H2H data updated: 2026-09-14 00:00 UTC

Helen Gourlay vs Valerie Ziegenfuss H2H: 1-2

Valerie Ziegenfuss holds a 2–1 lead over Helen Gourlay in their WTA head-to-head. Across 3 main-draw meetings, Valerie Ziegenfuss leads 2–0 on carpet, while Helen Gourlay leads 1–0 on grass. Most recently, Valerie Ziegenfuss won the 1975 Sarasota round of 32 6-4 4-6 7-5.

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Helen Gourlay
AUS Age 79
H2H
1 – 2
3 main-draw meetings
Valerie Ziegenfuss
USA Age 77

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Valerie Ziegenfuss 6-4 4-6 7-5 Helen Gourlay Match data Jan 16, 1975* R32 Sarasota WTA 250 Carpet
Valerie Ziegenfuss 6-2 6-3 Helen Gourlay Match data Feb 20, 1972* R16 Oklahoma City WTA 250 Carpet
Helen Gourlay 6-4 6-2 Valerie Ziegenfuss Match data Aug 28, 1970* R16 South Orange WTA 250 Grass

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
Helen Gourlay — — — 1,962 295 201 59.5% 0 0 0 0 7 7
Valerie Ziegenfuss — — — 1,954 231 232 49.9% 0 0 0 0 3 3

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.

Age Helen Gourlay Valerie Ziegenfuss
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 — — — — — — — 1968 35–24 59.3% — 1,605 0 0
20 — — — — — — — 1969 28–24 53.8% — 1,733 0 1
21 1968 48–21 69.6% — 1,678 0 3 1970 40–28 58.8% — 1,779 0 2
22 1969 41–29 58.6% — 1,730 0 5 1971 23–29 44.2% — 1,798 0 3
23 1970 42–22 65.6% — 1,845 0 7 1972 26–24 52.0% — 1,820 0 3
24 1971 46–25 64.8% — 1,907 0 7 1973 33–29 53.2% — 1,761 0 3
25 1972 34–25 57.6% — 1,799 0 7 1974 12–14 46.2% — 1,788 0 3
26 1973 7–13 35.0% — 1,745 0 7 1975 16–16 50.0% — 1,830 0 3
27 1974 30–19 61.2% — 1,942 0 7 1976 12–20 37.5% — 1,746 0 3
28 1975 8–14 36.4% — 1,841 0 7 1977 2–12 14.3% — 1,677 0 3
29 1976 7–7 50.0% — 1,815 0 7 1978 3–11 21.4% — 1,654 0 3
30 1977 24–19 55.8% — 1,897 0 7 1979 1–1 50.0% — 1,667 0 3
31 1978 4–3 57.1% — 1,882 0 7 — — — — — — —
33 1980 4–4 50.0% — 1,796 0 7 — — — — — — —

Surface Results by Age

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 Helen Gourlay Valerie Ziegenfuss
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 %
19 — — — — — — — — — — — — — — — — — 1968 5 4 9 55.6% 16 9 25 64.0% 13 9 22 59.1% 1 2 3 33.3%
20 — — — — — — — — — — — — — — — — — 1969 5 6 11 45.5% 12 8 20 60.0% 10 8 18 55.6% 1 2 3 33.3%
21 1968 — — — — 34 10 44 77.3% 13 10 23 56.5% — — — — 1970 12 7 19 63.2% 13 8 21 61.9% 12 8 20 60.0% 2 3 5 40.0%
22 1969 4 3 7 57.1% 21 11 32 65.6% 13 10 23 56.5% 3 5 8 37.5% 1971 4 6 10 40.0% 10 7 17 58.8% 6 6 12 50.0% 3 10 13 23.1%
23 1970 14 7 21 66.7% 14 9 23 60.9% 14 6 20 70.0% — — — — 1972 6 4 10 60.0% 9 7 16 56.3% 4 4 8 50.0% 7 9 16 43.8%
24 1971 8 4 12 66.7% 14 7 21 66.7% 24 14 38 63.2% — — — — 1973 5 6 11 45.5% 6 6 12 50.0% 8 4 12 66.7% 12 12 24 50.0%
25 1972 4 2 6 66.7% 10 5 15 66.7% 14 10 24 58.3% 6 8 14 42.9% 1974 3 4 7 42.9% 0 1 1 0.0% 0 1 1 0.0% 9 8 17 52.9%
26 1973 3 3 6 50.0% 2 4 6 33.3% 2 5 7 28.6% 0 1 1 0.0% 1975 8 6 14 57.1% 3 3 6 50.0% 1 1 2 50.0% 4 6 10 40.0%
27 1974 8 4 12 66.7% 5 4 9 55.6% 10 6 16 62.5% 7 5 12 58.3% 1976 3 3 6 50.0% 4 8 12 33.3% 4 4 8 50.0% 1 5 6 16.7%
28 1975 0 3 3 0.0% 3 2 5 60.0% 2 4 6 33.3% 3 5 8 37.5% 1977 0 1 1 0.0% 0 4 4 0.0% 0 1 1 0.0% 2 6 8 25.0%
29 1976 — — — — 2 2 4 50.0% 5 3 8 62.5% 0 2 2 0.0% 1978 0 4 4 0.0% 3 3 6 50.0% 0 2 2 0.0% 0 2 2 0.0%
30 1977 2 3 5 40.0% 4 8 12 33.3% 16 6 22 72.7% 0 1 1 0.0% 1979 1 1 2 50.0% — — — — — — — — — — — —
31 1978 — — — — 3 1 4 75.0% 1 2 3 33.3% — — — — — — — — — — — — — — — — — — — — —
33 1980 — — — — — — — — 4 4 8 50.0% — — — — — — — — — — — — — — — — — — — — —
Career — 43 29 72 59.7% 112 63 175 64.0% 118 80 198 59.6% 19 27 46 41.3% — 52 52 104 50.0% 76 64 140 54.3% 58 48 106 54.7% 42 65 107 39.3%

