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

Ann Kiyomura Hayashi vs Barbara Hallquist H2H: 1-0

Ann Kiyomura Hayashi holds a 1–0 lead over Barbara Hallquist in their WTA head-to-head. Across 1 main-draw meeting, Ann Kiyomura Hayashi leads 1–0 on grass. Most recently, Ann Kiyomura Hayashi won the 1981 Sydney International round of 64 6-2 6-4.

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

Ann Kiyomura Hayashi
USA
H2H
1 – 0
1 main-draw meetings
Barbara Hallquist
USA Age 69

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Ann Kiyomura Hayashi 6-2 6-4 Barbara Hallquist Match data Nov 25, 1981* R64 Sydney International WTA 500 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
Ann Kiyomura Hayashi — — — 1,925 182 200 47.6% 0 0 0 0 2 2
Barbara Hallquist — — — 1,777 67 90 42.7% 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.

Ann Kiyomura Hayashi Barbara Hallquist
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1968 0–1 0.0% — 1,488 0 0 1973 2–1 66.7% — 1,516 0 0
1969 0–1 0.0% — 1,473 0 0 1974 2–3 40.0% — 1,500 0 0
1970 0–1 0.0% — 1,459 0 0 1975 3–1 75.0% — 1,541 0 0
1971 0–1 0.0% — 1,457 0 0 1976 0–1 0.0% — 1,530 0 0
1972 5–4 55.6% — 1,516 0 0 1977 4–2 66.7% — 1,577 0 0
1973 28–30 48.3% — 1,648 0 0 1978 8–9 47.1% — 1,615 0 0
1974 24–13 64.9% — 1,789 0 0 1979 3–13 18.8% — 1,564 0 0
1975 7–12 36.8% — 1,749 0 0 1980 14–13 51.9% — 1,702 0 0
1976 9–16 36.0% — 1,724 0 0 1981 14–17 45.2% — 1,736 0 0
1977 4–8 33.3% — 1,740 0 0 1982 12–14 46.2% — 1,706 0 0
1978 10–7 58.8% — 1,809 0 1 1983 5–16 23.8% — 1,567 0 0
1979 26–22 54.2% — 1,874 0 1 — — — — — — —
1980 13–20 39.4% — 1,718 0 1 — — — — — — —
1981 23–19 54.8% — 1,852 0 2 — — — — — — —
1982 18–20 47.4% — 1,828 0 2 — — — — — — —
1983 13–20 39.4% — 1,716 0 2 — — — — — — —
1984 2–5 28.6% — 1,686 0 2 — — — — — — —

Surface Results by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Ann Kiyomura Hayashi Barbara Hallquist
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 %
1968 0 1 1 0.0% — — — — — — — — — — — — 1973 2 1 3 66.7% — — — — — — — — — — — —
1969 0 1 1 0.0% — — — — — — — — — — — — 1974 2 2 4 50.0% — — — — 0 1 1 0.0% — — — —
1970 0 1 1 0.0% — — — — — — — — — — — — 1975 — — — — — — — — 3 1 4 75.0% — — — —
1971 — — — — — — — — 0 1 1 0.0% — — — — 1976 — — — — 0 1 1 0.0% — — — — — — — —
1972 — — — — 1 1 2 50.0% 4 2 6 66.7% 0 1 1 0.0% 1977 — — — — 1 1 2 50.0% — — — — — — — —
1973 4 5 9 44.4% 7 7 14 50.0% 11 11 22 50.0% 6 7 13 46.2% 1978 3 4 7 42.9% 0 1 1 0.0% 1 2 3 33.3% — — — —
1974 5 2 7 71.4% 1 2 3 33.3% 14 7 21 66.7% 4 2 6 66.7% 1979 3 4 7 42.9% 0 1 1 0.0% 0 6 6 0.0% 0 2 2 0.0%
1975 4 4 8 50.0% 0 1 1 0.0% 2 2 4 50.0% 0 4 4 0.0% 1980 7 8 15 46.7% 2 2 4 50.0% 5 3 8 62.5% — — — —
1976 0 1 1 0.0% 2 2 4 50.0% 2 4 6 33.3% 5 9 14 35.7% 1981 7 6 13 53.8% — — — — 7 6 13 53.8% 0 5 5 0.0%
1977 0 1 1 0.0% 0 1 1 0.0% 2 1 3 66.7% 2 5 7 28.6% 1982 7 5 12 58.3% 0 3 3 0.0% 5 6 11 45.5% — — — —
1978 4 2 6 66.7% 4 0 4 100.0% 1 2 3 33.3% 1 3 4 25.0% 1983 3 8 11 27.3% 0 3 3 0.0% 1 3 4 25.0% 1 2 3 33.3%
1979 10 7 17 58.8% — — — — 1 2 3 33.3% 15 13 28 53.6% — — — — — — — — — — — — — — — — —
1980 7 7 14 50.0% — — — — 3 5 8 37.5% 3 8 11 27.3% — — — — — — — — — — — — — — — — —
1981 2 4 6 33.3% 2 2 4 50.0% 9 6 15 60.0% 10 7 17 58.8% — — — — — — — — — — — — — — — — —
1982 6 5 11 54.5% 0 1 1 0.0% 7 6 13 53.8% 5 8 13 38.5% — — — — — — — — — — — — — — — — —
1983 5 5 10 50.0% — — — — 4 6 10 40.0% 4 9 13 30.8% — — — — — — — — — — — — — — — — —
1984 0 2 2 0.0% — — — — 2 2 4 50.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — —
Career 47 48 95 49.5% 17 17 34 50.0% 62 57 119 52.1% 55 77 132 41.7% Career 34 38 72 47.2% 3 12 15 20.0% 22 28 50 44.0% 1 9 10 10.0%

