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

Bonnie Gadusek vs Yvonne Vermaak H2H: 2-0

Bonnie Gadusek holds a 2–0 lead over Yvonne Vermaak in their WTA head-to-head. Across 2 main-draw meetings, Bonnie Gadusek leads 1–0 on carpet and 1–0 on clay. Most recently, Bonnie Gadusek won the 1985 Orlando round of 16 6-0 6-4.

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Bonnie Gadusek
USA Age 63 Right-Handed 170 cm / 5'7"
H2H
2 – 0
2 main-draw meetings
Yvonne Vermaak
RSA Age 69 Right-Handed 155 cm / 5'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Bonnie Gadusek 6-0 6-4 Yvonne Vermaak Match data Apr 26, 1985* R16 Orlando WTA 500 Clay
Bonnie Gadusek 6-4 5-7 6-0 Yvonne Vermaak #40 Match data Jan 6, 1984* R16 Washington Open WTA 500 Carpet

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
Bonnie Gadusek — #10 — 2,076 189 94 66.8% 0 0 0 0 8 8
Yvonne Vermaak — #38 10 1,892 239 250 48.9% 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 Bonnie Gadusek Yvonne Vermaak
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 1980 24–4 85.7% — 1,733 0 3 1973 0–2 0.0% — 1,495 0 0
17 1981 12–14 46.2% — 1,771 0 3 1974 1–2 33.3% — 1,489 0 0
18 1982 39–24 61.9% — 1,921 0 3 1975 15–12 55.6% — 1,599 0 0
19 1983 24–15 61.5% — 1,933 0 3 1976 8–10 44.4% — 1,606 0 1
20 1984 29–13 69.0% — 1,958 0 4 1977 20–14 58.8% — 1,765 0 2
21 1985 45–12 78.9% #10 2,047 0 8 1978 29–23 55.8% — 1,794 0 2
22 1986 16–9 64.0% — 2,018 0 8 1979 15–23 39.5% — 1,781 0 2
23 1987 0–3 0.0% — 1,935 0 8 1980 19–19 50.0% — 1,735 0 2
24 — — — — — — — 1981 19–28 40.4% — 1,720 0 2
25 — — — — — — — 1982 36–27 57.1% — 1,821 0 2
26 — — — — — — — 1983 33–26 55.9% — 1,755 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 Bonnie Gadusek 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 1980 5 1 6 83.3% — — — — — — — — — — — — 1973 0 2 2 0.0% — — — — — — — — — — — —
17 1981 3 3 6 50.0% 5 6 11 45.5% 3 3 6 50.0% 1 2 3 33.3% 1974 1 2 3 33.3% — — — — — — — — — — — —
18 1982 9 6 15 60.0% 21 8 29 72.4% — — — — 9 10 19 47.4% 1975 4 3 7 57.1% 7 4 11 63.6% 3 4 7 42.9% — — — —
19 1983 9 4 13 69.2% 12 6 18 66.7% — — — — 3 5 8 37.5% 1976 1 1 2 50.0% 7 6 13 53.8% 0 2 2 0.0% 0 1 1 0.0%
20 1984 9 4 13 69.2% 12 4 16 75.0% — — — — 8 5 13 61.5% 1977 3 2 5 60.0% 6 7 13 46.2% 8 2 10 80.0% 3 3 6 50.0%
21 1985 23 6 29 79.3% 10 2 12 83.3% 1 1 2 50.0% 11 3 14 78.6% 1978 13 7 20 65.0% 2 2 4 50.0% 8 4 12 66.7% 6 10 16 37.5%
22 1986 9 4 13 69.2% 2 1 3 66.7% — — — — 5 4 9 55.6% 1979 4 6 10 40.0% 4 4 8 50.0% 5 4 9 55.6% 2 9 11 18.2%
23 1987 0 2 2 0.0% — — — — — — — — 0 1 1 0.0% 1980 2 5 7 28.6% 9 5 14 64.3% 4 4 8 50.0% 4 5 9 44.4%
24 — — — — — — — — — — — — — — — — — 1981 7 9 16 43.8% 11 9 20 55.0% 0 1 1 0.0% 1 9 10 10.0%
25 — — — — — — — — — — — — — — — — — 1982 4 4 8 50.0% 13 7 20 65.0% 9 6 15 60.0% 10 10 20 50.0%
26 — — — — — — — — — — — — — — — — — 1983 14 4 18 77.8% 7 8 15 46.7% 8 5 13 61.5% 4 9 13 30.8%
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 — 67 30 97 69.1% 62 27 89 69.7% 4 4 8 50.0% 37 30 67 55.2% — 72 64 136 52.9% 78 72 150 52.0% 55 44 99 55.6% 33 69 102 32.4%

