Betty Ann Grubb
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Laura Dupont | 2 | 4 | 6 | Mar 13, 1980 | H2H |
| Billie Jean King | 1 | 5 | 6 | Jan 10, 1980 | H2H |
| Sherry Acker | 4 | 1 | 5 | Sep 3, 1981 | H2H |
| Kerry Reid | 1 | 4 | 5 | Oct 26, 1979 | H2H |
| Esme Emmanuel | 3 | 2 | 5 | Feb 26, 1970 | H2H |
H2H data updated: 2026-09-13 00:00 UTC
Betty Ann Grubb vs Stephanie Defina H2H: 0-4
Stephanie Defina holds a 4–0 lead over Betty Ann Grubb in their WTA head-to-head. Across 4 main-draw meetings, Stephanie Defina leads 3–0 on clay and 1–0 on carpet. Most recently, Stephanie Defina won the 1970 Pompano Beach quarterfinal 6-3 6-1.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Stephanie Defina | 6-3 6-1 | Betty Ann Grubb | Match data | Mar 9, 1970* | QF | Pompano Beach | WTA 250 | Clay |
| Stephanie Defina | 6-2 6-4 | Betty Ann Grubb | Match data | Feb 19, 1969* | QF | Agawam | WTA 250 | Carpet |
| Stephanie Defina | 3-6 6-4 6-4 | Betty Ann Grubb | Match data | Jul 19, 1968* | R16 | Milwaukee | WTA 250 | Clay |
| Stephanie Defina | 6-3 7-5 | Betty Ann Grubb | Match data | Jul 13, 1968* | SF | Indianapolis | WTA 250 | Clay |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Betty Ann Grubb | — | — | — | 1,824 | 124 | 112 | 52.5% | 0 | 0 | 0 | 0 | 6 | 6 |
| Stephanie Defina | — | — | — | 1,818 | 93 | 62 | 60.0% | 0 | 0 | 0 | 0 | 7 | 7 |
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.
| Betty Ann Grubb | Stephanie Defina | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles |
| 1968 | 21–8 | 72.4% | — | 1,633 | 0 | 2 | 1968 | 33–22 | 60.0% | — | 1,678 | 0 | 1 |
| 1969 | 29–14 | 67.4% | — | 1,777 | 0 | 4 | 1969 | 25–9 | 73.5% | — | 1,760 | 0 | 5 |
| 1970 | 18–15 | 54.5% | — | 1,684 | 0 | 4 | 1970 | 33–17 | 66.0% | — | 1,788 | 0 | 7 |
| 1971 | 5–11 | 31.2% | — | 1,679 | 0 | 4 | 1971 | 1–9 | 10.0% | — | 1,706 | 0 | 7 |
| 1972 | 2–2 | 50.0% | — | 1,673 | 0 | 5 | 1972 | 1–2 | 33.3% | — | 1,713 | 0 | 7 |
| 1973 | 4–4 | 50.0% | — | 1,699 | 0 | 6 | 1973 | 0–2 | 0.0% | — | 1,685 | 0 | 7 |
| 1974 | 7–10 | 41.2% | — | 1,675 | 0 | 6 | 1974 | 0–1 | 0.0% | — | 1,674 | 0 | 7 |
| 1975 | 5–4 | 55.6% | — | 1,728 | 0 | 6 | — | — | — | — | — | — | — |
| 1976 | 2–4 | 33.3% | — | 1,683 | 0 | 6 | — | — | — | — | — | — | — |
| 1977 | 0–2 | 0.0% | — | 1,652 | 0 | 6 | — | — | — | — | — | — | — |
| 1978 | 3–1 | 75.0% | — | 1,660 | 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.
| Betty Ann Grubb | Stephanie Defina | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | ||||||||||||||||||||||||
| 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 | 9 | 2 | 11 | 81.8% | 10 | 3 | 13 | 76.9% | 2 | 3 | 5 | 40.0% | — | — | — | — | 1968 | 4 | 6 | 10 | 40.0% | 20 | 7 | 27 | 74.1% | 7 | 7 | 14 | 50.0% | 2 | 2 | 4 | 50.0% |
| 1969 | 10 | 3 | 13 | 76.9% | — | — | — | — | 14 | 9 | 23 | 60.9% | 2 | 2 | 4 | 50.0% | 1969 | 1 | 1 | 2 | 50.0% | 17 | 5 | 22 | 77.3% | — | — | — | — | 6 | 2 | 8 | 75.0% |
| 1970 | 6 | 3 | 9 | 66.7% | 5 | 4 | 9 | 55.6% | 5 | 6 | 11 | 45.5% | 1 | 1 | 2 | 50.0% | 1970 | 4 | 3 | 7 | 57.1% | 26 | 9 | 35 | 74.3% | 1 | 2 | 3 | 33.3% | 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% | 1971 | — | — | — | — | 0 | 2 | 2 | 0.0% | 0 | 1 | 1 | 0.0% | 1 | 6 | 7 | 14.3% |
| 1972 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | 1972 | 1 | 1 | 2 | 50.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 1973 | 3 | 2 | 5 | 60.0% | — | — | — | — | — | — | — | — | 1 | 2 | 3 | 33.3% | 1973 | 0 | 1 | 1 | 0.0% | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 1974 | 6 | 5 | 11 | 54.5% | 1 | 2 | 3 | 33.3% | — | — | — | — | 0 | 3 | 3 | 0.0% | 1974 | — | — | — | — | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 1975 | 5 | 3 | 8 | 62.5% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1976 | 2 | 3 | 5 | 40.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1977 | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 | 52 | 38 | 90 | 57.8% | 22 | 19 | 41 | 53.7% | 33 | 28 | 61 | 54.1% | 8 | 25 | 33 | 24.2% | Career | 10 | 12 | 22 | 45.5% | 63 | 24 | 87 | 72.4% | 8 | 11 | 19 | 42.1% | 11 | 13 | 24 | 45.8% |
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.
