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

Kazuko Sawamatsu vs Nancy Ornstein H2H: 1-0

Kazuko Sawamatsu holds a 1–0 lead over Nancy Ornstein in their WTA head-to-head. Across 1 main-draw meeting, Kazuko Sawamatsu leads 1–0 on grass. Most recently, Kazuko Sawamatsu won the 1973 US Open round of 64 6-2 6-2.

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Kazuko Sawamatsu
JPN Age 75 Right-Handed
H2H
1 – 0
1 main-draw meetings
Nancy Ornstein
USA Age 74

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kazuko Sawamatsu 6-2 6-2 Nancy Ornstein Match data Sep 1, 1973* R64 US 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
Kazuko Sawamatsu — — — 1,954 179 100 64.2% 0 0 0 1 8 9
Nancy Ornstein — — — 1,567 41 81 33.6% 0 0 0 0 2 2

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 Kazuko Sawamatsu Nancy Ornstein
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1968 3–2 60.0% — 1,522 0 0
17 1968 9–7 56.2% — 1,556 0 0 1969 0–3 0.0% — 1,506 0 0
18 1969 16–8 66.7% — 1,674 0 1 1970 4–3 57.1% — 1,529 0 1
19 1970 10–8 55.6% — 1,727 0 2 1971 2–7 22.2% — 1,505 0 1
20 1971 18–10 64.3% — 1,826 0 3 1972 4–14 22.2% — 1,488 0 1
21 1972 28–16 63.6% — 1,848 0 6 1973 0–6 0.0% — 1,459 0 1
22 1973 38–21 64.4% — 1,825 0 6 1974 5–9 35.7% — 1,454 0 1
23 1974 37–20 64.9% — 1,900 0 8 1975 5–11 31.2% — 1,449 0 1
24 1975 23–10 69.7% — 1,954 0 9 1976 1–5 16.7% — 1,425 0 1
25 — — — — — — — 1977 6–5 54.5% — 1,509 0 1
26 — — — — — — — 1978 1–3 25.0% — 1,504 0 1
27 — — — — — — — 1979 4–4 50.0% — 1,528 0 2
28 — — — — — — — 1980 5–6 45.5% — 1,534 0 2
29 — — — — — — — 1981 1–3 25.0% — 1,504 0 2

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 Kazuko Sawamatsu Nancy Ornstein
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 — — — — — — — — — — — — — — — — — 1968 0 1 1 0.0% 3 1 4 75.0% — — — — — — — —
17 1968 — — — — 9 5 14 64.3% 0 2 2 0.0% — — — — 1969 0 1 1 0.0% — — — — 0 2 2 0.0% — — — —
18 1969 — — — — 13 6 19 68.4% 3 2 5 60.0% — — — — 1970 3 0 3 100.0% 0 2 2 0.0% 1 1 2 50.0% — — — —
19 1970 — — — — 3 4 7 42.9% 4 4 8 50.0% — — — — 1971 0 2 2 0.0% 2 4 6 33.3% 0 1 1 0.0% — — — —
20 1971 — — — — 4 4 8 50.0% 14 6 20 70.0% — — — — 1972 0 1 1 0.0% 2 5 7 28.6% 2 4 6 33.3% 0 4 4 0.0%
21 1972 1 1 2 50.0% 11 7 18 61.1% 13 8 21 61.9% 3 0 3 100.0% 1973 0 1 1 0.0% 0 2 2 0.0% 0 2 2 0.0% 0 1 1 0.0%
22 1973 3 1 4 75.0% 18 8 26 69.2% 16 9 25 64.0% 1 3 4 25.0% 1974 2 1 3 66.7% 0 5 5 0.0% 0 1 1 0.0% — — — —
23 1974 6 1 7 85.7% 11 9 20 55.0% 17 9 26 65.4% 3 1 4 75.0% 1975 2 3 5 40.0% 1 2 3 33.3% 0 1 1 0.0% 1 2 3 33.3%
24 1975 — — — — 19 7 26 73.1% 4 3 7 57.1% — — — — 1976 1 3 4 25.0% 0 1 1 0.0% — — — — 0 1 1 0.0%
25 — — — — — — — — — — — — — — — — — 1977 1 1 2 50.0% — — — — — — — — 2 2 4 50.0%
26 — — — — — — — — — — — — — — — — — 1978 — — — — 0 2 2 0.0% 1 1 2 50.0% — — — —
27 — — — — — — — — — — — — — — — — — 1979 0 1 1 0.0% — — — — — — — — 0 1 1 0.0%
28 — — — — — — — — — — — — — — — — — 1980 1 2 3 33.3% — — — — — — — — — — — —
Career — 10 3 13 76.9% 88 50 138 63.8% 71 43 114 62.3% 7 4 11 63.6% — 10 17 27 37.0% 8 24 32 25.0% 4 13 17 23.5% 3 11 14 21.4%

