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

Kym Ruddell vs Naoko Sato H2H: 0-2

Naoko Sato holds a 2–0 lead over Kym Ruddell in their WTA head-to-head. Across 2 main-draw meetings, Naoko Sato leads 1–0 on clay and 1–0 on grass. Most recently, Naoko Sato won the 1978 Tokyo Japan Open round of 16 7-6 6-0.

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Kym Ruddell
AUS Age 71
H2H
0 – 2
2 main-draw meetings
Naoko Sato
JPN Age 71

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Naoko Sato 7-6 6-0 Kym Ruddell Match data Oct 27, 1978* R16 Tokyo Japan Open WTA 250 Clay
Naoko Sato 6-4 6-4 Kym Ruddell Match data Jan 9, 1977* R32 Australian Open Grand Slam 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
Kym Ruddell — — — 1,648 39 47 45.3% 0 0 0 0 1 1
Naoko Sato — — — 1,628 56 91 38.1% 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 Kym Ruddell Naoko Sato
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1972 2–3 40.0% — 1,504 0 0
18 1974 1–2 33.3% — 1,487 0 0 1973 4–6 40.0% — 1,495 0 0
19 1975 7–9 43.8% — 1,499 0 0 1974 7–16 30.4% — 1,452 0 0
20 1976 5–4 55.6% — 1,533 0 1 1975 5–7 41.7% — 1,492 0 0
21 1977 11–12 47.8% — 1,564 0 1 1976 4–8 33.3% — 1,530 0 0
22 1978 7–10 41.2% — 1,545 0 1 1977 8–12 40.0% — 1,566 0 0
23 1979 7–7 50.0% — 1,591 0 1 1978 6–7 46.2% — 1,594 0 0
24 1980 1–3 25.0% — 1,571 0 1 1979 8–9 47.1% — 1,594 0 0
25 — — — — — — — 1980 11–10 52.4% — 1,592 0 0
26 — — — — — — — 1981 1–6 14.3% — 1,531 0 0
27 — — — — — — — 1982 0–1 0.0% — 1,520 0 0
28 — — — — — — — 1983 0–4 0.0% — 1,467 0 0
29 — — — — — — — 1984 0–1 0.0% — 1,458 0 0
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 Kym Ruddell Naoko Sato
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 %
17 — — — — — — — — — — — — — — — — — 1972 0 1 1 0.0% 0 1 1 0.0% — — — — 2 1 3 66.7%
18 1974 — — — — — — — — 1 2 3 33.3% — — — — 1973 — — — — 2 4 6 33.3% 2 2 4 50.0% — — — —
19 1975 — — — — 3 3 6 50.0% 3 4 7 42.9% — — — — 1974 2 2 4 50.0% 1 6 7 14.3% 2 4 6 33.3% 0 1 1 0.0%
20 1976 — — — — 2 1 3 66.7% 2 3 5 40.0% — — — — 1975 — — — — 3 2 5 60.0% 0 2 2 0.0% 0 1 1 0.0%
21 1977 0 1 1 0.0% 2 1 3 66.7% 3 6 9 33.3% 5 3 8 62.5% 1976 — — — — 0 4 4 0.0% 4 4 8 50.0% — — — —
22 1978 1 3 4 25.0% 0 2 2 0.0% 0 3 3 0.0% 2 1 3 66.7% 1977 0 1 1 0.0% 1 2 3 33.3% 7 9 16 43.8% — — — —
23 1979 1 1 2 50.0% — — — — 5 5 10 50.0% — — — — 1978 — — — — 1 2 3 33.3% 5 4 9 55.6% 0 1 1 0.0%
24 1980 — — — — — — — — 1 3 4 25.0% — — — — 1979 0 2 2 0.0% — — — — 4 5 9 44.4% — — — —
25 — — — — — — — — — — — — — — — — — 1980 1 1 2 50.0% 4 4 8 50.0% 3 4 7 42.9% — — — —
26 — — — — — — — — — — — — — — — — — 1981 0 3 3 0.0% 1 2 3 33.3% 0 1 1 0.0% — — — —
27 — — — — — — — — — — — — — — — — — 1982 — — — — — — — — 0 1 1 0.0% — — — —
28 — — — — — — — — — — — — — — — — — 1983 0 1 1 0.0% — — — — 0 2 2 0.0% — — — —
29 — — — — — — — — — — — — — — — — — 1984 — — — — — — — — 0 1 1 0.0% — — — —
32 — — — — — — — — — — — — — — — — — 1987 — — — — — — — — 0 1 1 0.0% — — — —
Career — 2 5 7 28.6% 7 7 14 50.0% 15 26 41 36.6% 7 4 11 63.6% — 3 11 14 21.4% 13 27 40 32.5% 27 40 67 40.3% 2 4 6 33.3%

