H2H data updated: 2026-09-13 00:00 UTC

Yvonne Vermaak vs Masako Yanagi H2H: 1-0

Yvonne Vermaak holds a 1–0 lead over Masako Yanagi 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 1986 Boca Raton round of 128 6-3 6-3.

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Yvonne Vermaak
RSA Age 69 Right-Handed 155 cm / 5'1"
H2H
1 – 0
1 main-draw meetings
Masako Yanagi
JPN Age 66 Left-Handed 191 cm / 6'3"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Yvonne Vermaak 6-3 6-3 Masako Yanagi #122 Match data Feb 11, 1986* R128 Boca Raton 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
Masako Yanagi #496 #89 9 1,622 46 73 38.7% 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 Masako Yanagi
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 — — — — — — —
18 1975 15–12 55.6% — 1,599 0 0 — — — — — — —
19 1976 8–10 44.4% — 1,606 0 1 — — — — — — —
20 1977 20–14 58.8% — 1,765 0 2 1980 2–3 40.0% — 1,507 0 0
21 1978 29–23 55.8% — 1,791 0 2 1981 0–1 0.0% — 1,496 0 0
22 1979 15–23 39.5% — 1,779 0 2 1982 12–7 63.2% — 1,561 0 0
23 1980 19–18 51.4% — 1,741 0 2 1983 5–3 62.5% — 1,603 0 0
24 1981 19–28 40.4% — 1,719 0 2 1984 4–6 40.0% #103 1,573 0 0
25 1982 36–27 57.1% — 1,820 0 2 1985 4–12 25.0% #104 1,522 0 0
26 1983 33–26 55.9% — 1,754 0 4 1986 6–13 31.6% #113 1,514 0 0
27 1984 29–28 50.9% #41 1,800 0 5 1987 0–4 0.0% #242 1,479 0 0
28 1985 8–21 27.6% #41 1,604 0 5 1988 9–12 42.9% #102 1,524 0 0
29 1986 6–11 35.3% #104 1,565 0 5 1989 2–8 20.0% #209 1,482 0 0
30 1987 1–3 25.0% #201 1,558 0 5 — — — — — — —
31 1988 0–1 0.0% #287 1,541 0 5 1991 0–1 0.0% #479 1,477 0 0
33 — — — — — — — 1993 2–3 40.0% #190 1,481 0 0

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 Masako Yanagi
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% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
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% 1980 0 1 1 0.0% 0 1 1 0.0% — — — — — — — —
21 1978 13 7 20 65.0% 2 2 4 50.0% 8 4 12 66.7% 6 10 16 37.5% 1981 0 1 1 0.0% — — — — — — — — — — — —
22 1979 4 6 10 40.0% 4 4 8 50.0% 5 4 9 55.6% 2 9 11 18.2% 1982 2 2 4 50.0% 5 2 7 71.4% 1 1 2 50.0% — — — —
23 1980 2 5 7 28.6% 9 5 14 64.3% 4 4 8 50.0% 4 4 8 50.0% 1983 2 1 3 66.7% — — — — 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% 1984 3 3 6 50.0% 1 2 3 33.3% 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% 1985 2 6 8 25.0% 1 2 3 33.3% 1 4 5 20.0% — — — —
26 1983 14 4 18 77.8% 7 8 15 46.7% 8 5 13 61.5% 4 9 13 30.8% 1986 4 8 12 33.3% 1 1 2 50.0% 0 1 1 0.0% 1 3 4 25.0%
27 1984 12 7 19 63.2% 7 8 15 46.7% 8 6 14 57.1% 2 7 9 22.2% 1987 0 2 2 0.0% — — — — 0 2 2 0.0% — — — —
28 1985 5 8 13 38.5% 1 4 5 20.0% 1 3 4 25.0% 1 6 7 14.3% 1988 3 7 10 30.0% 2 1 3 66.7% 4 4 8 50.0% — — — —
29 1986 1 2 3 33.3% 4 6 10 40.0% 1 3 4 25.0% — — — — 1989 2 5 7 28.6% — — — — 0 2 2 0.0% 0 1 1 0.0%
30 1987 1 1 2 50.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
31 1988 0 1 1 0.0% — — — — — — — — — — — — 1991 0 1 1 0.0% — — — — — — — — — — — —
33 — — — — — — — — — — — — — — — — — 1993 1 2 3 33.3% — — — — — — — — 1 1 2 50.0%
Career — 72 64 136 52.9% 78 72 150 52.0% 55 44 99 55.6% 33 68 101 32.7% — 19 39 58 32.8% 10 9 19 52.6% 7 16 23 30.4% 2 5 7 28.6%

