H2H data updated: 2026-10-27 00:00 UTC

Chris Oneil vs Yvonne Vermaak H2H: 0-2

Yvonne Vermaak holds a 2–0 lead over Chris Oneil in their WTA head-to-head. Across 2 main-draw meetings, Yvonne Vermaak leads 1–0 on carpet and 1–0 on grass. Most recently, Yvonne Vermaak won the 1980 Detroit round of 64 7-6 6-4.

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Chris Oneil
AUS Age 70 Right-Handed
H2H
0 – 2
2 main-draw meetings
Yvonne Vermaak
RSA Age 69 Right-Handed 155 cm / 5'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Yvonne Vermaak 7-6 6-4 Chris Oneil Match data Feb 20, 1980* R64 Detroit WTA 250 Carpet
Yvonne Vermaak 6-4 6-2 Chris Oneil Match data Jun 11, 1975* R64 Beckenham 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
Chris Oneil — — — 1,766 99 108 47.8% 1 0 0 2 6 9
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 Chris Oneil Yvonne Vermaak
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 1972 6–3 66.7% — 1,547 0 2 1973 0–2 0.0% — 1,495 0 0
17 1973 0–3 0.0% — 1,502 0 2 1974 1–2 33.3% — 1,489 0 0
18 1974 10–12 45.5% — 1,588 0 2 1975 15–12 55.6% — 1,599 0 0
19 1975 30–17 63.8% — 1,661 0 4 1976 8–10 44.4% — 1,606 0 1
20 1976 14–6 70.0% — 1,691 0 7 1977 20–14 58.8% — 1,765 0 2
21 1977 2–5 28.6% — 1,638 0 7 1978 29–23 55.8% — 1,794 0 2
22 1978 13–12 52.0% — 1,715 1 8 1979 15–23 39.5% — 1,781 0 2
23 1979 7–12 36.8% — 1,630 1 8 1980 19–19 50.0% — 1,735 0 2
24 1980 5–8 38.5% — 1,575 1 8 1981 19–28 40.4% — 1,720 0 2
25 1981 4–9 30.8% — 1,552 1 9 1982 36–27 57.1% — 1,821 0 2
26 1982 3–6 33.3% — 1,595 1 9 1983 33–26 55.9% — 1,755 0 4
27 1983 5–15 25.0% — 1,526 1 9 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 Chris Oneil 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 1972 — — — — 3 0 3 100.0% 3 3 6 50.0% — — — — 1973 0 2 2 0.0% — — — — — — — — — — — —
17 1973 — — — — — — — — 0 3 3 0.0% — — — — 1974 1 2 3 33.3% — — — — — — — — — — — —
18 1974 — — — — 4 4 8 50.0% 6 8 14 42.9% — — — — 1975 4 3 7 57.1% 7 4 11 63.6% 3 4 7 42.9% — — — —
19 1975 — — — — 18 5 23 78.3% 10 8 18 55.6% — — — — 1976 1 1 2 50.0% 7 6 13 53.8% 0 2 2 0.0% 0 1 1 0.0%
20 1976 — — — — 3 3 6 50.0% 4 2 6 66.7% — — — — 1977 3 2 5 60.0% 6 7 13 46.2% 8 2 10 80.0% 3 3 6 50.0%
21 1977 — — — — 0 2 2 0.0% 2 3 5 40.0% — — — — 1978 13 7 20 65.0% 2 2 4 50.0% 8 4 12 66.7% 6 10 16 37.5%
22 1978 0 2 2 0.0% 1 3 4 25.0% 10 4 14 71.4% 0 1 1 0.0% 1979 4 6 10 40.0% 4 4 8 50.0% 5 4 9 55.6% 2 9 11 18.2%
23 1979 2 2 4 50.0% 1 4 5 20.0% 2 5 7 28.6% — — — — 1980 2 5 7 28.6% 9 5 14 64.3% 4 4 8 50.0% 4 5 9 44.4%