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 Kym Ruddell Naoko Sato
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
17 — — — — — — — — — — — — — — — — 1972 1505 88.1 — — — — +47 — — 36.4% -2.00 1–0 1–0 — +0.31
18 1974 1488 96.8 — — — — — — +46 37.5% -1.00 1–1 — — +0.43 1973 1496 92.8 — — — — — -8 +52 40.9% -1.41 1–1 — — +1.13
19 1975 1500 109.9 — — — — — +40 +27 45.9% 0.00 2–3 (40%) 0–2 — +1.40 1974 1453 91.0 — — — — +95 -59 +77 34.0% -1.11 3–4 (43%) 1–3 (25%) 97.2 +1.33
20 1976 1533 98.8 — — — — — +37 +6 50.0% -0.55 2–0 2–1 (67%) — +1.78 1975 1493 95.6 — — — — — -27 — 40.7% -1.33 2–1 (67%) 1–1 — +0.98
21 1977 1564 112.9 — — — — +51 +32 -62 44.9% -0.16 3–0 (100%) 3–0 (100%) 107.2 +3.62 1976 1530 116.3 — — — — — -82 +48 28.0% -1.64 2–1 (67%) — — -0.39
22 1978 1546 104.9 — — — — +73 — -94 43.2% -0.70 5–5 (50%) 1–1 — +1.31 1977 1567 121.7 — — — — — -112 +16 43.8% -0.69 3–5 (38%) 3–1 (75%) 101.1 +1.63
23 1979 1591 110.0 — — — — — — -49 45.2% -0.74 3–0 (100%) 3–1 (75%) 105.4 +1.30 1978 1595 111.7 — — — — — -138 +17 48.3% -0.17 1–2 (33%) 1–1 — +0.54
24 1980 1571 97.8 — — — — — — -62 33.3% -1.78 0–1 1–0 — -0.07 1979 1594 114.4 — — — — — — +13 47.4% +0.05 2–2 (50%) 1–1 — +1.58
25 — — — — — — — — — — — — — — — — 1980 1593 108.7 — — — — — -117 -11 53.2% +0.30 2–3 (40%) 1–1 — +1.74
26 — — — — — — — — — — — — — — — — 1981 1531 97.3 — — — — -43 -32 — 23.5% -1.88 1–2 (33%) 1–1 — +0.51
27 — — — — — — — — — — — — — — — — 1982 1520 99.4 — — — — — — — 0.0% -2.00 — — — +0.01
28 — — — — — — — — — — — — — — — — 1983 1467 93.8 — — — — — — — 11.1% -1.89 0–1 — — +0.48
29 — — — — — — — — — — — — — — — — 1984 1459 102.4 — — — — — — — 0.0% -1.50 — 0–1 — -0.02
32 — — — — — — — — — — — — — — — — 1987 1451 91.3 — — — — — — — 0.0% -5.50 — — — -0.06
Career — 1649 109.1 — — — — +61 +37 -30 44.4% -0.49 16–10 (62%) 10–5 (67%) 108.6 +11.36 — 1629 106.1 — — — — +45 -69 +25 39.8% -0.84 18–22 (45%) 10–10 (50%) 101.4 +6.65

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.