| Betty Ann Grubb | Stephanie Defina | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 1633 | 121.5 | — | — | — | — | +94 | +16 | -113 | 69.8% | +1.56 | 3–2 (60%) | — | — | 0.00 | 1968 | 1678 | 117.2 | — | — | — | — | -196 | +95 | -126 | 56.8% | +0.45 | 13–9 (59%) | — | — | -1.36 |
| 1969 | 1777 | 129.3 | — | — | — | — | +55 | — | -18 | 64.1% | +0.96 | 5–3 (63%) | — | — | +1.73 | 1969 | 1761 | 138.3 | — | — | — | — | -91 | +61 | — | 71.6% | +1.86 | 3–3 (50%) | — | — | +0.05 |
| 1970 | 1685 | 118.2 | — | — | — | — | +114 | -50 | +6 | 53.4% | +0.34 | 4–3 (57%) | 1–0 | — | +0.50 | 1970 | 1789 | 133.4 | — | — | — | — | -88 | +98 | -231 | 62.9% | +1.05 | 7–4 (64%) | 1–0 | — | +0.80 |
| 1971 | 1680 | 131.9 | — | — | — | — | +54 | -42 | +16 | 25.0% | -1.81 | 2–0 | 0–2 | — | -2.09 | 1971 | 1707 | 111.7 | — | — | — | — | -58 | — | — | 10.0% | -2.90 | — | — | — | -0.83 |
| 1972 | 1673 | 104.5 | — | — | — | — | — | — | — | 50.0% | 0.00 | — | — | — | -0.16 | 1972 | 1714 | 107.0 | — | — | — | — | — | — | — | 33.3% | -1.83 | — | 1–0 | — | -0.95 |
| 1973 | 1700 | 124.2 | — | — | — | — | +39 | — | — | 47.1% | -0.35 | 1–0 | 0–1 | — | +0.31 | 1973 | 1686 | 100.5 | — | — | — | — | — | — | — | 0.0% | -3.50 | — | — | — | -0.40 |
| 1974 | 1676 | 118.4 | — | — | — | — | -14 | -33 | — | 47.2% | +0.08 | 1–3 (25%) | 0–5 (0%) | 92.5 | -0.32 | 1974 | 1675 | 102.4 | — | — | — | — | — | — | — | 0.0% | -1.50 | — | 0–1 | — | -0.06 |
| 1975 | 1728 | 114.2 | — | — | — | — | +19 | — | — | 47.4% | -0.31 | 2–1 (67%) | 2–1 (67%) | 101.9 | +0.34 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1976 | 1684 | 105.1 | — | — | — | — | +18 | — | — | 33.3% | -0.58 | — | 0–2 | — | +0.77 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1977 | 1653 | 100.1 | — | — | — | — | — | — | — | 20.0% | -1.00 | 0–1 | 0–1 | — | +0.17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 1978 | 1660 | 112.4 | — | — | — | — | — | — | — | 75.0% | +2.63 | — | — | — | +0.35 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 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 | 1825 | 133.9 | — | — | — | — | +19 | -51 | -20 | 51.1% | +0.14 | 32–23 (58%) | 9–20 (31%) | 97.8 | -0.29 | Career | 1819 | 129.6 | — | — | — | — | -120 | +87 | -145 | 57.7% | +0.65 | 23–16 (59%) | 2–1 (67%) | 104.5 | -1.80 |
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.
Stephanie Defina
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Linda Tuero | 2 | 4 | 6 | May 30, 1970 | H2H |
| Valerie Ziegenfuss | 1 | 4 | 5 | Aug 18, 1972 | H2H |
| Mary Ann Eisel | 1 | 4 | 5 | Jan 10, 1971 | H2H |
| Nancy Richey | 1 | 4 | 5 | Apr 11, 1970 | H2H |
| Virginia Wade | 1 | 3 | 4 | Feb 4, 1972 | H2H |