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 Kazuko Sawamatsu Nancy Ornstein
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 — — — — — — — — — — — — — — — — 1968 1523 108.0 — — — — — +35 — 60.0% +1.00 — — — +0.01
17 1968 1556 119.1 — — — — — +59 — 56.3% +0.87 2–0 — — +0.07 1969 1506 99.8 — — — — — — — 0.0% -3.33 — — — -0.56
18 1969 1674 127.4 — — — — — +49 -122 64.7% +1.25 2–1 (67%) — — +0.72 1970 1529 102.0 — — — — +65 — — 47.1% -0.53 3–0 (100%) 0–1 — +1.06
19 1970 1727 133.7 — — — — — -29 -107 59.1% +0.75 2–6 (25%) — — -1.68 1971 1505 114.4 — — — — — +3 — 31.6% -1.10 1–2 (33%) 2–1 (67%) 99.5 +0.11
20 1971 1827 139.8 — — — — — -118 0 59.3% +0.81 6–1 (86%) 1–0 — -2.27 1972 1489 109.0 — — — — +28 +20 -5 21.6% -1.86 1–0 — — -0.49
21 1972 1848 149.8 — — — — -200 -59 +3 61.1% +1.22 5–4 (56%) — — -3.87 1973 1460 89.7 — — — — — — — 0.0% -3.92 — — — -0.54
22 1973 1826 145.5 — — — — -160 +61 +45 60.9% +0.99 10–5 (67%) 3–4 (43%) 104.0 +1.60 1974 1455 105.0 — — — — +67 -32 — 31.0% -1.52 2–1 (67%) 0–1 — -0.60
23 1974 1900 150.9 — — — — -79 -49 +35 61.7% +0.94 8–2 (80%) 4–3 (57%) 106.4 -3.51 1975 1449 101.6 — — — — +120 -15 — 28.1% -1.41 1–1 — — +1.12
24 1975 1955 150.1 — — — — — +26 -50 64.9% +1.09 6–2 (75%) 3–1 (75%) 106.5 -0.94 1976 1426 94.0 — — — — +63 — — 33.3% -1.73 0–3 (0%) 1–1 — +0.60
25 — — — — — — — — — — — — — — — — 1977 1509 111.1 — — — — +17 — — 48.0% +0.08 3–0 (100%) — — +1.06
26 — — — — — — — — — — — — — — — — 1978 1504 96.3 — — — — — — — 25.0% -2.50 — — — -0.07
27 — — — — — — — — — — — — — — — — 1979 1528 107.1 — — — — — — — 52.9% 0.00 0–3 (0%) 2–1 (67%) — +0.70
28 — — — — — — — — — — — — — — — — 1980 1535 105.6 — — — — -64 — — 44.4% -0.78 — 1–0 — -0.40
29 — — — — — — — — — — — — — — — — 1981 1504 101.1 — — — — — — — 33.3% -0.67 0–1 0–1 — -0.05
Career — 1955 150.4 — — — — -131 +6 +3 61.3% +1.01 41–21 (66%) 11–8 (58%) 110.7 -3.61 — 1567 107.2 — — — — +52 +4 -5 33.5% -1.22 11–11 (50%) 6–6 (50%) 103.5 +1.64

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.