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

Diane Desfor vs Yvonne Vermaak H2H: 1-2

Yvonne Vermaak holds a 2–1 lead over Diane Desfor in their WTA head-to-head. Across 3 main-draw meetings, they are tied 1–1 on hard courts, while Yvonne Vermaak leads 1–0 on grass. Most recently, Diane Desfor won the 1980 San Diego round of 16 6-4 6-1.

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Diane Desfor
USA Age 71 Right-Handed 165 cm / 5'5"
H2H
1 – 2
3 main-draw meetings
Yvonne Vermaak
RSA Age 69 Right-Handed 155 cm / 5'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Diane Desfor 6-4 6-1 Yvonne Vermaak Match data Aug 1, 1980* R16 San Diego WTA 500 Hard
Yvonne Vermaak 6-7 6-2 6-4 Diane Desfor Match data Sep 23, 1978* QF Montreal WTA 250 Hard
Yvonne Vermaak 4-6 6-4 6-3 Diane Desfor Match data Jun 21, 1978* R64 Eastbourne Open 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
Diane Desfor — — — 1,775 69 89 43.7% 0 0 0 0 2 2
Yvonne Vermaak #558 #38 10 1,892 239 249 49.0% 0 0 0 0 5 5

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 Diane Desfor Yvonne Vermaak
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1973 0–2 0.0% — 1,495 0 0
17 — — — — — — — 1974 1–2 33.3% — 1,489 0 0
18 — — — — — — — 1975 15–12 55.6% — 1,599 0 0
19 1974 1–2 33.3% — 1,482 0 0 1976 8–10 44.4% — 1,606 0 1
20 1975 5–3 62.5% — 1,524 0 0 1977 20–14 58.8% — 1,765 0 2
21 1976 4–1 80.0% — 1,580 0 1 1978 29–23 55.8% — 1,791 0 2
22 1977 1–1 50.0% — 1,567 0 1 1979 15–23 39.5% — 1,779 0 2
23 1978 14–17 45.2% — 1,641 0 1 1980 19–18 51.4% — 1,741 0 2
24 1979 15–22 40.5% — 1,688 0 1 1981 19–28 40.4% — 1,719 0 2
25 1980 18–21 46.2% — 1,648 0 1 1982 36–27 57.1% — 1,820 0 2
26 1981 8–17 32.0% — 1,613 0 1 1983 33–26 55.9% — 1,754 0 4
27 1982 3–5 37.5% — 1,586 0 2 1984 29–28 50.9% #41 1,800 0 5
28 — — — — — — — 1985 8–21 27.6% #41 1,604 0 5
29 — — — — — — — 1986 6–11 35.3% #104 1,565 0 5
30 — — — — — — — 1987 1–3 25.0% #201 1,558 0 5
31 — — — — — — — 1988 0–1 0.0% #287 1,541 0 5

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 Diane Desfor Yvonne Vermaak
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 — — — — — — — — — — — — — — — — — 1973 0 2 2 0.0% — — — — — — — — — — — —
17 — — — — — — — — — — — — — — — — — 1974 1 2 3 33.3% — — — — — — — — — — — —
18 — — — — — — — — — — — — — — — — — 1975 4 3 7 57.1% 7 4 11 63.6% 3 4 7 42.9% — — — —
19 1974 — — — — 1 1 2 50.0% 0 1 1 0.0% — — — — 1976 1 1 2 50.0% 7 6 13 53.8% 0 2 2 0.0% 0 1 1 0.0%
20 1975 — — — — — — — — 2 1 3 66.7% — — — — 1977 3 2 5 60.0% 6 7 13 46.2% 8 2 10 80.0% 3 3 6 50.0%
21 1976 — — — — 0 1 1 0.0% — — — — — — — — 1978 13 7 20 65.0% 2 2 4 50.0% 8 4 12 66.7% 6 10 16 37.5%
22 — — — — — — — — — — — — — — — — — 1979 4 6 10 40.0% 4 4 8 50.0% 5 4 9 55.6% 2 9 11 18.2%
23 1978 7 6 13 53.8% 2 5 7 28.6% 2 4 6 33.3% 3 2 5 60.0% 1980 2 5 7 28.6% 9 5 14 64.3% 4 4 8 50.0% 4 4 8 50.0%
24 1979 5 6 11 45.5% 1 3 4 25.0% 6 7 13 46.2% 3 6 9 33.3% 1981 7 9 16 43.8% 11 9 20 55.0% 0 1 1 0.0% 1 9 10 10.0%
25 1980 4 9 13 30.8% 1 2 3 33.3% 12 7 19 63.2% 1 3 4 25.0% 1982 4 4 8 50.0% 13 7 20 65.0% 9 6 15 60.0% 10 10 20 50.0%
26 1981 1 4 5 20.0% 0 3 3 0.0% 7 7 14 50.0% 0 3 3 0.0% 1983 14 4 18 77.8% 7 8 15 46.7% 8 5 13 61.5% 4 9 13 30.8%
27 1982 2 2 4 50.0% 0 1 1 0.0% 0 2 2 0.0% — — — — 1984 12 7 19 63.2% 7 8 15 46.7% 8 6 14 57.1% 2 7 9 22.2%
28 — — — — — — — — — — — — — — — — — 1985 5 8 13 38.5% 1 4 5 20.0% 1 3 4 25.0% 1 6 7 14.3%
29 — — — — — — — — — — — — — — — — — 1986 1 2 3 33.3% 4 6 10 40.0% 1 3 4 25.0% — — — —
30 — — — — — — — — — — — — — — — — — 1987 1 1 2 50.0% 0 2 2 0.0% — — — — — — — —
31 — — — — — — — — — — — — — — — — — 1988 0 1 1 0.0% — — — — — — — — — — — —
Career — 19 27 46 41.3% 5 16 21 23.8% 29 29 58 50.0% 7 14 21 33.3% — 72 64 136 52.9% 78 72 150 52.0% 55 44 99 55.6% 33 68 101 32.7%

