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

Janet Haas vs Donna Ganz H2H: 0-1

Donna Ganz holds a 1–0 lead over Janet Haas in their WTA head-to-head. Across 1 main-draw meeting, Donna Ganz leads 1–0 on clay. Most recently, Donna Ganz won the 1975 Italian Open round of 64 6-1 6-2.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Janet Haas
USA
H2H
0 – 1
1 main-draw meetings
Donna Ganz
USA 157 cm / 5'2"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Donna Ganz 6-1 6-2 Janet Haas Match data May 28, 1975* R64 Italian Open 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
Janet Haas — — — 1,622 30 43 41.1% 0 0 0 0 0 0
Donna Ganz — — — 1,744 42 52 44.7% 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.

Janet Haas Donna Ganz
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1972 6–7 46.2% — 1,516 0 0 1970 0–1 0.0% — 1,483 0 0
1973 9–13 40.9% — 1,567 0 0 1971 1–1 50.0% — 1,493 0 0
1974 9–15 37.5% — 1,524 0 0 1972 1–3 25.0% — 1,471 0 0
1975 4–7 36.4% — 1,487 0 0 1973 3–4 42.9% — 1,504 0 0
1980 2–1 66.7% — 1,505 0 0 1974 12–16 42.9% — 1,561 0 0
— — — — — — — 1975 17–12 58.6% — 1,720 0 1
— — — — — — — 1976 0–4 0.0% — 1,680 0 1
— — — — — — — 1977 6–5 54.5% — 1,669 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.

Janet Haas Donna Ganz
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 %
1972 — — — — 5 5 10 50.0% 1 2 3 33.3% — — — — 1970 — — — — 0 1 1 0.0% — — — — — — — —
1973 0 1 1 0.0% 7 10 17 41.2% 2 2 4 50.0% — — — — 1971 — — — — 1 1 2 50.0% — — — — — — — —
1974 0 1 1 0.0% 5 7 12 41.7% 2 4 6 33.3% 2 2 4 50.0% 1972 — — — — 1 2 3 33.3% — — — — — — — —
1975 — — — — 3 4 7 42.9% 0 1 1 0.0% — — — — 1973 — — — — 3 4 7 42.9% — — — — — — — —
1980 — — — — 2 1 3 66.7% — — — — — — — — 1974 0 2 2 0.0% 7 9 16 43.8% 2 2 4 50.0% 3 3 6 50.0%
— — — — — — — — — — — — — — — — — 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% — — — — — — — — 0 3 3 0.0%
— — — — — — — — — — — — — — — — — 1977 — — — — 1 3 4 25.0% — — — — — — — —
— — — — — — — — — — — — — — — — — 1978 1 1 2 50.0% 0 2 2 0.0% 0 1 1 0.0% — — — —
— — — — — — — — — — — — — — — — — 1980 1 1 2 50.0% — — — — — — — — — — — —
Career 0 2 2 0.0% 22 27 49 44.9% 5 9 14 35.7% 2 2 4 50.0% Career 2 6 8 25.0% 30 30 60 50.0% 2 4 6 33.3% 3 8 11 27.3%

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.

Janet Haas Donna Ganz
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
1972 1516 107.8 — — — — — +19 +19 42.3% -0.61 1–1 0–1 — +1.01 1970 1483 97.1 — — — — — — — 33.3% -2.33 0–1 — — +0.30
1973 1568 116.9 — — — — — +4 -23 43.5% -0.72 2–2 (50%) 2–0 — +1.09 1971 1493 101.5 — — — — — — — 50.0% -1.00 — — — +0.23
1974 1524 110.3 — — — — +16 +3 +20 40.0% -0.76 2–2 (50%) — — +2.00 1972 1471 99.7 — — — — — +32 — 33.3% -1.67 0–1 1–0 — +0.36
1975 1487 101.2 — — — — — +24 — 30.4% -1.48 2–1 (67%) 2–1 (67%) 102.5 +0.84 1973 1504 117.4 — — — — — +21 — 47.1% +0.18 1–2 (33%) 0–1 — +0.33
1980 1506 104.8 — — — — — +17 — 66.7% +1.50 — — — +0.38 1974 1562 121.6 — — — — +2 -10 +10 41.9% -0.76 4–4 (50%) 2–5 (29%) 97.5 +0.22
— — — — — — — — — — — — — — — — 1975 1721 140.7 — — — — -125 +40 — 59.3% +0.78 2–1 (67%) 0–3 (0%) 99.2 +0.04
— — — — — — — — — — — — — — — — 1976 1681 92.8 — — — — -172 — — 11.1% -3.89 0–1 — — -0.30
— — — — — — — — — — — — — — — — 1977 1669 120.3 — — — — — +40 — 55.6% +0.15 2–3 (40%) 3–0 (100%) 100.5 +0.15
— — — — — — — — — — — — — — — — 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 1622 112.6 — — — — +16 +10 +7 41.1% -0.74 7–6 (54%) 4–2 (67%) 103.4 +7.71 Career 1744 127.8 — — — — -70 +23 +10 46.2% -0.41 11–15 (42%) 6–10 (38%) 93.5 +1.01

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.