H2H data updated: 2026-10-28 00:00 UTC

Yvonne Vermaak vs Stacy Margolin H2H: 0-1

Stacy Margolin holds a 1–0 lead over Yvonne Vermaak in their WTA head-to-head. Across 1 main-draw meeting, Stacy Margolin leads 1–0 on hard courts. Most recently, Stacy Margolin won the 1978 San Antonio final 7-5 6-1.

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

Yvonne Vermaak
RSA Age 69 Right-Handed 155 cm / 5'1"
H2H
0 – 1
1 main-draw meetings
Stacy Margolin
USA Age 67

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Stacy Margolin 7-5 6-1 Yvonne Vermaak Match data Sep 17, 1978* F San Antonio 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
Yvonne Vermaak — #38 10 1,892 239 250 48.9% 0 0 0 0 5 5
Stacy Margolin — — — 1,856 74 100 42.5% 0 0 0 0 4 4

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 Yvonne Vermaak Stacy Margolin
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 1976 2–1 66.7% — 1,523 0 1
18 1975 15–12 55.6% — 1,599 0 0 1977 1–5 16.7% — 1,504 0 2
19 1976 8–10 44.4% — 1,606 0 1 1978 17–6 73.9% — 1,786 0 4
20 1977 20–14 58.8% — 1,765 0 2 1979 12–20 37.5% — 1,755 0 4
21 1978 29–23 55.8% — 1,794 0 2 1980 25–26 49.0% — 1,776 0 4
22 1979 15–23 39.5% — 1,781 0 2 1981 11–20 35.5% — 1,697 0 4
23 1980 19–19 50.0% — 1,735 0 2 1982 4–14 22.2% — 1,542 0 4
24 1981 19–28 40.4% — 1,720 0 2 1983 2–5 28.6% — 1,519 0 4
25 1982 36–27 57.1% — 1,821 0 2 1984 0–1 0.0% — 1,513 0 4
26 1983 33–26 55.9% — 1,755 0 4 1985 0–2 0.0% — 1,480 0 4
27 1984 29–28 50.9% #41 1,801 0 5 — — — — — — —
28 1985 8–21 27.6% — 1,605 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 1,542 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 Yvonne Vermaak Stacy Margolin
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% — — — — — — — — — — — — 1976 1 0 1 100.0% — — — — — — — — 1 1 2 50.0%
18 1975 4 3 7 57.1% 7 4 11 63.6% 3 4 7 42.9% — — — — 1977 0 2 2 0.0% 0 1 1 0.0% — — — — 1 2 3 33.3%
19 1976 1 1 2 50.0% 7 6 13 53.8% 0 2 2 0.0% 0 1 1 0.0% 1978 10 4 14 71.4% — — — — 1 1 2 50.0% — — — —
20 1977 3 2 5 60.0% 6 7 13 46.2% 8 2 10 80.0% 3 3 6 50.0% 1979 1 7 8 12.5% 1 2 3 33.3% 1 2 3 33.3% 9 9 18 50.0%
21 1978 13 7 20 65.0% 2 2 4 50.0% 8 4 12 66.7% 6 10 16 37.5% 1980 14 7 21 66.7% 0 2 2 0.0% 2 3 5 40.0% 9 14 23 39.1%
22 1979 4 6 10 40.0% 4 4 8 50.0% 5 4 9 55.6% 2 9 11 18.2% 1981 6 6 12 50.0% 1 3 4 25.0% 0 2 2 0.0% 4 9 13 30.8%
23 1980 2 5 7 28.6% 9 5 14 64.3% 4 4 8 50.0% 4 5 9 44.4% 1982 0 5 5 0.0% 2 5 7 28.6% 1 3 4 25.0% 1 1 2 50.0%
24 1981 7 9 16 43.8% 11 9 20 55.0% 0 1 1 0.0% 1 9 10 10.0% 1983 1 2 3 33.3% — — — — 1 2 3 33.3% — — — —
25 1982 4 4 8 50.0% 13 7 20 65.0% 9 6 15 60.0% 10 10 20 50.0% 1984 0 1 1 0.0% — — — — — — — — — — — —
26 1983 14 4 18 77.8% 7 8 15 46.7% 8 5 13 61.5% 4 9 13 30.8% 1985 0 1 1 0.0% — — — — — — — — — — — —
27 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 — 72 64 136 52.9% 78 72 150 52.0% 55 44 99 55.6% 33 69 102 32.4% — 33 35 68 48.5% 4 13 17 23.5% 6 13 19 31.6% 25 36 61 41.0%

