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

Ann Kiyomura Hayashi vs Sandy Collins H2H: 1-0

Ann Kiyomura Hayashi holds a 1–0 lead over Sandy Collins 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 1983 Birmingham round of 32 6-1 6-3.

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Ann Kiyomura Hayashi
USA
H2H
1 – 0
1 main-draw meetings
Sandy Collins
USA Age 67

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Ann Kiyomura Hayashi 6-1 6-3 Sandy Collins Match data Jun 6, 1983* R32 Birmingham 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
Ann Kiyomura Hayashi — — — 1,925 182 200 47.6% 0 0 0 0 2 2
Sandy Collins — — — 1,823 89 151 37.1% 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.

Ann Kiyomura Hayashi Sandy Collins
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1968 0–1 0.0% — 1,488 0 0 1973 1–1 50.0% — 1,497 0 0
1969 0–1 0.0% — 1,473 0 0 1978 6–6 50.0% — 1,536 0 0
1970 0–1 0.0% — 1,459 0 0 1979 2–7 22.2% — 1,495 0 0
1971 0–1 0.0% — 1,457 0 0 1980 10–12 45.5% — 1,630 0 0
1972 5–4 55.6% — 1,516 0 0 1981 25–20 55.6% — 1,785 0 0
1973 28–30 48.3% — 1,648 0 0 1982 14–21 40.0% — 1,733 0 0
1974 24–13 64.9% — 1,789 0 0 1983 13–20 39.4% — 1,684 0 0
1975 7–12 36.8% — 1,749 0 0 1984 9–18 33.3% — 1,599 0 0
1976 9–16 36.0% — 1,724 0 0 1985 1–9 10.0% — 1,507 0 0
1977 4–8 33.3% — 1,740 0 0 1986 0–1 0.0% — 1,499 0 0
1978 10–7 58.8% — 1,809 0 1 1987 0–4 0.0% — 1,453 0 0
1979 26–22 54.2% — 1,874 0 1 1988 3–5 37.5% — 1,490 0 0
1980 13–20 39.4% — 1,718 0 1 1989 2–8 20.0% — 1,472 0 0
1981 23–19 54.8% — 1,852 0 2 1990 1–9 10.0% — 1,421 0 0
1982 18–20 47.4% — 1,828 0 2 1991 1–5 16.7% — 1,405 0 0
1983 13–20 39.4% — 1,716 0 2 1992 1–2 33.3% — 1,412 0 0
1984 2–5 28.6% — 1,686 0 2 1993 0–1 0.0% — 1,407 0 0
— — — — — — — 1994 0–2 0.0% — 1,393 0 0

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 Sandy Collins
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 1 1 2 50.0% — — — — — — — — — — — —
1969 0 1 1 0.0% — — — — — — — — — — — — 1978 2 2 4 50.0% 0 1 1 0.0% 0 1 1 0.0% — — — —
1970 0 1 1 0.0% — — — — — — — — — — — — 1979 0 1 1 0.0% 1 4 5 20.0% 1 1 2 50.0% 0 1 1 0.0%
1971 — — — — — — — — 0 1 1 0.0% — — — — 1980 4 6 10 40.0% 1 1 2 50.0% 0 1 1 0.0% 5 4 9 55.6%
1972 — — — — 1 1 2 50.0% 4 2 6 66.7% 0 1 1 0.0% 1981 4 5 9 44.4% 11 6 17 64.7% 3 2 5 60.0% 7 7 14 50.0%
1973 4 5 9 44.4% 7 7 14 50.0% 11 11 22 50.0% 6 7 13 46.2% 1982 3 2 5 60.0% 4 5 9 44.4% 0 2 2 0.0% 7 12 19 36.8%
1974 5 2 7 71.4% 1 2 3 33.3% 14 7 21 66.7% 4 2 6 66.7% 1983 5 6 11 45.5% 2 6 8 25.0% 2 3 5 40.0% 4 5 9 44.4%
1975 4 4 8 50.0% 0 1 1 0.0% 2 2 4 50.0% 0 4 4 0.0% 1984 7 6 13 53.8% 0 3 3 0.0% 0 6 6 0.0% 2 3 5 40.0%
1976 0 1 1 0.0% 2 2 4 50.0% 2 4 6 33.3% 5 9 14 35.7% 1985 1 5 6 16.7% 0 1 1 0.0% 0 2 2 0.0% 0 1 1 0.0%
1977 0 1 1 0.0% 0 1 1 0.0% 2 1 3 66.7% 2 5 7 28.6% 1986 — — — — — — — — 0 1 1 0.0% — — — —
1978 4 2 6 66.7% 4 0 4 100.0% 1 2 3 33.3% 1 3 4 25.0% 1987 0 2 2 0.0% — — — — 0 2 2 0.0% — — — —
1979 10 7 17 58.8% — — — — 1 2 3 33.3% 15 13 28 53.6% 1988 3 4 7 42.9% — — — — 0 1 1 0.0% — — — —
1980 7 7 14 50.0% — — — — 3 5 8 37.5% 3 8 11 27.3% 1989 1 5 6 16.7% — — — — 0 1 1 0.0% 1 2 3 33.3%
1981 2 4 6 33.3% 2 2 4 50.0% 9 6 15 60.0% 10 7 17 58.8% 1990 0 5 5 0.0% 1 3 4 25.0% — — — — 0 1 1 0.0%
1982 6 5 11 54.5% 0 1 1 0.0% 7 6 13 53.8% 5 8 13 38.5% 1991 1 2 3 33.3% 0 1 1 0.0% 0 1 1 0.0% 0 1 1 0.0%
1983 5 5 10 50.0% — — — — 4 6 10 40.0% 4 9 13 30.8% 1992 1 1 2 50.0% 0 1 1 0.0% — — — — — — — —
1984 0 2 2 0.0% — — — — 2 2 4 50.0% 0 1 1 0.0% 1993 — — — — — — — — — — — — 0 1 1 0.0%
— — — — — — — — — — — — — — — — — 1994 0 2 2 0.0% — — — — — — — — — — — —
Career 47 48 95 49.5% 17 17 34 50.0% 62 57 119 52.1% 55 77 132 41.7% Career 33 55 88 37.5% 20 32 52 38.5% 6 24 30 20.0% 26 38 64 40.6%