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 Diane Desfor Yvonne Vermaak
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 — — — — — — — — — — — — — — — — 1973 1496 101.8 — — — — — — — 20.0% -3.20 0–1 — — -0.39
17 — — — — — — — — — — — — — — — — 1974 1489 99.2 — — — — +44 — — 42.9% -0.71 0–1 — — +0.69
18 — — — — — — — — — — — — — — — — 1975 1599 120.1 — — — — +53 -2 -47 57.1% +0.46 3–6 (33%) 3–0 (100%) 100.2 +2.43
19 1974 1483 94.1 — — — — — — — 28.6% -1.57 1–0 0–1 — +0.64 1976 1607 119.9 — — — — -10 +40 — 48.8% +0.09 2–5 (29%) 1–3 (25%) — +0.96
20 1975 1525 105.5 — — — — — — +34 55.0% +0.05 3–1 (75%) 2–0 — +0.97 1977 1765 138.0 — — — — -79 -79 -75 58.1% +0.41 3–3 (50%) 6–5 (55%) 102.4 +0.27
21 1976 1580 118.1 — — — — — — — 72.7% +1.91 1–0 1–0 — -0.10 1978 1791 135.3 — — — — +3 -132 -30 52.6% +0.33 8–6 (57%) 2–6 (25%) 99.2 +2.99
22 1977 1568 99.4 — — — — — — — 60.0% +1.00 0–1 — — +0.33 1979 1780 155.2 — — — — -44 -74 +25 40.5% -0.50 4–4 (50%) 1–2 (33%) 99.0 -4.03
23 1978 1641 122.6 — — — — +30 -131 -97 44.6% -0.07 7–7 (50%) 3–6 (33%) 98.7 +0.61 1980 1742 138.8 — — — — -89 +32 +50 52.5% +0.26 2–4 (33%) 4–3 (57%) 99.5 -4.96
24 1979 1689 129.6 — — — — -37 -166 -73 40.2% -0.57 5–5 (50%) 2–6 (25%) 98.8 +0.12 1981 1720 143.5 — — — — -64 +96 — 43.1% -0.39 4–6 (40%) 1–5 (17%) 96.9 -2.78
25 1980 1649 126.4 — — — — -120 -124 +77 46.7% -0.22 6–8 (43%) 5–3 (63%) 101.5 -1.43 1982 1820 142.9 — — — — -77 +69 -9 55.2% +0.06 11–10 (52%) 9–10 (47%) 99.8 -3.53
26 1981 1614 112.5 — — — — -87 -99 +82 33.3% -1.11 2–4 (33%) — — -1.06 1983 1755 138.0 — — — — +7 +104 +97 55.4% +0.20 10–11 (48%) 7–3 (70%) 100.0 +1.14
27 1982 1586 105.7 — — — — -77 — — 42.1% +0.32 1–2 (33%) 0–2 — +0.83 1984 1801 134.8 — — — — -65 -14 +95 53.1% +0.15 5–11 (31%) 7–8 (47%) 94.0 -0.64
28 — — — — — — — — — — — — — — — — 1985 1605 125.4 — — — — +10 +114 +210 37.7% -0.97 1–10 (9%) 0–1 — -0.99
29 — — — — — — — — — — — — — — — — 1986 1565 105.1 — — — — +19 +86 +196 36.8% -0.87 2–2 (50%) 0–1 — 0.00
30 — — — — — — — — — — — — — — — — 1987 1558 108.1 — — — — — — — 25.0% -2.38 — — — -0.56
31 — — — — — — — — — — — — — — — — 1988 1542 94.0 — — — — — — — 0.0% -4.00 — — — +0.11
Career — 1775 125.0 — — — — -48 -132 +21 43.6% -0.30 26–28 (48%) 13–18 (42%) 98.7 +0.59 — 1892 141.9 — — — — -33 +33 +34 50.0% -0.05 55–80 (41%) 41–47 (47%) 93.1 -1.91

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.