H2H data updated: 2026-10-29 00:00 UTC

Glynis Coles vs Valerie Ziegenfuss H2H: 1-0

Glynis Coles holds a 1–0 lead over Valerie Ziegenfuss in their WTA head-to-head. Across 1 main-draw meeting, Glynis Coles leads 1–0 on hard courts. Most recently, Glynis Coles won the 1976 South African Open round of 16 7-6 6-4.

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Glynis Coles
GBR Age 72 Right-Handed 173 cm / 5'8"
H2H
1 – 0
1 main-draw meetings
Valerie Ziegenfuss
USA Age 77

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Glynis Coles 7-6 6-4 Valerie Ziegenfuss Match data Nov 26, 1976* R16 South African Open WTA 250 Hard

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
Glynis Coles — — — 1,829 145 192 43.0% 0 0 0 0 3 3
Valerie Ziegenfuss — — — 1,954 233 233 50.0% 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 Glynis Coles Valerie Ziegenfuss
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 1970 0–1 0.0% — 1,483 0 0 — — — — — — —
17 1971 2–6 25.0% — 1,477 0 0 — — — — — — —
18 1972 15–15 50.0% — 1,595 0 0 — — — — — — —
19 1973 32–19 62.7% — 1,794 0 2 1968 35–24 59.3% — 1,605 0 0
20 1974 21–23 47.7% — 1,694 0 2 1969 28–24 53.8% — 1,733 0 1
21 1975 26–21 55.3% — 1,781 0 3 1970 40–28 58.8% — 1,779 0 2
22 1976 13–20 39.4% — 1,720 0 3 1971 23–29 44.2% — 1,798 0 3
23 1977 13–19 40.6% — 1,672 0 3 1972 26–24 52.0% — 1,820 0 3
24 1978 8–18 30.8% — 1,555 0 3 1973 33–29 53.2% — 1,761 0 3
25 1979 4–6 40.0% — 1,600 0 3 1974 12–14 46.2% — 1,788 0 3
26 1980 4–20 16.7% — 1,461 0 3 1975 16–16 50.0% — 1,830 0 3
27 1981 7–12 36.8% — 1,553 0 3 1976 12–20 37.5% — 1,746 0 3
28 1982 0–11 0.0% — 1,475 0 3 1977 2–12 14.3% — 1,679 0 3
29 — — — — — — — 1978 5–12 29.4% — 1,651 0 3
30 — — — — — — — 1979 1–1 50.0% — 1,664 0 3
32 1986 0–1 0.0% — 1,472 0 3 — — — — — — —

