H2H data updated: 2026-09-12 00:00 UTC

Yvonne Vermaak vs Barbara Gerken H2H: 0-1

Barbara Gerken holds a 1–0 lead over Yvonne Vermaak in their WTA head-to-head. Across 1 main-draw meeting, Barbara Gerken leads 1–0 on carpet. Most recently, Barbara Gerken won the 1983 Hartford round of 32 6-7 6-1 6-3.

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
Barbara Gerken
USA Age 62

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Barbara Gerken 6-7 6-1 6-3 Yvonne Vermaak Match data Sep 29, 1983* R32 Hartford WTA 250 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
Yvonne Vermaak #558 #38 10 1,892 239 249 49.0% 0 0 0 0 5 5
Barbara Gerken — — — 1,650 64 97 39.8% 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 Yvonne Vermaak Barbara Gerken
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 1973 0–2 0.0% — 1,495 0 0 1981 8–2 80.0% — 1,631 0 0
17 1974 1–2 33.3% — 1,489 0 0 1982 1–5 16.7% — 1,578 0 0
18 1975 15–12 55.6% — 1,599 0 0 1983 5–4 55.6% — 1,617 0 0
19 1976 8–10 44.4% — 1,606 0 1 1984 9–16 36.0% — 1,581 0 0
20 1977 20–14 58.8% — 1,765 0 2 1985 11–22 33.3% — 1,576 0 0
21 1978 29–23 55.8% — 1,791 0 2 1986 12–18 40.0% — 1,564 0 0
22 1979 15–23 39.5% — 1,779 0 2 1987 16–19 45.7% — 1,635 0 0
23 1980 19–18 51.4% — 1,741 0 2 1988 2–10 16.7% — 1,527 0 0
24 1981 19–28 40.4% — 1,719 0 2 1989 0–1 0.0% — 1,507 0 0
25 1982 36–27 57.1% — 1,820 0 2 — — — — — — —
26 1983 33–26 55.9% — 1,754 0 4 — — — — — — —
27 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 Yvonne Vermaak Barbara Gerken
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% — — — — — — — — — — — — 1981 4 1 5 80.0% — — — — — — — — — — — —
17 1974 1 2 3 33.3% — — — — — — — — — — — — 1982 1 3 4 25.0% 0 1 1 0.0% 0 1 1 0.0% — — — —
18 1975 4 3 7 57.1% 7 4 11 63.6% 3 4 7 42.9% — — — — 1983 3 2 5 60.0% 1 1 2 50.0% — — — — 1 1 2 50.0%
19 1976 1 1 2 50.0% 7 6 13 53.8% 0 2 2 0.0% 0 1 1 0.0% 1984 3 6 9 33.3% 4 6 10 40.0% 2 4 6 33.3% — — — —
20 1977 3 2 5 60.0% 6 7 13 46.2% 8 2 10 80.0% 3 3 6 50.0% 1985 3 10 13 23.1% 0 1 1 0.0% 3 6 9 33.3% 5 5 10 50.0%
21 1978 13 7 20 65.0% 2 2 4 50.0% 8 4 12 66.7% 6 10 16 37.5% 1986 5 8 13 38.5% 0 4 4 0.0% 2 2 4 50.0% 5 4 9 55.6%
22 1979 4 6 10 40.0% 4 4 8 50.0% 5 4 9 55.6% 2 9 11 18.2% 1987 13 11 24 54.2% — — — — 0 4 4 0.0% 3 4 7 42.9%
23 1980 2 5 7 28.6% 9 5 14 64.3% 4 4 8 50.0% 4 4 8 50.0% 1988 1 6 7 14.3% — — — — 0 3 3 0.0% 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% 1989 0 1 1 0.0% — — — — — — — — — — — —
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 — 72 64 136 52.9% 78 72 150 52.0% 55 44 99 55.6% 33 68 101 32.7% — 33 48 81 40.7% 5 13 18 27.8% 7 20 27 25.9% 15 15 30 50.0%

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 Barbara Gerken
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 1981 1632 123.6 — — — — +57 — — 73.7% +1.32 1–0 2–0 — +0.08
17 1974 1489 99.2 — — — — +44 — — 42.9% -0.71 0–1 — — +0.69 1982 1578 105.6 — — — — +37 — — 33.3% -1.67 0–3 (0%) — — +0.21
18 1975 1599 120.1 — — — — +53 -2 -47 57.1% +0.46 3–6 (33%) 3–0 (100%) 100.2 +2.43 1983 1618 117.4 — — — — +40 — — 52.2% +0.91 3–2 (60%) 0–2 — +1.04
19 1976 1607 119.9 — — — — -10 +40 — 48.8% +0.09 2–5 (29%) 1–3 (25%) — +0.96 1984 1581 114.0 — — — — +14 +6 -7 41.2% -0.51 0–3 (0%) 1–6 (14%) 91.5 +0.85
20 1977 1765 138.0 — — — — -79 -79 -75 58.1% +0.41 3–3 (50%) 6–5 (55%) 102.4 +0.27 1985 1577 122.8 — — — — +20 — -44 38.9% -0.56 2–6 (25%) 4–6 (40%) 96.8 +0.89
21 1978 1791 135.3 — — — — +3 -132 -30 52.6% +0.33 8–6 (57%) 2–6 (25%) 99.2 +2.99 1986 1564 106.0 — — — — +19 -88 -13 42.9% -0.56 4–6 (40%) 3–4 (43%) 98.1 +4.32
22 1979 1780 155.2 — — — — -44 -74 +25 40.5% -0.50 4–4 (50%) 1–2 (33%) 99.0 -4.03 1987 1635 119.2 — — — — +37 — -173 48.8% -0.23 5–7 (42%) 2–3 (40%) 98.1 +2.60
23 1980 1742 138.8 — — — — -89 +32 +50 52.5% +0.26 2–4 (33%) 4–3 (57%) 99.5 -4.96 1988 1528 96.1 — — — — +42 — -126 25.9% -1.96 0–3 (0%) 0–2 — +0.93
24 1981 1720 143.5 — — — — -64 +96 — 43.1% -0.39 4–6 (40%) 1–5 (17%) 96.9 -2.78 1989 1508 96.1 — — — — — — — 0.0% -2.50 — — — +0.30
25 1982 1820 142.9 — — — — -77 +69 -9 55.2% +0.06 11–10 (52%) 9–10 (47%) 99.8 -3.53 — — — — — — — — — — — — — — — —
26 1983 1755 138.0 — — — — +7 +104 +97 55.4% +0.20 10–11 (48%) 7–3 (70%) 100.0 +1.14 — — — — — — — — — — — — — — — —
27 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 — 1892 141.9 — — — — -33 +33 +34 50.0% -0.05 55–80 (41%) 41–47 (47%) 93.1 -1.91 — 1650 118.4 — — — — +29 -21 -60 43.5% -0.45 15–30 (33%) 12–23 (34%) 88.2 +6.97

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.