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 Sandy Collins
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 1497 99.4 — — — — — — — 50.0% 0.00 — — — +0.62
1969 1473 94.6 — — — — — — — 0.0% -4.50 — — — +0.08 1978 1537 117.1 — — — — +89 — — 57.1% +0.64 0–4 (0%) — — +0.85
1970 1460 98.9 — — — — — — — 0.0% -2.00 — 0–1 — +0.19 1979 1495 107.9 — — — — — -5 — 30.0% -0.55 0–2 0–1 — +1.38
1971 1457 104.8 — — — — — — — 33.3% -0.67 0–1 — — -0.19 1980 1631 128.8 — — — — +4 — — 48.9% +0.22 3–2 (60%) 1–2 (33%) 101.6 +0.03
1972 1516 107.6 — — — — — — +85 47.6% +0.24 3–0 (100%) 0–1 — +1.18 1981 1786 137.9 — — — — -48 -81 -187 52.6% -0.04 6–3 (67%) 5–4 (56%) 104.5 -1.75
1973 1648 127.6 — — — — -75 -23 -24 50.0% -0.14 8–12 (40%) 4–4 (50%) 99.3 +4.25 1982 1733 126.3 — — — — -17 -43 — 38.7% -0.91 6–3 (67%) 2–4 (33%) 103.2 -0.59
1974 1789 136.8 — — — — -106 -163 +40 59.5% +0.55 8–4 (67%) 2–1 (67%) 107.2 +0.93 1983 1684 124.1 — — — — +35 -29 -111 40.8% -0.63 2–3 (40%) 1–5 (17%) 95.5 -0.13
1975 1750 124.3 — — — — -7 — +32 38.6% -1.16 3–5 (38%) 2–1 (67%) 100.1 -0.93 1984 1600 117.7 — — — — +113 -7 -91 34.4% -0.97 4–5 (44%) 1–2 (33%) 98.9 -0.20
1976 1724 127.9 — — — — -53 -75 +49 41.1% -0.80 3–5 (38%) 1–1 — -0.96 1985 1508 99.2 — — — — +101 — — 18.2% -2.36 0–2 1–0 — +0.70
1977 1740 135.0 — — — — -68 — +42 37.0% -0.93 1–2 (33%) 0–1 — -1.45 1986 1500 101.5 — — — — — — — 33.3% -2.33 0–1 — — -0.02
1978 1810 140.1 — — — — -59 -135 -22 56.8% +0.62 2–1 (67%) 1–2 (33%) 100.7 -0.22 1987 1453 94.2 — — — — — — — 11.1% -2.56 0–1 — — +0.23
1979 1875 150.3 — — — — +16 — -129 53.6% +0.14 12–8 (60%) 5–4 (56%) 104.4 -0.58 1988 1491 114.4 — — — — +84 — — 42.1% -0.63 1–2 (33%) 1–3 (25%) 97.4 -0.02
1980 1719 127.4 — — — — +24 — -38 46.7% -0.05 4–9 (31%) 2–4 (33%) 91.8 -0.63 1989 1473 103.4 — — — — +55 — — 23.8% -1.71 0–1 2–0 — +0.37
1981 1852 135.7 — — — — -26 -139 -64 53.7% +0.03 6–5 (55%) 3–2 (60%) 101.7 -0.47 1990 1421 95.6 — — — — +39 +113 — 17.4% -2.65 1–2 (33%) — — +0.17
1982 1828 133.7 — — — — -41 — 0 43.0% -0.73 9–5 (64%) 6–1 (86%) 108.1 -4.10 1991 1406 104.6 — — — — +39 — — 21.4% -2.00 1–1 0–1 — +0.16
1983 1717 130.9 — — — — +25 — +29 42.0% -0.68 2–3 (40%) 6–3 (67%) 100.2 -1.71 1992 1413 104.4 — — — — — — — 33.3% -0.83 — 0–1 — +0.18
1984 1687 109.3 — — — — -20 — +88 26.7% -2.27 1–0 1–0 — -0.36 1993 1407 95.8 — — — — — — — 0.0% -5.00 — — — -0.07
— — — — — — — — — — — — — — — — 1994 1393 103.0 — — — — — — — 33.3% -1.33 0–2 1–1 — -0.05
Career 1926 140.1 — — — — -21 -76 +3 48.0% -0.26 62–60 (51%) 33–26 (56%) 104.8 -1.34 Career 1823 125.8 — — — — +27 -35 -127 39.2% -0.76 24–34 (41%) 15–24 (38%) 92.7 +0.78

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.