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 Glynis Coles 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 %
16 1970 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
17 1971 — — — — 2 3 5 40.0% 0 1 1 0.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
18 1972 — — — — 5 4 9 55.6% 8 8 16 50.0% 2 3 5 40.0% — — — — — — — — — — — — — — — — —
19 1973 1 1 2 50.0% 11 8 19 57.9% 13 6 19 68.4% 7 4 11 63.6% 1968 5 4 9 55.6% 16 9 25 64.0% 13 9 22 59.1% 1 2 3 33.3%
20 1974 1 2 3 33.3% 8 9 17 47.1% 4 5 9 44.4% 6 6 12 50.0% 1969 5 6 11 45.5% 12 8 20 60.0% 10 8 18 55.6% 1 2 3 33.3%
21 1975 2 3 5 40.0% 16 10 26 61.5% 6 4 10 60.0% 2 4 6 33.3% 1970 12 7 19 63.2% 13 8 21 61.9% 12 8 20 60.0% 2 3 5 40.0%
22 1976 2 3 5 40.0% 8 9 17 47.1% 0 1 1 0.0% 3 7 10 30.0% 1971 4 6 10 40.0% 10 7 17 58.8% 6 6 12 50.0% 3 10 13 23.1%
23 1977 2 3 5 40.0% 6 7 13 46.2% 0 3 3 0.0% 2 4 6 33.3% 1972 6 4 10 60.0% 9 7 16 56.3% 4 4 8 50.0% 7 9 16 43.8%
24 1978 3 6 9 33.3% 3 5 8 37.5% 1 4 5 20.0% 1 3 4 25.0% 1973 5 6 11 45.5% 6 6 12 50.0% 8 4 12 66.7% 12 12 24 50.0%
25 1979 — — — — — — — — 1 3 4 25.0% 2 2 4 50.0% 1974 3 4 7 42.9% 0 1 1 0.0% 0 1 1 0.0% 9 8 17 52.9%
26 1980 1 6 7 14.3% 0 5 5 0.0% 0 2 2 0.0% 3 7 10 30.0% 1975 8 6 14 57.1% 3 3 6 50.0% 1 1 2 50.0% 4 6 10 40.0%
27 1981 3 3 6 50.0% 0 3 3 0.0% 2 1 3 66.7% 2 5 7 28.6% 1976 3 3 6 50.0% 4 8 12 33.3% 4 4 8 50.0% 1 5 6 16.7%
28 1982 0 3 3 0.0% 0 3 3 0.0% 0 2 2 0.0% 0 3 3 0.0% 1977 0 1 1 0.0% 0 4 4 0.0% 0 1 1 0.0% 2 6 8 25.0%
29 — — — — — — — — — — — — — — — — — 1978 2 5 7 28.6% 3 3 6 50.0% 0 2 2 0.0% 0 2 2 0.0%
30 — — — — — — — — — — — — — — — — — 1979 1 1 2 50.0% — — — — — — — — — — — —
32 1986 — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
Career — 15 30 45 33.3% 59 67 126 46.8% 35 41 76 46.1% 30 50 80 37.5% — 54 53 107 50.5% 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 Glynis Coles 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
16 1970 1484 98.5 — — — — — — — 0.0% -2.50 — — — +0.15 — — — — — — — — — — — — — — — —
17 1971 1477 107.5 — — — — — +18 — 29.4% -1.53 0–1 — — -0.08 — — — — — — — — — — — — — — — —
18 1972 1596 123.8 — — — — -44 -42 +3 46.6% -0.12 1–1 1–3 (25%) — +0.62 — — — — — — — — — — — — — — — —
19 1973 1795 138.7 — — — — -82 -146 -24 59.8% +0.77 7–3 (70%) 3–3 (50%) 105.2 +3.27 1968 1605 119.1 — — — — -45 +58 +13 57.4% +0.80 9–4 (69%) — — -0.64
20 1974 1694 129.5 — — — — +21 -45 +27 44.8% -0.37 7–7 (50%) 6–4 (60%) 100.5 -0.55 1969 1734 126.4 — — — — -175 -30 +9 51.4% +0.32 6–3 (67%) — — -2.24
21 1975 1781 139.8 — — — — -63 -41 +17 54.6% +0.27 9–7 (56%) 3–6 (33%) 102.5 -3.69 1970 1780 133.1 — — — — -34 -31 +26 55.6% +0.45 11–4 (73%) 0–1 — -2.50
22 1976 1720 129.7 — — — — -28 -16 — 41.9% -0.85 3–5 (38%) 3–1 (75%) 100.2 -2.19 1971 1799 143.5 — — — — -114 +2 0 46.0% -0.35 5–8 (38%) 3–2 (60%) 99.7 -6.44
23 1977 1673 128.2 — — — — -20 +15 +56 46.5% -0.30 4–7 (36%) 3–2 (60%) 96.1 +0.29 1972 1821 139.7 — — — — -47 -20 -41 48.2% +0.09 9–3 (75%) 4–4 (50%) 105.3 -5.04
24 1978 1556 112.0 — — — — +32 +67 +101 37.9% -0.67 0–6 (0%) 3–2 (60%) 92.8 +1.50 1973 1761 143.5 — — — — -2 +54 +48 54.3% +0.18 7–9 (44%) 4–5 (44%) 95.0 -5.52
25 1979 1601 112.8 — — — — +33 — +38 37.5% -1.37 3–1 (75%) 3–1 (75%) 103.8 -0.19 1974 1789 134.2 — — — — +8 — — 46.6% -0.29 3–3 (50%) 0–3 (0%) 97.0 -2.42
26 1980 1461 99.9 — — — — +28 +53 — 23.6% -1.89 2–5 (29%) 0–2 — +1.35 1975 1830 135.8 — — — — +53 -29 — 49.3% -0.35 6–5 (55%) 2–2 (50%) 99.8 -1.06
27 1981 1554 119.2 — — — — +46 -54 +102 36.6% -1.61 2–1 (67%) 1–0 — +0.48 1976 1747 126.7 — — — — +33 -52 +32 41.1% -0.78 3–6 (33%) 3–2 (60%) 97.4 -2.67
28 1982 1475 93.2 — — — — +5 -45 — 12.0% -2.60 0–3 (0%) 0–1 — -0.67 1977 1679 124.6 — — — — +10 -23 — 16.7% -2.17 1–1 1–3 (25%) — -1.96
29 — — — — — — — — — — — — — — — — 1978 1652 127.4 — — — — -20 +24 — 36.6% -1.17 2–5 (29%) 5–1 (83%) 99.1 -1.13
30 — — — — — — — — — — — — — — — — 1979 1664 111.0 — — — — — — — 40.0% -0.20 1–0 0–1 — -0.14
32 1986 1473 102.0 — — — — — — — 33.3% -0.67 0–1 — — -0.16 — — — — — — — — — — — — — — — —
Career — 1829 130.6 — — — — -5 -36 +16 44.1% -0.47 38–48 (44%) 26–25 (51%) 98.1 +0.04 — 1954 139.0 — — — — -28 -1 +15 49.4% -0.01 63–51 (55%) 22–24 (48%) 101.7 -6.89

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.