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

Kiyoko Nomura vs Patricia Bostrom H2H: 1-0

Kiyoko Nomura holds a 1–0 lead over Patricia Bostrom in their WTA head-to-head. Across 1 main-draw meeting, Kiyoko Nomura leads 1–0 on clay. Most recently, Kiyoko Nomura won the 1978 Tokyo Japan Open quarterfinal 7-5 6-3.

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

Kiyoko Nomura
JPN
H2H
1 – 0
1 main-draw meetings
Patricia Bostrom
USA Age 74

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Kiyoko Nomura 7-5 6-3 Patricia Bostrom Match data Oct 28, 1978* QF Tokyo Japan Open WTA 250 Clay

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
Kiyoko Nomura — — — 1,500 9 28 24.3% 0 0 0 0 0 0
Patricia Bostrom — — — 1,674 57 88 39.3% 0 0 0 0 1 1

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 Kiyoko Nomura Patricia Bostrom
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1969 1–1 50.0% — 1,502 0 0
18 — — — — — — — 1970 1–4 20.0% — 1,483 0 0
19 1973 0–7 0.0% — 1,411 0 0 1971 0–4 0.0% — 1,451 0 0
20 1974 0–3 0.0% — 1,404 0 0 1972 7–7 50.0% — 1,499 0 1
21 1975 1–3 25.0% — 1,405 0 0 1973 16–23 41.0% — 1,587 0 1
22 — — — — — — — 1974 12–10 54.5% — 1,654 0 1
23 — — — — — — — 1975 5–6 45.5% — 1,625 0 1
24 1978 3–2 60.0% — 1,456 0 0 1976 4–7 36.4% — 1,624 0 1
25 1979 3–7 30.0% — 1,456 0 0 1977 8–9 47.1% — 1,618 0 1
26 1980 2–5 28.6% — 1,440 0 0 1978 3–16 15.8% — 1,516 0 1
27 1981 0–1 0.0% — 1,431 0 0 1979 0–1 0.0% — 1,504 0 1

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 Kiyoko Nomura Patricia Bostrom
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 %
18 — — — — — — — — — — — — — — — — — 1970 — — — — 1 2 3 33.3% 0 2 2 0.0% — — — —
19 1973 — — — — 0 5 5 0.0% 0 2 2 0.0% — — — — 1971 0 1 1 0.0% 0 2 2 0.0% 0 1 1 0.0% — — — —
20 1974 — — — — 0 1 1 0.0% 0 2 2 0.0% — — — — 1972 5 2 7 71.4% 0 3 3 0.0% 1 2 3 33.3% — — — —
21 1975 — — — — 0 1 1 0.0% 1 2 3 33.3% — — — — 1973 4 6 10 40.0% 5 10 15 33.3% 7 7 14 50.0% — — — —
22 — — — — — — — — — — — — — — — — — 1974 8 4 12 66.7% 0 1 1 0.0% 1 2 3 33.3% 3 3 6 50.0%
23 — — — — — — — — — — — — — — — — — 1975 1 1 2 50.0% 0 1 1 0.0% — — — — 2 1 3 66.7%
24 1978 — — — — 2 1 3 66.7% 1 1 2 50.0% — — — — 1976 2 1 3 66.7% 0 2 2 0.0% 1 3 4 25.0% 1 1 2 50.0%
25 1979 — — — — 0 3 3 0.0% 1 1 2 50.0% — — — — 1977 2 1 3 66.7% 1 1 2 50.0% 2 5 7 28.6% 3 2 5 60.0%
26 1980 0 1 1 0.0% 0 3 3 0.0% — — — — — — — — 1978 0 4 4 0.0% 1 4 5 20.0% 2 5 7 28.6% 0 3 3 0.0%
27 1981 0 1 1 0.0% — — — — — — — — — — — — 1979 — — — — — — — — 0 1 1 0.0% — — — —
Career — 0 2 2 0.0% 2 14 16 12.5% 3 8 11 27.3% — — — — — 22 20 42 52.4% 8 26 34 23.5% 14 28 42 33.3% 9 10 19 47.4%

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 Kiyoko Nomura Patricia Bostrom
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 — — — — — — — — — — — — — — — — 1969 1503 100.5 — — — — — — — 40.0% -0.60 1–0 — — +0.10
18 — — — — — — — — — — — — — — — — 1970 1484 99.6 — — — — — +32 — 20.0% -2.60 — — — -0.16
19 1973 1412 82.7 — — — — — +19 — 6.7% -3.80 0–1 — — +0.61 1971 1452 99.7 — — — — — — — 11.1% -3.00 0–1 — — -0.15
20 1974 1405 104.9 — — — — — — — 0.0% -4.83 — — — -0.29 1972 1500 99.4 — — — — +123 -57 -9 46.9% -0.56 3–1 (75%) 2–1 (67%) — +2.43
21 1975 1405 101.9 — — — — — — +80 36.4% -1.00 1–2 (33%) 1–0 — +0.42 1973 1588 114.9 — — — — +7 -115 -22 39.3% -0.73 5–3 (63%) 0–3 (0%) 101.2 +0.87
22 — — — — — — — — — — — — — — — — 1974 1655 122.8 — — — — +30 — -96 51.1% +0.15 3–0 (100%) — — +1.81
23 — — — — — — — — — — — — — — — — 1975 1626 110.1 — — — — +103 — — 42.3% -0.15 3–1 (75%) 1–2 (33%) 101.9 +1.58
24 1978 1456 102.4 — — — — — +17 — 60.0% 0.00 — — — +0.45 1976 1624 114.2 — — — — +86 — -46 28.6% -1.43 1–0 0–1 — -0.62
25 1979 1456 107.1 — — — — — -15 — 34.8% -1.22 1–2 (33%) 1–0 — +0.22 1977 1619 116.5 — — — — +106 — -82 51.4% +0.20 1–2 (33%) 2–3 (40%) 98.5 +2.87
26 1980 1440 96.2 — — — — — -71 — 25.0% -1.31 2–0 0–3 (0%) — +0.25 1978 1517 103.1 — — — — +118 -78 -14 17.9% -2.54 0–1 — — +0.45
27 1981 1432 98.1 — — — — — — — 33.3% -1.67 0–1 — — +0.08 1979 1504 95.7 — — — — — — — 0.0% -4.50 — — — +0.08
Career — 1500 98.0 — — — — — -8 +80 28.6% -1.80 4–6 (40%) 2–3 (40%) 98.4 +4.70 — 1675 114.8 — — — — +68 -84 -39 38.4% -0.85 17–9 (65%) 5–10 (33%) 103.0 +6.48

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.