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

Valerie Ziegenfuss vs Darlene Hard H2H: 0-1

Darlene Hard holds a 1–0 lead over Valerie Ziegenfuss in their WTA head-to-head. Across 1 main-draw meeting, Darlene Hard leads 1–0 on grass. Most recently, Darlene Hard won the 1970 US Open round of 64 3-6 6-4 6-4.

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Valerie Ziegenfuss
USA Age 77
H2H
0 – 1
1 main-draw meetings
Darlene Hard
USA Age 90 Right-Handed 170 cm / 5'7"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Darlene Hard 3-6 6-4 6-4 Valerie Ziegenfuss Match data Sep 5, 1970* R64 US Open Grand Slam 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
Valerie Ziegenfuss — — — 1,954 231 232 49.9% 0 0 0 0 3 3
Darlene Hard — — — 1,587 8 12 40.0% 0 0 0 0 0 0

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 Valerie Ziegenfuss Darlene Hard
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 1970 40–28 58.8% — 1,779 0 2 — — — — — — —
22 1971 23–29 44.2% — 1,798 0 3 — — — — — — —
23 1972 26–24 52.0% — 1,820 0 3 — — — — — — —
24 1973 33–29 53.2% — 1,761 0 3 — — — — — — —
25 1974 12–14 46.2% — 1,788 0 3 — — — — — — —
26 1975 16–16 50.0% — 1,830 0 3 — — — — — — —
27 1976 12–20 37.5% — 1,746 0 3 — — — — — — —
28 1977 2–12 14.3% — 1,677 0 3 — — — — — — —
29 1978 3–11 21.4% — 1,654 0 3 — — — — — — —
30 1979 1–1 50.0% — 1,667 0 3 — — — — — — —
32 — — — — — — — 1968 1–1 50.0% — 1,511 0 0
33 — — — — — — — 1969 5–4 55.6% — 1,550 0 0
34 — — — — — — — 1970 2–5 28.6% — 1,551 0 0
35 — — — — — — — 1971 0–2 0.0% — 1,542 0 0

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 Valerie Ziegenfuss Darlene Hard
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 1970 1780 133.1 — — — — -34 -31 +26 55.6% +0.45 11–4 (73%) 0–1 — -2.50 — — — — — — — — — — — — — — — —
22 1971 1799 143.5 — — — — -114 +2 0 46.0% -0.35 5–8 (38%) 3–2 (60%) 99.7 -6.44 — — — — — — — — — — — — — — — —
23 1972 1821 139.7 — — — — -47 -20 -41 48.2% +0.09 9–3 (75%) 4–4 (50%) 105.3 -5.05 — — — — — — — — — — — — — — — —
24 1973 1761 143.5 — — — — -2 +54 +48 54.3% +0.18 7–9 (44%) 4–5 (44%) 95.0 -5.77 — — — — — — — — — — — — — — — —
25 1974 1789 134.2 — — — — +8 — — 46.6% -0.29 3–3 (50%) 0–3 (0%) 97.0 -2.64 — — — — — — — — — — — — — — — —
26 1975 1830 135.8 — — — — +53 -30 — 49.3% -0.35 6–5 (55%) 2–2 (50%) 99.8 -0.81 — — — — — — — — — — — — — — — —
27 1976 1746 126.6 — — — — +34 -51 +32 41.1% -0.78 3–6 (33%) 3–2 (60%) 97.3 -2.74 — — — — — — — — — — — — — — — —
28 1977 1678 124.2 — — — — +10 -22 — 16.7% -2.17 1–1 1–3 (25%) — -1.87 — — — — — — — — — — — — — — — —
29 1978 1654 130.9 — — — — -20 +22 — 29.4% -1.50 2–4 (33%) 3–1 (75%) 99.1 -2.61 — — — — — — — — — — — — — — — —
30 1979 1667 111.1 — — — — — — — 40.0% -0.20 1–0 0–1 — -0.15 — — — — — — — — — — — — — — — —
32 — — — — — — — — — — — — — — — — 1968 1511 102.3 — — — — — — — 50.0% 0.00 — — — -0.05
33 — — — — — — — — — — — — — — — — 1969 1550 106.1 — — — — +44 — — 50.0% -0.06 3–1 (75%) — — +0.41
34 — — — — — — — — — — — — — — — — 1970 1552 119.0 — — — — — -15 — 35.3% -0.76 1–2 (33%) 0–1 — -0.65
35 — — — — — — — — — — — — — — — — 1971 1543 96.7 — — — — — — — 0.0% -3.50 — — — -0.04
Career — 1954 139.2 — — — — -28 -1 +15 49.3% -0.01 63–50 (56%) 20–24 (45%) 101.1 -7.31 — 1588 111.0 — — — — +44 -15 — 39.5% -0.65 4–3 (57%) 0–1 — -1.83

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.