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 Masako Yanagi
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 — — — — +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 — — — — — — — — — — — — — — — —
19 1976 1607 119.9 — — — — -10 +40 — 48.8% +0.09 2–5 (29%) 1–3 (25%) — +0.96 — — — — — — — — — — — — — — — —
20 1977 1765 138.0 — — — — -79 -79 -75 58.1% +0.41 3–3 (50%) 6–5 (55%) 102.4 +0.27 1980 1508 101.4 — — — — — — — 36.4% -1.09 1–0 — — -0.30
21 1978 1791 135.3 — — — — +3 -132 -30 52.6% +0.33 8–6 (57%) 2–6 (25%) 99.2 +2.99 1981 1497 99.3 — — — — — — — 33.3% -1.67 0–1 — — +0.09
22 1979 1780 155.2 — — — — -44 -74 +25 40.5% -0.50 4–4 (50%) 1–2 (33%) 99.0 -4.03 1982 1562 107.6 — — — — -15 +19 — 61.5% +0.72 1–0 0–1 — +2.51
23 1980 1742 138.8 — — — — -89 +32 +50 52.5% +0.26 2–4 (33%) 4–3 (57%) 99.5 -4.96 1983 1604 105.2 — — — — -17 — — 50.0% -0.40 4–0 (100%) 3–2 (60%) 106.1 +0.50
24 1981 1720 143.5 — — — — -64 +96 — 43.1% -0.39 4–6 (40%) 1–5 (17%) 96.9 -2.78 1984 1573 108.0 — — — — +5 +41 — 44.0% -0.56 2–3 (40%) 0–1 — +1.16
25 1982 1820 142.9 — — — — -77 +69 -9 55.2% +0.06 11–10 (52%) 9–10 (47%) 99.8 -3.53 1985 1523 110.1 — — — — +25 +64 -5 32.4% -1.05 1–4 (20%) 0–3 (0%) 93.6 +0.76
26 1983 1755 138.0 — — — — +7 +104 +97 55.4% +0.20 10–11 (48%) 7–3 (70%) 100.0 +1.14 1986 1515 107.6 — — — — +6 — — 36.2% -0.77 4–5 (44%) 3–4 (43%) 98.8 +1.81
27 1984 1801 134.8 — — — — -65 -14 +95 53.1% +0.15 5–11 (31%) 7–8 (47%) 94.0 -0.64 1987 1480 91.7 — — — — — — — 11.1% -3.33 0–1 — — -0.10
28 1985 1605 125.4 — — — — +10 +114 +210 37.7% -0.97 1–10 (9%) 0–1 — -0.99 1988 1525 114.3 — — — — -63 +99 -30 44.9% -0.27 3–4 (43%) 1–2 (33%) 99.6 +1.43
29 1986 1565 105.1 — — — — +19 +86 +196 36.8% -0.87 2–2 (50%) 0–1 — 0.00 1989 1483 89.4 — — — — -34 — — 15.0% -2.70 1–1 1–0 — +0.58
30 1987 1558 108.1 — — — — — — — 25.0% -2.38 — — — -0.56 — — — — — — — — — — — — — — — —
31 1988 1542 94.0 — — — — — — — 0.0% -4.00 — — — +0.11 1991 1478 102.4 — — — — — — — 0.0% -3.50 — — — -0.14
33 — — — — — — — — — — — — — — — — 1993 1482 100.7 — — — — -27 — — 41.7% -1.42 1–1 1–0 — +0.30
Career — 1892 141.9 — — — — -33 +33 +34 50.0% -0.05 55–80 (41%) 41–47 (47%) 93.1 -1.91 — 1623 108.2 — — — — -14 +47 -20 40.1% -0.76 18–20 (47%) 9–13 (41%) 97.2 +7.23

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.