H2H data updated: 2026-09-08 00:00 UTC
Mary Ann Eisel holds a 2–1 lead over Kathleen Harter in their WTA head-to-head. Across 3 main-draw meetings, Kathleen Harter leads 1–0 on carpet, while Mary Ann Eisel leads 1–0 on clay. Most recently, Mary Ann Eisel won the 1970 Caracas semifinal 6-1 6-1.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Mary Ann Eisel | 6-1 6-1 | Kathleen Harter | Match data | Mar 15, 1970* | SF | Caracas | WTA 250 | Clay |
| Mary Ann Eisel | 6-2 7-5 | Kathleen Harter | Match data | Aug 19, 1968* | F | Baltimore | WTA 250 | Grass |
| Kathleen Harter | 6-4 6-1 | Mary Ann Eisel | Match data | Mar 30, 1968* | R16 | New York | 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kathleen Harter | — | — | — | 1,746 | 106 | 103 | 50.7% | 0 | 0 | 0 | 0 | 2 | 2 |
| Mary Ann Eisel | — | — | — | 1,956 | 172 | 95 | 64.4% | 0 | 0 | 0 | 0 | 12 | 12 |
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Kathleen Harter | Mary Ann Eisel | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 21 | 1968 | 40–22 | 64.5% | — | 1,690 | 0 | 0 | 1968 | 45–22 | 67.2% | — | 1,772 | 0 | 3 |
| 22 | 1969 | 1–1 | 50.0% | — | 1,685 | 0 | 0 | 1969 | 54–23 | 70.1% | — | 1,820 | 0 | 7 |
| 23 | 1970 | 23–20 | 53.5% | — | 1,678 | 0 | 0 | 1970 | 33–20 | 62.3% | — | 1,784 | 0 | 11 |
| 24 | 1971 | 9–2 | 81.8% | — | 1,732 | 0 | 2 | 1971 | 26–19 | 57.8% | — | 1,870 | 0 | 11 |
| 25 | — | — | — | — | — | — | — | 1972 | 3–6 | 33.3% | — | 1,832 | 0 | 11 |
| 26 | — | — | — | — | — | — | — | 1973 | 2–1 | 66.7% | — | 1,844 | 0 | 11 |
| 27 | 1974 | 4–5 | 44.4% | — | 1,729 | 0 | 2 | 1974 | 7–2 | 77.8% | — | 1,865 | 0 | 12 |
| 28 | 1975 | 6–8 | 42.9% | — | 1,664 | 0 | 2 | 1975 | 1–1 | 50.0% | — | 1,856 | 0 | 12 |
| 29 | 1976 | 9–16 | 36.0% | — | 1,615 | 0 | 2 | 1976 | 1–1 | 50.0% | — | 1,844 | 0 | 12 |
| 30 | 1977 | 12–20 | 37.5% | — | 1,644 | 0 | 2 | — | — | — | — | — | — | — |
| 31 | 1978 | 2–9 | 18.2% | — | 1,591 | 0 | 2 | — | — | — | — | — | — | — |
Seasons are aligned by the age each player spent most of that calendar year. 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.
| Age | Kathleen Harter | Mary Ann Eisel | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 21 | 1968 | 12 | 5 | 17 | 70.6% | 11 | 6 | 17 | 64.7% | 16 | 9 | 25 | 64.0% | 1 | 2 | 3 | 33.3% | 1968 | 4 | 3 | 7 | 57.1% | 3 | 3 | 6 | 50.0% | 27 | 9 | 36 | 75.0% | 11 | 7 | 18 | 61.1% |
| 22 | 1969 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | 1969 | 1 | 3 | 4 | 25.0% | 17 | 8 | 25 | 68.0% | 26 | 7 | 33 | 78.8% | 10 | 5 | 15 | 66.7% |
| 23 | 1970 | 6 | 4 | 10 | 60.0% | 7 | 7 | 14 | 50.0% | 8 | 8 | 16 | 50.0% | — | — | — | — | 1970 | 5 | 1 | 6 | 83.3% | 10 | 8 | 18 | 55.6% | 13 | 7 | 20 | 65.0% | 4 | 2 | 6 | 66.7% |
| 24 | 1971 | 1 | 1 | 2 | 50.0% | — | — | — | — | 8 | 1 | 9 | 88.9% | — | — | — | — | 1971 | 4 | 3 | 7 | 57.1% | 8 | 4 | 12 | 66.7% | 7 | 4 | 11 | 63.6% | 7 | 8 | 15 | 46.7% |
| 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1972 | — | — | — | — | — | — | — | — | 2 | 2 | 4 | 50.0% | 1 | 4 | 5 | 20.0% |
| 26 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1973 | — | — | — | — | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — |
| 27 | 1974 | 2 | 2 | 4 | 50.0% | 1 | 1 | 2 | 50.0% | 0 | 1 | 1 | 0.0% | 1 | 1 | 2 | 50.0% | 1974 | — | — | — | — | 6 | 0 | 6 | 100.0% | — | — | — | — | 1 | 2 | 3 | 33.3% |
| 28 | 1975 | — | — | — | — | 1 | 1 | 2 | 50.0% | 3 | 2 | 5 | 60.0% | 0 | 1 | 1 | 0.0% | 1975 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1976 | 0 | 1 | 1 | 0.0% | 3 | 9 | 12 | 25.0% | 5 | 5 | 10 | 50.0% | 1 | 1 | 2 | 50.0% | 1976 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 1977 | 2 | 4 | 6 | 33.3% | 2 | 6 | 8 | 25.0% | 5 | 7 | 12 | 41.7% | 3 | 3 | 6 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 1978 | 1 | 2 | 3 | 33.3% | 0 | 1 | 1 | 0.0% | 1 | 2 | 3 | 33.3% | 0 | 4 | 4 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 25 | 20 | 45 | 55.6% | 25 | 31 | 56 | 44.6% | 46 | 35 | 81 | 56.8% | 6 | 12 | 18 | 33.3% | — | 16 | 12 | 28 | 57.1% | 46 | 24 | 70 | 65.7% | 75 | 29 | 104 | 72.1% | 34 | 28 | 62 | 54.8% |
Seasons are aligned by the age each player spent most of that calendar year. 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.
