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

Yvonne Vermaak vs Kay Mcdaniel H2H: 1-0

Yvonne Vermaak holds a 1–0 lead over Kay Mcdaniel in their WTA head-to-head. Across 1 main-draw meeting, Yvonne Vermaak leads 1–0 on hard courts. Most recently, Yvonne Vermaak won the 1978 Montreal round of 16 6-4 7-6.

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
1 – 0
1 main-draw meetings
Kay Mcdaniel
USA

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Yvonne Vermaak 6-4 7-6 Kay Mcdaniel Match data Sep 22, 1978* R16 Montreal 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 #558 #38 10 1,892 239 249 49.0% 0 0 0 0 5 5
Kay Mcdaniel — — — 1,653 18 40 31.0% 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 Kay Mcdaniel
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 1973 0–2 0.0% — 1,495 0 0 1974 2–1 66.7% — 1,515 0 0
17 1974 1–2 33.3% — 1,489 0 0 — — — — — — —
18 1975 15–12 55.6% — 1,599 0 0 1976 0–1 0.0% — 1,498 0 0
19 1976 8–10 44.4% — 1,606 0 1 1977 0–1 0.0% — 1,485 0 0
20 1977 20–14 58.8% — 1,765 0 2 1978 2–2 50.0% — 1,520 0 0
21 1978 29–23 55.8% — 1,791 0 2 1979 10–12 45.5% — 1,625 0 0
22 1979 15–23 39.5% — 1,779 0 2 1980 2–12 14.3% — 1,554 0 0
23 1980 19–18 51.4% — 1,741 0 2 1981 0–2 0.0% — 1,528 0 0
24 1981 19–28 40.4% — 1,719 0 2 1982 1–3 25.0% — 1,501 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 1985 1–2 33.3% — 1,484 0 0
28 1985 8–21 27.6% #41 1,604 0 5 1986 0–3 0.0% — 1,453 0 0
29 1986 6–11 35.3% #104 1,565 0 5 1987 0–1 0.0% — 1,447 0 0
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 Kay Mcdaniel
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% — — — — — — — — — — — — 1974 — — — — 2 1 3 66.7% — — — — — — — —
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 1976 1 1 2 50.0% 7 6 13 53.8% 0 2 2 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
20 1977 3 2 5 60.0% 6 7 13 46.2% 8 2 10 80.0% 3 3 6 50.0% 1978 2 2 4 50.0% — — — — — — — — — — — —
21 1978 13 7 20 65.0% 2 2 4 50.0% 8 4 12 66.7% 6 10 16 37.5% 1979 2 2 4 50.0% 0 2 2 0.0% 5 3 8 62.5% 2 4 6 33.3%
22 1979 4 6 10 40.0% 4 4 8 50.0% 5 4 9 55.6% 2 9 11 18.2% 1980 2 4 6 33.3% 0 1 1 0.0% 0 3 3 0.0% 0 4 4 0.0%
23 1980 2 5 7 28.6% 9 5 14 64.3% 4 4 8 50.0% 4 4 8 50.0% 1981 — — — — 0 1 1 0.0% — — — — — — — —
24 1981 7 9 16 43.8% 11 9 20 55.0% 0 1 1 0.0% 1 9 10 10.0% 1982 1 3 4 25.0% — — — — — — — — — — — —
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% 1986 0 2 2 0.0% — — — — 0 1 1 0.0% — — — —
29 1986 1 2 3 33.3% 4 6 10 40.0% 1 3 4 25.0% — — — — 1987 — — — — — — — — — — — — 0 1 1 0.0%
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% — 7 13 20 35.0% 2 5 7 28.6% 5 7 12 41.7% 2 9 11 18.2%

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 Kay Mcdaniel
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 1974 1516 99.4 — — — — — +25 — 57.1% -0.28 1–0 — — +0.38
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 1976 1498 99.0 — — — — — — — 33.3% -0.67 0–1 0–1 — 0.00
19 1976 1607 119.9 — — — — -10 +40 — 48.8% +0.09 2–5 (29%) 1–3 (25%) — +0.96 1977 1486 99.4 — — — — — — — 0.0% -3.00 — — — -0.04
20 1977 1765 138.0 — — — — -79 -79 -75 58.1% +0.41 3–3 (50%) 6–5 (55%) 102.4 +0.27 1978 1520 109.0 — — — — +104 — — 55.6% +0.78 0–1 0–1 — +0.20
21 1978 1791 135.3 — — — — +3 -132 -30 52.6% +0.33 8–6 (57%) 2–6 (25%) 99.2 +2.99 1979 1625 126.4 — — — — +23 — +26 43.4% -0.57 6–3 (67%) 4–1 (80%) 109.0 +0.41
22 1979 1780 155.2 — — — — -44 -74 +25 40.5% -0.50 4–4 (50%) 1–2 (33%) 99.0 -4.03 1980 1555 99.2 — — — — -19 — +36 21.9% -2.47 1–3 (25%) 2–0 — -0.34
23 1980 1742 138.8 — — — — -89 +32 +50 52.5% +0.26 2–4 (33%) 4–3 (57%) 99.5 -4.96 1981 1528 94.7 — — — — — — — 0.0% -4.25 — — — -0.09
24 1981 1720 143.5 — — — — -64 +96 — 43.1% -0.39 4–6 (40%) 1–5 (17%) 96.9 -2.78 1982 1501 104.3 — — — — +21 — — 40.0% -0.30 0–2 1–1 — +0.49
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 1985 1485 96.2 — — — — — — — 33.3% -1.33 — 1–0 — +0.03
28 1985 1605 125.4 — — — — +10 +114 +210 37.7% -0.97 1–10 (9%) 0–1 — -0.99 1986 1454 95.8 — — — — — — — 14.3% -2.14 0–1 — — +0.25
29 1986 1565 105.1 — — — — +19 +86 +196 36.8% -0.87 2–2 (50%) 0–1 — 0.00 1987 1447 99.8 — — — — — — — 0.0% -3.50 — — — +0.02
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 — 1653 110.7 — — — — +19 +25 +29 34.8% -1.20 8–11 (42%) 8–4 (67%) 103.3 +2.26

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.