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 Bonnie Gadusek 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 1980 1734 141.9 — — — — -66 — — 88.9% +3.20 2–2 (50%) 1–1 — +1.71 1973 1496 101.8 — — — — — — — 20.0% -3.20 0–1 — — -0.39
17 1981 1772 135.5 — — — — -52 -197 -119 48.3% -0.18 3–5 (38%) 0–3 (0%) — -2.48 1974 1489 99.2 — — — — +43 — — 42.9% -0.71 0–1 — — +0.69
18 1982 1921 157.2 — — — — -96 -3 — 60.0% +0.84 6–4 (60%) 4–7 (36%) 102.6 -4.47 1975 1599 120.1 — — — — +53 -2 -47 57.1% +0.46 3–6 (33%) 3–0 (100%) 100.2 +2.23
19 1983 1933 154.5 — — — — -36 +22 — 57.5% +0.78 7–2 (78%) 4–2 (67%) 107.8 -1.56 1976 1607 119.9 — — — — -10 +39 — 48.8% +0.09 2–5 (29%) 1–3 (25%) — +0.77
20 1984 1958 154.9 — — — — -39 +72 — 63.7% +0.77 7–2 (78%) 5–0 (100%) 109.4 -2.39 1977 1766 138.3 — — — — -80 -80 -75 58.1% +0.41 3–3 (50%) 6–5 (55%) 102.5 -0.04
21 1985 2048 157.2 — — — — -7 +64 — 76.6% +1.90 5–5 (50%) 8–5 (62%) 98.1 +0.25 1978 1794 135.9 — — — — +3 -135 -32 52.6% +0.33 8–6 (57%) 2–6 (25%) 99.2 +2.36
22 1986 2018 152.6 — — — — -24 +105 — 59.6% +0.67 5–2 (71%) 1–4 (20%) 99.6 -1.95 1979 1781 155.4 — — — — -43 -75 +23 40.5% -0.50 4–4 (50%) 1–2 (33%) 99.0 -4.15
23 1987 1936 93.2 — — — — -35 — — 0.0% -3.83 — — — +0.06 1980 1735 137.1 — — — — -93 +40 +57 51.2% +0.13 2–4 (33%) 4–3 (57%) 99.6 -4.28
24 — — — — — — — — — — — — — — — — 1981 1720 144.0 — — — — -67 +97 — 43.1% -0.39 4–6 (40%) 1–5 (17%) 97.0 -2.56
25 — — — — — — — — — — — — — — — — 1982 1821 143.1 — — — — -78 +69 -9 55.2% +0.06 11–10 (52%) 9–10 (47%) 99.9 -2.99
26 — — — — — — — — — — — — — — — — 1983 1755 138.2 — — — — +8 +105 +98 55.4% +0.20 10–11 (48%) 7–3 (70%) 100.1 +1.01
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 — 2076 158.6 — — — — -42 +4 -119 64.4% +1.08 35–22 (61%) 23–22 (51%) 106.6 -3.87 — 1893 142.0 — — — — -34 +34 +34 50.0% -0.06 55–80 (41%) 41–47 (47%) 93.2 -1.90

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.