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 Yvonne Vermaak Stacy Margolin
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 — — — — +43 — — 42.9% -0.71 0–1 — — +0.69 1976 1524 94.1 — — — — +93 — — 50.0% -1.00 — — — +0.95
18 1975 1599 120.1 — — — — +53 -2 -47 57.1% +0.46 3–6 (33%) 3–0 (100%) 100.2 +2.23 1977 1505 107.2 — — — — +54 — — 33.3% -1.00 0–2 0–3 (0%) — +0.64
19 1976 1607 119.9 — — — — -10 +39 — 48.8% +0.09 2–5 (29%) 1–3 (25%) — +0.77 1978 1787 142.9 — — — — -14 — — 66.0% +1.36 5–2 (71%) 0–2 — +0.05
20 1977 1766 138.3 — — — — -80 -80 -75 58.1% +0.41 3–3 (50%) 6–5 (55%) 102.5 -0.04 1979 1756 143.2 — — — — -5 -225 -186 42.5% -0.05 2–7 (22%) 1–4 (20%) 92.7 -0.76
21 1978 1794 135.9 — — — — +3 -135 -32 52.6% +0.33 8–6 (57%) 2–6 (25%) 99.2 +2.36 1980 1777 143.0 — — — — -10 — -191 48.6% -0.01 4–5 (44%) 6–6 (50%) 101.4 -1.80
22 1979 1781 155.4 — — — — -43 -75 +23 40.5% -0.50 4–4 (50%) 1–2 (33%) 99.0 -4.15 1981 1697 121.8 — — — — +33 -202 — 40.3% -1.19 3–7 (30%) 3–1 (75%) 97.8 +0.04
23 1980 1735 137.1 — — — — -93 +40 +57 51.2% +0.13 2–4 (33%) 4–3 (57%) 99.6 -4.28 1982 1543 96.7 — — — — +50 -86 +25 27.9% -1.70 3–4 (43%) 1–2 (33%) 99.4 +0.62
24 1981 1720 144.0 — — — — -67 +97 — 43.1% -0.39 4–6 (40%) 1–5 (17%) 97.0 -2.56 1983 1519 103.4 — — — — +71 — +33 37.5% -0.81 0–2 0–1 — +0.45
25 1982 1821 143.1 — — — — -78 +69 -9 55.2% +0.06 11–10 (52%) 9–10 (47%) 99.9 -2.99 1984 1513 99.5 — — — — — — — 33.3% -2.67 0–1 — — -0.15
26 1983 1755 138.2 — — — — +8 +105 +98 55.4% +0.20 10–11 (48%) 7–3 (70%) 100.1 +1.01 1985 1481 92.3 — — — — — — — 0.0% -3.25 — — — +0.25
27 1984 1801 135.0 — — — — -65 -14 +95 53.1% +0.15 5–11 (31%) 7–8 (47%) 94.0 -0.27 — — — — — — — — — — — — — — — —
28 1985 1605 125.4 — — — — +12 +115 +210 37.7% -0.97 1–10 (9%) 0–1 — -0.88 — — — — — — — — — — — — — — — —
29 1986 1566 105.2 — — — — +20 +85 +195 36.8% -0.87 2–2 (50%) 0–1 — -0.31 — — — — — — — — — — — — — — — —
30 1987 1559 108.1 — — — — — — — 25.0% -2.38 — — — -0.55 — — — — — — — — — — — — — — — —
31 1988 1542 94.0 — — — — — — — 0.0% -4.00 — — — +0.11 — — — — — — — — — — — — — — — —
Career — 1893 142.0 — — — — -34 +34 +34 50.0% -0.06 55–80 (41%) 41–47 (47%) 93.2 -1.90 — 1856 135.2 — — — — +9 -149 -88 44.5% -0.36 17–30 (36%) 11–19 (37%) 92.9 +0.17

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.