H2H data updated: 2026-10-29 00:00 UTC

Naoko Sato vs Yvonne Vermaak H2H: 0-1

Yvonne Vermaak holds a 1–0 lead over Naoko Sato in their WTA head-to-head. Across 1 main-draw meeting, Yvonne Vermaak leads 1–0 on grass. Most recently, Yvonne Vermaak won the 1979 Beckenham round of 16 7-6 5-7 7-5.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Naoko Sato
JPN Age 71
H2H
0 – 1
1 main-draw meetings
Yvonne Vermaak
RSA Age 69 Right-Handed 155 cm / 5'1"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Yvonne Vermaak 7-6 5-7 7-5 Naoko Sato Match data Jun 8, 1979* R16 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
Naoko Sato — — — 1,629 56 91 38.1% 0 0 0 0 0 0
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 Naoko Sato Yvonne Vermaak
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1973 0–2 0.0% — 1,495 0 0
17 1972 2–3 40.0% — 1,504 0 0 1974 1–2 33.3% — 1,489 0 0
18 1973 4–6 40.0% — 1,495 0 0 1975 15–12 55.6% — 1,599 0 0
19 1974 7–16 30.4% — 1,452 0 0 1976 8–10 44.4% — 1,606 0 1
20 1975 5–7 41.7% — 1,492 0 0 1977 20–14 58.8% — 1,765 0 2
21 1976 4–8 33.3% — 1,530 0 0 1978 29–23 55.8% — 1,794 0 2
22 1977 8–12 40.0% — 1,566 0 0 1979 15–23 39.5% — 1,781 0 2
23 1978 6–7 46.2% — 1,595 0 0 1980 19–19 50.0% — 1,735 0 2
24 1979 8–9 47.1% — 1,595 0 0 1981 19–28 40.4% — 1,720 0 2
25 1980 11–10 52.4% — 1,592 0 0 1982 36–27 57.1% — 1,821 0 2
26 1981 1–6 14.3% — 1,531 0 0 1983 33–26 55.9% — 1,755 0 4
27 1982 0–1 0.0% — 1,520 0 0 1984 29–28 50.9% #41 1,801 0 5
28 1983 0–4 0.0% — 1,467 0 0 1985 8–21 27.6% — 1,605 0 5
29 1984 0–1 0.0% — 1,459 0 0 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
32 1987 0–1 0.0% — 1,451 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 Naoko Sato 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 — — — — — — — — — — — — — — — — — 1973 0 2 2 0.0% — — — — — — — — — — — —
17 1972 0 1 1 0.0% 0 1 1 0.0% — — — — 2 1 3 66.7% 1974 1 2 3 33.3% — — — — — — — — — — — —
18 1973 — — — — 2 4 6 33.3% 2 2 4 50.0% — — — — 1975 4 3 7 57.1% 7 4 11 63.6% 3 4 7 42.9% — — — —
19 1974 2 2 4 50.0% 1 6 7 14.3% 2 4 6 33.3% 0 1 1 0.0% 1976 1 1 2 50.0% 7 6 13 53.8% 0 2 2 0.0% 0 1 1 0.0%
20 1975 — — — — 3 2 5 60.0% 0 2 2 0.0% 0 1 1 0.0% 1977 3 2 5 60.0% 6 7 13 46.2% 8 2 10 80.0% 3 3 6 50.0%
21 1976 — — — — 0 4 4 0.0% 4 4 8 50.0% — — — — 1978 13 7 20 65.0% 2 2 4 50.0% 8 4 12 66.7% 6 10 16 37.5%
22 1977 0 1 1 0.0% 1 2 3 33.3% 7 9 16 43.8% — — — — 1979 4 6 10 40.0% 4 4 8 50.0% 5 4 9 55.6% 2 9 11 18.2%
23 1978 — — — — 1 2 3 33.3% 5 4 9 55.6% 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 1979 0 2 2 0.0% — — — — 4 5 9 44.4% — — — — 1981 7 9 16 43.8% 11 9 20 55.0% 0 1 1 0.0% 1 9 10 10.0%
25 1980 1 1 2 50.0% 4 4 8 50.0% 3 4 7 42.9% — — — — 1982 4 4 8 50.0% 13 7 20 65.0% 9 6 15 60.0% 10 10 20 50.0%