24 1980 0 1 1 0.0% 2 4 6 33.3% 3 2 5 60.0% 0 1 1 0.0% 1981 7 9 16 43.8% 11 9 20 55.0% 0 1 1 0.0% 1 9 10 10.0%
25 1981 — — — — 0 5 5 0.0% 2 4 6 33.3% — — — — 1982 4 4 8 50.0% 13 7 20 65.0% 9 6 15 60.0% 10 10 20 50.0%
26 1982 — — — — 1 3 4 25.0% 2 2 4 50.0% 0 1 1 0.0% 1983 14 4 18 77.8% 7 8 15 46.7% 8 5 13 61.5% 4 9 13 30.8%
27 1983 2 6 8 25.0% 0 4 4 0.0% 2 4 6 33.3% — — — — 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 — 4 11 15 26.7% 33 37 70 47.1% 46 48 94 48.9% 0 3 3 0.0% — 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 Chris Oneil 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 1972 1548 107.2 — — — — — +39 +1 57.9% +0.53 2–1 (67%) 3–0 (100%) 104.5 +1.29 1973 1496 101.8 — — — — — — — 20.0% -3.20 0–1 — — -0.39
17 1973 1503 96.5 — — — — — — -14 14.3% -2.00 0–1 0–2 — +0.32 1974 1489 99.2 — — — — +43 — — 42.9% -0.71 0–1 — — +0.69
18 1974 1589 130.7 — — — — — +28 -30 49.0% -0.18 2–5 (29%) 1–1 — -0.32 1975 1599 120.1 — — — — +53 -2 -47 57.1% +0.46 3–6 (33%) 3–0 (100%) 100.2 +2.23
19 1975 1661 134.9 — — — — — +126 -23 61.8% +0.86 5–3 (63%) 7–1 (88%) 106.5 +3.05 1976 1607 119.9 — — — — -10 +39 — 48.8% +0.09 2–5 (29%) 1–3 (25%) — +0.77
20 1976 1691 124.2 — — — — — +57 -6 68.2% +1.39 2–2 (50%) 2–1 (67%) 100.3 +2.54 1977 1766 138.3 — — — — -80 -80 -75 58.1% +0.41 3–3 (50%) 6–5 (55%) 102.5 -0.04
21 1977 1638 111.9 — — — — — — +5 35.3% -0.53 1–2 (33%) 1–0 — +0.39 1978 1794 135.9 — — — — +3 -135 -32 52.6% +0.33 8–6 (57%) 2–6 (25%) 99.2 +2.36
22 1978 1716 126.8 — — — — -152 -47 +66 49.1% 0.00 4–3 (57%) 1–1 — +1.19 1979 1781 155.4 — — — — -43 -75 +23 40.5% -0.50 4–4 (50%) 1–2 (33%) 99.0 -4.15
23 1979 1631 118.2 — — — — -42 -32 +82 43.2% -0.55 3–5 (38%) 1–0 — +1.18 1980 1735 137.1 — — — — -93 +40 +57 51.2% +0.13 2–4 (33%) 4–3 (57%) 99.6 -4.28
24 1980 1575 98.9 — — — — — -16 +120 37.9% -0.79 2–1 (67%) 0–3 (0%) 98.2 +0.13 1981 1720 144.0 — — — — -67 +97 — 43.1% -0.39 4–6 (40%) 1–5 (17%) 97.0 -2.56
25 1981 1552 111.3 — — — — — -52 +127 39.3% -1.11 1–3 (25%) 2–1 (67%) — +0.70 1982 1821 143.1 — — — — -78 +69 -9 55.2% +0.06 11–10 (52%) 9–10 (47%) 99.9 -2.99
26 1982 1596 132.5 — — — — — -112 +127 38.1% -0.76 1–2 (33%) 1–2 (33%) 100.0 -1.20 1983 1755 138.2 — — — — +8 +105 +98 55.4% +0.20 10–11 (48%) 7–3 (70%) 100.1 +1.01
27 1983 1527 99.9 — — — — -37 -41 +148 27.3% -1.34 2–2 (50%) 0–5 (0%) 95.9 +0.80 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 — 1766 128.1 — — — — -61 +33 +36 48.6% -0.06 25–30 (45%) 19–17 (53%) 100.1 +4.89 — 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.