| Age | Kathleen Harter | Mary Ann Eisel | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 21 | 1968 | 1691 | 124.1 | — | — | — | — | +5 | -60 | +10 | 63.4% | +1.09 | 6–5 (55%) | — | — | 0.00 | 1968 | 1773 | 127.8 | — | — | — | — | -14 | -244 | +92 | 60.9% | +0.93 | 17–7 (71%) | — | — | -1.99 |
| 22 | 1969 | 1686 | 102.9 | — | — | — | — | — | — | — | 40.0% | -0.20 | 1–0 | — | — | +0.23 | 1969 | 1820 | 139.1 | — | — | — | — | -21 | -61 | +133 | 65.7% | +1.05 | 15–9 (63%) | — | — | -5.01 |
| 23 | 1970 | 1678 | 122.9 | — | — | — | — | +41 | -69 | +30 | 53.1% | +0.10 | 5–7 (42%) | 2–0 | — | +0.91 | 1970 | 1785 | 131.6 | — | — | — | — | +107 | -54 | +100 | 60.3% | +0.69 | 10–8 (56%) | 1–0 | — | -1.37 |
| 24 | 1971 | 1732 | 126.5 | — | — | — | — | — | — | +71 | 79.2% | +2.54 | 1–1 | — | — | +2.89 | 1971 | 1871 | 144.6 | — | — | — | — | +33 | -38 | +3 | 55.4% | +0.21 | 7–6 (54%) | 5–6 (45%) | 100.6 | -4.54 |
| 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1972 | 1833 | 126.1 | — | — | — | — | +22 | — | -11 | 45.8% | -0.04 | 1–5 (17%) | 1–1 | — | -1.40 |
| 26 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1973 | 1844 | 115.8 | — | — | — | — | — | +7 | — | 66.7% | +1.33 | — | — | — | -0.50 |
| 27 | 1974 | 1729 | 112.1 | — | — | — | — | -17 | — | — | 42.1% | -1.16 | 1–2 (33%) | 1–0 | — | -0.51 | 1974 | 1865 | 125.8 | — | — | — | — | -56 | +61 | — | 76.2% | +1.67 | 1–2 (33%) | 1–2 (33%) | — | -0.04 |
| 28 | 1975 | 1665 | 112.0 | — | — | — | — | — | — | +97 | 44.1% | -0.82 | 3–3 (50%) | 1–1 | — | +0.39 | 1975 | 1857 | 107.1 | — | — | — | — | — | — | — | 50.0% | +0.50 | 1–1 | — | — | -0.07 |
| 29 | 1976 | 1615 | 122.9 | — | — | — | — | +60 | -57 | +152 | 41.7% | -0.45 | 3–7 (30%) | 4–5 (44%) | 95.7 | +0.03 | 1976 | 1845 | 104.6 | — | — | — | — | — | — | — | 50.0% | +0.50 | 1–1 | — | — | +0.12 |
| 30 | 1977 | 1644 | 127.2 | — | — | — | — | +49 | -96 | +72 | 37.5% | -0.88 | 5–3 (63%) | 2–4 (33%) | 101.5 | +0.34 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 31 | 1978 | 1592 | 110.8 | — | — | — | — | +42 | — | +109 | 24.0% | -1.40 | 1–2 (33%) | 1–5 (17%) | 95.6 | -0.07 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1746 | 127.1 | — | — | — | — | +25 | -67 | +57 | 50.6% | +0.08 | 26–30 (46%) | 11–15 (42%) | 95.9 | +2.03 | — | 1956 | 139.2 | — | — | — | — | +14 | -58 | +93 | 61.0% | +0.78 | 53–39 (58%) | 8–9 (47%) | 103.3 | -5.67 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Judy Tegart | 0 | 5 | 5 | Oct 2, 1970 | H2H |
| Pam Teeguarden | 2 | 2 | 4 | Aug 12, 1977 | H2H |
| Valerie Ziegenfuss | 2 | 2 | 4 | Oct 6, 1976 | H2H |
| Peaches Bartkowicz | 1 | 3 | 4 | Apr 12, 1970 | H2H |
| Billie Jean King | 0 | 3 | 3 | Feb 23, 1978 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Billie Jean King | 0 | 8 | 8 | May 8, 1972 | H2H |
| Judy Tegart | 4 | 4 | 8 | Feb 2, 1971 | H2H |
| Rosie Casals | 1 | 6 | 7 | Aug 29, 1971 | H2H |
| Patti Hogan | 6 | 1 | 7 | May 30, 1970 | H2H |
| Kerry Reid | 1 | 5 | 6 | Sep 15, 1973 | H2H |