26 1981 0 3 3 0.0% 1 2 3 33.3% 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 1982 — — — — — — — — 0 1 1 0.0% — — — — 1984 12 7 19 63.2% 7 8 15 46.7% 8 6 14 57.1% 2 7 9 22.2%
28 1983 0 1 1 0.0% — — — — 0 2 2 0.0% — — — — 1985 5 8 13 38.5% 1 4 5 20.0% 1 3 4 25.0% 1 6 7 14.3%
29 1984 — — — — — — — — 0 1 1 0.0% — — — — 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% — — — — — — — — — — — —
32 1987 — — — — — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
Career — 3 11 14 21.4% 13 27 40 32.5% 27 40 67 40.3% 2 4 6 33.3% — 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 Naoko Sato 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 — — — — — — — — — — — — — — — — 1973 1496 101.8 — — — — — — — 20.0% -3.20 0–1 — — -0.39
17 1972 1505 88.1 — — — — +47 — — 36.4% -2.00 1–0 1–0 — +0.44 1974 1489 99.2 — — — — +43 — — 42.9% -0.71 0–1 — — +0.69
18 1973 1496 92.8 — — — — — -8 +52 40.9% -1.41 1–1 — — +1.09 1975 1599 120.1 — — — — +53 -2 -47 57.1% +0.46 3–6 (33%) 3–0 (100%) 100.2 +2.23
19 1974 1453 91.0 — — — — +95 -59 +77 34.0% -1.11 3–4 (43%) 1–3 (25%) 97.2 +1.25 1976 1607 119.9 — — — — -10 +39 — 48.8% +0.09 2–5 (29%) 1–3 (25%) — +0.77
20 1975 1493 95.6 — — — — — -27 — 40.7% -1.33 2–1 (67%) 1–1 — +0.89 1977 1766 138.3 — — — — -80 -80 -75 58.1% +0.41 3–3 (50%) 6–5 (55%) 102.5 -0.04
21 1976 1530 116.3 — — — — — -83 +49 28.0% -1.64 2–1 (67%) — — -0.39 1978 1794 135.9 — — — — +3 -135 -32 52.6% +0.33 8–6 (57%) 2–6 (25%) 99.2 +2.36
22 1977 1567 121.9 — — — — — -113 +16 43.8% -0.69 3–5 (38%) 3–1 (75%) 101.1 +1.57 1979 1781 155.4 — — — — -43 -75 +23 40.5% -0.50 4–4 (50%) 1–2 (33%) 99.0 -4.15
23 1978 1596 111.7 — — — — — -139 +16 48.3% -0.17 1–2 (33%) 1–1 — +0.40 1980 1735 137.1 — — — — -93 +40 +57 51.2% +0.13 2–4 (33%) 4–3 (57%) 99.6 -4.28
24 1979 1595 114.4 — — — — — — +12 47.4% +0.05 2–2 (50%) 1–1 — +1.57 1981 1720 144.0 — — — — -67 +97 — 43.1% -0.39 4–6 (40%) 1–5 (17%) 97.0 -2.56
25 1980 1593 108.6 — — — — — -117 -11 53.2% +0.30 2–3 (40%) 1–1 — +1.68 1982 1821 143.1 — — — — -78 +69 -9 55.2% +0.06 11–10 (52%) 9–10 (47%) 99.9 -2.99
26 1981 1532 97.3 — — — — -45 -33 — 23.5% -1.88 1–2 (33%) 1–1 — +0.49 1983 1755 138.2 — — — — +8 +105 +98 55.4% +0.20 10–11 (48%) 7–3 (70%) 100.1 +1.01
27 1982 1521 99.4 — — — — — — — 0.0% -2.00 — — — +0.01 1984 1801 135.0 — — — — -65 -14 +95 53.1% +0.15 5–11 (31%) 7–8 (47%) 94.0 -0.27
28 1983 1468 93.8 — — — — — — — 11.1% -1.89 0–1 — — +0.48 1985 1605 125.4 — — — — +12 +115 +210 37.7% -0.97 1–10 (9%) 0–1 — -0.88
29 1984 1459 102.4 — — — — — — — 0.0% -1.50 — 0–1 — -0.02 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
32 1987 1451 91.3 — — — — — — — 0.0% -5.50 — — — -0.06 — — — — — — — — — — — — — — — —
Career — 1629 106.1 — — — — +44 -70 +25 39.8% -0.84 18–22 (45%) 10–10 (50%) 101.4 +6.39 — 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.