Advanced Statistics Comparison by Career Season

Rows are aligned in career order because complete birth data is unavailable. 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.

Ann Kiyomura Hayashi Barbara Hallquist
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
1968 1488 90.8 — — — — — — — 0.0% -6.00 — — — -0.08 1973 1516 110.1 — — — — +80 — — 66.7% +2.33 — — — +0.83
1969 1473 94.6 — — — — — — — 0.0% -4.50 — — — +0.08 1974 1500 97.3 — — — — +94 — — 38.5% -0.85 2–1 (67%) 0–1 — +1.26
1970 1460 98.9 — — — — — — — 0.0% -2.00 — 0–1 — +0.19 1975 1541 102.9 — — — — — — +36 60.0% +0.60 2–0 1–1 — +0.62
1971 1457 104.8 — — — — — — — 33.3% -0.67 0–1 — — -0.19 1976 1530 102.4 — — — — — — — 33.3% -1.00 0–1 — — +0.08
1972 1516 107.6 — — — — — — +85 47.6% +0.24 3–0 (100%) 0–1 — +1.18 1977 1578 113.0 — — — — — — — 57.1% +0.21 2–0 1–0 — +0.31
1973 1648 127.6 — — — — -75 -23 -24 50.0% -0.14 8–12 (40%) 4–4 (50%) 99.3 +4.25 1978 1615 117.4 — — — — +32 — -43 48.6% -0.16 3–2 (60%) 2–1 (67%) — +0.27
1974 1789 136.8 — — — — -106 -163 +40 59.5% +0.55 8–4 (67%) 2–1 (67%) 107.2 +0.93 1979 1564 114.4 — — — — +88 — -66 27.0% -1.76 3–4 (43%) 0–1 — -0.88
1975 1750 124.3 — — — — -7 — +32 38.6% -1.16 3–5 (38%) 2–1 (67%) 100.1 -0.93 1980 1702 131.2 — — — — -29 -211 -89 52.4% -0.19 4–5 (44%) 6–1 (86%) 104.8 -1.74
1976 1724 127.9 — — — — -53 -75 +49 41.1% -0.80 3–5 (38%) 1–1 — -0.96 1981 1736 128.2 — — — — -10 — -69 43.2% -0.74 8–4 (67%) 2–0 — -2.03
1977 1740 135.0 — — — — -68 — +42 37.0% -0.93 1–2 (33%) 0–1 — -1.45 1982 1707 102.0 — — — — -3 -250 -62 44.1% -0.80 5–2 (71%) 4–4 (50%) 102.8 -0.61
1978 1810 140.1 — — — — -59 -135 -22 56.8% +0.62 2–1 (67%) 1–2 (33%) 100.7 -0.22 1983 1567 105.0 — — — — +48 -95 +32 28.3% -1.37 1–3 (25%) 0–3 (0%) 93.9 +0.68
1979 1875 150.3 — — — — +16 — -129 53.6% +0.14 12–8 (60%) 5–4 (56%) 104.4 -0.58 — — — — — — — — — — — — — — — —
1980 1719 127.4 — — — — +24 — -38 46.7% -0.05 4–9 (31%) 2–4 (33%) 91.8 -0.63 — — — — — — — — — — — — — — — —
1981 1852 135.7 — — — — -26 -139 -64 53.7% +0.03 6–5 (55%) 3–2 (60%) 101.7 -0.47 — — — — — — — — — — — — — — — —
1982 1828 133.7 — — — — -41 — 0 43.0% -0.73 9–5 (64%) 6–1 (86%) 108.1 -4.10 — — — — — — — — — — — — — — — —
1983 1717 130.9 — — — — +25 — +29 42.0% -0.68 2–3 (40%) 6–3 (67%) 100.2 -1.71 — — — — — — — — — — — — — — — —
1984 1687 109.3 — — — — -20 — +88 26.7% -2.27 1–0 1–0 — -0.36 — — — — — — — — — — — — — — — —
Career 1926 140.1 — — — — -21 -76 +3 48.0% -0.26 62–60 (51%) 33–26 (56%) 104.8 -1.34 Career 1777 121.4 — — — — +20 -188 -52 43.1% -0.66 30–22 (58%) 16–12 (57%) 106.6 -0.77

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.