1.51 4–1 (80%) 3–0 (100%) — -3.25 1972 1673 104.5 — — — — — — — 50.0% 0.00 — — — -0.16
1973 2088 160.2 — — — — -369 +126 -344 72.2% +1.77 8–3 (73%) 3–5 (38%) 101.3 -2.46 1973 1700 124.2 — — — — +39 — — 47.1% -0.35 1–0 0–1 — +0.31
1974 2019 153.9 — — — — — +99 -212 67.5% +1.24 8–2 (80%) 2–2 (50%) 102.8 -3.17 1974 1676 118.4 — — — — -14 -33 — 47.2% +0.08 1–3 (25%) 0–5 (0%) 92.5 -0.32
1975 1999 142.8 — — — — — +76 -105 71.6% +1.26 7–3 (70%) 6–3 (67%) 104.5 -0.41 1975 1728 114.2 — — — — +19 — — 47.4% -0.31 2–1 (67%) 2–1 (67%) 101.9 +0.34
1976 1951 146.9 — — — — — +125 -61 76.1% +2.14 6–2 (75%) 1–2 (33%) 99.7 +1.10 1976 1684 105.1 — — — — +18 — — 33.3% -0.58 — 0–2 — +0.77
1977 1941 128.5 — — — — -150 +143 -91 75.5% +1.73 4–1 (80%) 3–1 (75%) 103.1 +2.07 1977 1653 100.1 — — — — — — — 20.0% -1.00 0–1 0–1 — +0.17
1978 1895 134.2 — — — — -97 +128 — 68.4% +1.55 2–2 (50%) 1–0 — +1.22 1978 1660 112.4 — — — — — — — 75.0% +2.63 — — — +0.35
1979 1930 131.0 — — — — — +128 — 85.7% +2.86 1–0 1–1 — +0.26 1979 1817 140.6 — — — — -45 -172 -41 45.3% -0.42 12–5 (71%) 5–5 (50%) 106.5 -0.93
1980 1873 133.5 — — — — — +139 — 73.1% +1.86 7–5 (58%) 3–2 (60%) 97.5 +1.56 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 2114 153.3 — — — — -250 +115 -205 72.9% +1.76 85–42 (67%) 25–18 (58%) 104.1 -2.42 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.