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

Kathy May vs Betty Ann Grubb H2H: 2-0

Kathy May holds a 2–0 lead over Betty Ann Grubb in their WTA head-to-head. Across 2 main-draw meetings, Kathy May leads 1–0 on carpet and 1–0 on grass. Most recently, Kathy May won the 1979 Chichester round of 32 6-7 7-5 6-2.

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Kathy May
USA Age 70 Right-Handed 173 cm / 5'8"
H2H
2 – 0
2 main-draw meetings
Betty Ann Grubb
USA

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kathy May 6-7 7-5 6-2 Betty Ann Grubb Match data Jun 14, 1979* R32 Chichester WTA 250 Grass
Kathy May 6-1 6-4 Betty Ann Grubb Match data Jan 12, 1979* R16 Oakland WTA 250 Carpet

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
Kathy May — — — 1,908 111 89 55.5% 0 0 0 0 6 6
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.

Kathy May Betty Ann Grubb
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1971 0–1 0.0% — 1,497 0 0 1968 21–8 72.4% — 1,633 0 2
1972 4–2 66.7% — 1,536 0 0 1969 29–14 67.4% — 1,777 0 4
1973 6–1 85.7% — 1,626 0 1 1970 18–15 54.5% — 1,684 0 4
1974 16–5 76.2% — 1,713 0 4 1971 5–11 31.2% — 1,679 0 4
1975 14–13 51.9% — 1,748 0 5 1972 2–2 50.0% — 1,673 0 5
1976 15–13 53.6% — 1,812 0 6 1973 4–4 50.0% — 1,699 0 6
1977 14–16 46.7% — 1,802 0 6 1974 7–10 41.2% — 1,675 0 6
1978 21–16 56.8% — 1,829 0 6 1975 5–4 55.6% — 1,728 0 6
1979 15–12 55.6% — 1,829 0 6 1976 2–4 33.3% — 1,683 0 6
1980 4–8 33.3% — 1,731 0 6 1977 0–2 0.0% — 1,652 0 6
1981 1–1 50.0% — 1,713 0 6 1978 3–1 75.0% — 1,660 0 6
1990 1–1 50.0% — 1,705 0 6 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.

Kathy May 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 %
1971 0 1 1 0.0% — — — — — — — — — — — — 1968 9 2 11 81.8% 10 3 13 76.9% 2 3 5 40.0% — — — —
1972 4 2 6 66.7% — — — — — — — — — — — — 1969 10 3 13 76.9% — — — — 14 9 23 60.9% 2 2 4 50.0%
1973 5 0 5 100.0% — — — — 1 1 2 50.0% — — — — 1970 6 3 9 66.7% 5 4 9 55.6% 5 6 11 45.5% 1 1 2 50.0%
1974 7 0 7 100.0% 0 1 1 0.0% 8 3 11 72.7% 1 1 2 50.0% 1971 2 3 5 40.0% 2 3 5 40.0% 1 2 3 33.3% 0 3 3 0.0%
1975 0 1 1 0.0% 4 7 11 36.4% 3 2 5 60.0% 0 1 1 0.0% 1972 0 2 2 0.0% — — — — — — — — — — — —
1976 1 1 2 50.0% 11 6 17 64.7% 0 2 2 0.0% 3 4 7 42.9% 1973 3 2 5 60.0% — — — — — — — — 1 2 3 33.3%
1977 1 2 3 33.3% 7 7 14 50.0% 3 3 6 50.0% 3 4 7 42.9% 1974 6 5 11 54.5% 1 2 3 33.3% — — — — 0 3 3 0.0%
1978 5 5 10 50.0% 6 5 11 54.5% 2 1 3 66.7% 8 5 13 61.5% 1975 5 3 8 62.5% — — — — — — — — 0 1 1 0.0%
1979 6 4 10 60.0% 1 1 2 50.0% 2 3 5 40.0% 6 4 10 60.0% 1976 2 3 5 40.0% 0 1 1 0.0% — — — — — — — —
1980 1 2 3 33.3% — — — — 1 2 3 33.3% 0 3 3 0.0% 1977 — — — — 0 1 1 0.0% — — — — 0 1 1 0.0%
1990 1 1 2 50.0% — — — — — — — — — — — — 1979 8 9 17 47.1% 4 4 8 50.0% 9 6 15 60.0% 4 7 11 36.4%
— — — — — — — — — — — — — — — — — 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 31 19 50 62.0% 29 27 56 51.8% 20 17 37 54.1% 21 22 43 48.8% 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.

Kathy May 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
1971 1497 102.9 — — — — — — — 33.3% -1.00 0–1 — — -0.25 1968 1633 121.5 — — — — +94 +16 -113 69.8% +1.56 3–2 (60%) — — 0.00
1972 1537 105.3 — — — — +66 — — 57.1% +0.71 2–0 — — +1.22 1969 1777 129.3 — — — — +55 — -18 64.1% +0.96 5–3 (63%) — — +1.73
1973 1626 119.7 — — — — +97 — — 76.5% +2.24 2–1 (67%) 1–1 — +1.52 1970 1685 118.2 — — — — +114 -50 +6 53.4% +0.34 4–3 (57%) 1–0 — +0.50
1974 1713 120.9 — — — — +112 — -31 70.8% +1.44 4–2 (67%) 2–1 (67%) 103.0 +4.53 1971 1680 131.9 — — — — +54 -42 +16 25.0% -1.81 2–0 0–2 — -2.09
1975 1749 141.0 — — — — — -194 -46 53.3% +0.27 2–4 (33%) 4–3 (57%) 98.8 -2.15 1972 1673 104.5 — — — — — — — 50.0% 0.00 — — — -0.16
1976 1812 121.0 — — — — -28 -89 — 48.4% -0.44 8–2 (80%) 5–0 (100%) 111.1 -1.24 1973 1700 124.2 — — — — +39 — — 47.1% -0.35 1–0 0–1 — +0.31
1977 1803 147.7 — — — — +22 -55 -100 54.0% -0.14 1–6 (14%) 5–1 (83%) 97.8 -3.29 1974 1676 118.4 — — — — -14 -33 — 47.2% +0.08 1–3 (25%) 0–5 (0%) 92.5 -0.32
1978 1830 146.4 — — — — +43 -105 -94 58.5% +0.80 4–6 (40%) 2–4 (33%) 97.7 -1.49 1975 1728 114.2 — — — — +19 — — 47.4% -0.31 2–1 (67%) 2–1 (67%) 101.9 +0.34
1979 1830 136.1 — — — — +67 — -99 50.0% -0.12 6–2 (75%) 3–1 (75%) 104.8 +0.55 1976 1684 105.1 — — — — +18 — — 33.3% -0.58 — 0–2 — +0.77
1980 1731 114.5 — — — — +40 — -26 39.3% -0.71 1–3 (25%) 1–0 — -0.13 1977 1653 100.1 — — — — — — — 20.0% -1.00 0–1 0–1 — +0.17
1981 1713 106.4 — — — — — — — 60.0% +2.00 0–1 0–1 — +0.05 1978 1660 112.4 — — — — — — — 75.0% +2.63 — — — +0.35
1990 1705 99.6 — — — — — — — 40.0% -0.40 1–0 0–1 — +0.11 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 1909 141.8 — — — — +50 -105 -61 55.0% +0.31 31–28 (53%) 23–13 (64%) 107.6 -0.29 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.