Advanced Statistics Comparison by Age

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 Helen Gourlay Valerie Ziegenfuss
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
19 — — — — — — — — — — — — — — — — 1968 1605 119.1 — — — — -45 +58 +13 57.4% +0.80 9–4 (69%) — — -0.64
20 — — — — — — — — — — — — — — — — 1969 1734 126.4 — — — — -175 -30 +9 51.4% +0.32 6–3 (67%) — — -2.24
21 1968 1678 124.8 — — — — — +138 -25 66.7% +1.23 12–8 (60%) — — +0.47 1970 1780 133.1 — — — — -34 -31 +26 55.6% +0.45 11–4 (73%) 0–1 — -2.50
22 1969 1730 129.9 — — — — -101 +74 0 57.0% +0.54 10–10 (50%) — — -2.37 1971 1799 143.5 — — — — -114 +2 0 46.0% -0.35 5–8 (38%) 3–2 (60%) 99.7 -6.44
23 1970 1845 137.5 — — — — -65 -20 +20 61.9% +0.90 12–7 (63%) 2–1 (67%) 105.2 -3.63 1972 1821 139.7 — — — — -47 -20 -41 48.2% +0.09 9–3 (75%) 4–4 (50%) 105.3 -5.05
24 1971 1908 139.3 — — — — -97 +13 +18 59.3% +0.48 16–4 (80%) 6–4 (60%) 110.6 -3.93 1973 1761 143.5 — — — — -2 +54 +48 54.3% +0.18 7–9 (44%) 4–5 (44%) 95.0 -5.77
25 1972 1799 145.3 — — — — -6 +158 +32 57.0% +0.73 7–5 (58%) 1–5 (17%) 97.7 -4.23 1974 1789 134.2 — — — — +8 — — 46.6% -0.29 3–3 (50%) 0–3 (0%) 97.0 -2.64
26 1973 1745 133.2 — — — — +25 +125 +41 34.9% -1.00 2–3 (40%) 0–2 — -2.97 1975 1830 135.8 — — — — +53 -30 — 49.3% -0.35 6–5 (55%) 2–2 (50%) 99.8 -0.81
27 1974 1943 155.6 — — — — +1 -37 -73 58.2% +0.69 10–6 (63%) 2–2 (50%) 103.5 -7.00 1976 1746 126.6 — — — — +34 -51 +32 41.1% -0.78 3–6 (33%) 3–2 (60%) 97.3 -2.74
28 1975 1841 138.9 — — — — +23 +75 -47 42.3% -0.52 2–6 (25%) 0–3 (0%) — -2.67 1977 1678 124.2 — — — — +10 -22 — 16.7% -2.17 1–1 1–3 (25%) — -1.87
29 1976 1815 132.4 — — — — — +77 +28 50.0% +0.16 2–2 (50%) 1–1 — -0.42 1978 1654 130.9 — — — — -20 +22 — 29.4% -1.50 2–4 (33%) 3–1 (75%) 99.1 -2.61
30 1977 1898 153.8 — — — — -104 -101 +103 57.3% +0.74 3–7 (30%) 0–2 — -2.97 1979 1667 111.1 — — — — — — — 40.0% -0.20 1–0 0–1 — -0.15
31 1978 1883 117.6 — — — — — -72 +76 50.0% -0.37 2–0 1–0 — -0.80 — — — — — — — — — — — — — — — —
33 1980 1797 99.2 — — — — — — +40 42.1% +0.47 3–2 (60%) 0–5 (0%) 94.9 +0.81 — — — — — — — — — — — — — — — —
Career — 1962 144.2 — — — — -37 +58 +16 57.4% +0.59 81–60 (57%) 13–25 (34%) 97.0 -6.03 — 1954 139.2 — — — — -28 -1 +15 49.3% -0.01 63–50 (56%) 20–24 (45%) 101.1 -7.31

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.