H2H data updated: 2026-09-12 00:00 UTC

Donna Ganz vs Sandy Stap H2H: 1-0

Donna Ganz holds a 1–0 lead over Sandy Stap in their WTA head-to-head. Across 1 main-draw meeting, Donna Ganz leads 1–0 on clay. Most recently, Donna Ganz won the 1973 Raleigh quarterfinal 6-1 6-3.

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Donna Ganz
USA 157 cm / 5'2"
H2H
1 – 0
1 main-draw meetings
Sandy Stap
USA Age 70 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Donna Ganz 6-1 6-3 Sandy Stap Match data Jun 30, 1973* QF Raleigh 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
Donna Ganz — — — 1,744 42 52 44.7% 0 0 0 0 1 1
Sandy Stap — — — 1,635 25 33 43.1% 0 0 0 0 1 1

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.

Donna Ganz Sandy Stap
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1970 0–1 0.0% — 1,483 0 0 1971 0–2 0.0% — 1,482 0 0
1971 1–1 50.0% — 1,493 0 0 1972 2–4 33.3% — 1,493 0 0
1972 1–3 25.0% — 1,471 0 0 1973 2–6 25.0% — 1,446 0 0
1973 3–4 42.9% — 1,504 0 0 1974 7–7 50.0% — 1,508 0 0
1974 12–16 42.9% — 1,561 0 0 1975 10–7 58.8% — 1,615 0 1
1975 17–12 58.6% — 1,720 0 1 1976 0–1 0.0% — 1,594 0 1
1976 0–4 0.0% — 1,680 0 1 1978 3–3 50.0% — 1,579 0 1
1977 6–5 54.5% — 1,669 0 1 1979 1–3 25.0% — 1,541 0 1
1978 1–4 20.0% — 1,646 0 1 — — — — — — —
1980 1–2 33.3% — 1,615 0 1 — — — — — — —

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.

Donna Ganz Sandy Stap
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 %
1970 — — — — 0 1 1 0.0% — — — — — — — — 1971 — — — — 0 1 1 0.0% 0 1 1 0.0% — — — —
1971 — — — — 1 1 2 50.0% — — — — — — — — 1972 — — — — 1 1 2 50.0% 1 3 4 25.0% — — — —
1972 — — — — 1 2 3 33.3% — — — — — — — — 1973 1 2 3 33.3% 1 3 4 25.0% 0 1 1 0.0% — — — —
1973 — — — — 3 4 7 42.9% — — — — — — — — 1974 — — — — 4 4 8 50.0% 0 1 1 0.0% 0 1 1 0.0%
1974 0 2 2 0.0% 7 9 16 43.8% 2 2 4 50.0% 3 3 6 50.0% 1975 — — — — 1 3 4 25.0% 5 0 5 100.0% — — — —
1975 0 1 1 0.0% 17 8 25 68.0% 0 1 1 0.0% 0 2 2 0.0% 1976 — — — — 0 1 1 0.0% — — — — — — — —
1976 0 1 1 0.0% — — — — — — — — 0 3 3 0.0% 1978 — — — — 0 1 1 0.0% — — — — — — — —
1977 — — — — 1 3 4 25.0% — — — — — — — — 1979 1 1 2 50.0% — — — — — — — — 0 2 2 0.0%
1978 1 1 2 50.0% 0 2 2 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
1980 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career 2 6 8 25.0% 30 30 60 50.0% 2 4 6 33.3% 3 8 11 27.3% Career 2 3 5 40.0% 7 14 21 33.3% 6 6 12 50.0% 0 3 3 0.0%

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.

Donna Ganz Sandy Stap
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
1970 1483 97.1 — — — — — — — 33.3% -2.33 0–1 — — +0.30 1971 1482 103.5 — — — — — — — 20.0% -0.80 0–1 — — +0.01
1971 1493 101.5 — — — — — — — 50.0% -1.00 — — — +0.23 1972 1493 112.1 — — — — — — +17 35.7% -0.86 1–1 — — +0.03
1972 1471 99.7 — — — — — +32 — 33.3% -1.67 0–1 1–0 — +0.36 1973 1446 101.0 — — — — +92 +47 — 27.8% -0.89 1–1 0–1 — +1.70
1973 1504 117.4 — — — — — +21 — 47.1% +0.18 1–2 (33%) 0–1 — +0.33 1974 1509 118.2 — — — — — +31 — 53.1% +0.56 1–3 (25%) 0–1 — +0.89
1974 1562 121.6 — — — — +2 -10 +10 41.9% -0.76 4–4 (50%) 2–5 (29%) 97.5 +0.22 1975 1615 126.2 — — — — — -83 -11 59.0% +0.36 2–3 (40%) 2–1 (67%) 101.9 +0.52
1975 1721 140.7 — — — — -125 +40 — 59.3% +0.78 2–1 (67%) 0–3 (0%) 99.2 +0.04 1976 1595 99.7 — — — — — — — 33.3% -0.33 0–1 — — +0.15
1976 1681 92.8 — — — — -172 — — 11.1% -3.89 0–1 — — -0.30 1978 1580 104.8 — — — — — — — 46.7% +0.20 2–1 (67%) 1–1 — +0.18
1977 1669 120.3 — — — — — +40 — 55.6% +0.15 2–3 (40%) 3–0 (100%) 100.5 +0.15 1979 1541 95.0 — — — — -5 — — 33.3% -0.89 0–1 — — +1.26
1978 1647 112.1 — — — — — — — 25.0% -2.25 1–1 — — -0.60 — — — — — — — — — — — — — — — —
1980 1616 96.7 — — — — — — — 37.5% -0.62 1–1 0–1 — +0.22 — — — — — — — — — — — — — — — —
Career 1744 127.8 — — — — -70 +23 +10 46.2% -0.41 11–15 (42%) 6–10 (38%) 93.5 +1.01 Career 1636 118.0 — — — — +37 +7 +1 45.9% -0.05 7–12 (37%) 3–4 (43%) 96.0 +8.17

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.