H2H data updated: 2026-10-29 00:00 UTC

Rosie Casals vs Ann Kiyomura Hayashi H2H: 1-2

Ann Kiyomura Hayashi holds a 2–1 lead over Rosie Casals in their WTA head-to-head. Across 3 main-draw meetings, Ann Kiyomura Hayashi leads 2–1 on carpet. Most recently, Rosie Casals won the 1979 Detroit quarterfinal 0-6 6-4 6-4.

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Rosie Casals
USA Age 78 Right-Handed 159 cm / 5'3"
H2H
1 – 2
3 main-draw meetings
Ann Kiyomura Hayashi
USA

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Rosie Casals 0-6 6-4 6-4 Ann Kiyomura Hayashi Match data Feb 24, 1979* QF Detroit WTA 250 Carpet
Ann Kiyomura Hayashi 6-3 6-4 Rosie Casals Match data Jan 12, 1979* R16 Oakland WTA 250 Carpet
Ann Kiyomura Hayashi 6-2 6-1 Rosie Casals Match data Oct 7, 1977* R16 Atlanta WTA 250 Carpet

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
Rosie Casals — #6 — 2,213 594 323 64.8% 0 0 0 3 9 12
Ann Kiyomura Hayashi — — — 1,927 182 200 47.6% 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.

Rosie Casals Ann Kiyomura Hayashi
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
1968 36–14 72.0% — 1,750 0 1 1968 0–1 0.0% — 1,488 0 0
1969 42–19 68.9% — 1,877 0 1 1969 0–1 0.0% — 1,473 0 0
1970 52–21 71.2% — 2,043 0 4 1970 0–1 0.0% — 1,459 0 0
1971 92–31 74.8% — 2,172 0 7 1971 0–1 0.0% — 1,457 0 0
1972 64–26 71.1% — 2,105 0 10 1972 5–4 55.6% — 1,516 0 0
1973 81–28 74.3% — 2,139 0 12 1973 28–30 48.3% — 1,648 0 0
1974 43–17 71.7% — 2,136 0 12 1974 24–13 64.9% — 1,789 0 0
1975 20–14 58.8% — 2,002 0 12 1975 7–12 36.8% — 1,749 0 0
1976 39–17 69.6% #6 2,127 0 12 1976 9–16 36.0% — 1,725 0 0
1977 41–20 67.2% #6 2,057 0 12 1977 4–8 33.3% — 1,741 0 0
1978 24–15 61.5% — 2,013 0 12 1978 10–7 58.8% — 1,812 0 1
1979 19–26 42.2% — 1,828 0 12 1979 26–22 54.2% — 1,876 0 1
1980 14–25 35.9% — 1,680 0 12 1980 13–20 39.4% — 1,720 0 1
1981 12–14 46.2% — 1,687 0 12 1981 23–19 54.8% — 1,853 0 2
1982 4–8 33.3% — 1,667 0 12 1982 18–20 47.4% — 1,829 0 2
1983 9–12 42.9% — 1,661 0 12 1983 13–20 39.4% — 1,717 0 2
1984 1–4 20.0% #172 1,609 0 12 1984 2–5 28.6% — 1,687 0 2
1985 1–4 20.0% — 1,573 0 12 — — — — — — —
1986 0–2 0.0% — 1,547 0 12 — — — — — — —
1988 0–2 0.0% — 1,523 0 12 — — — — — — —
1989 0–2 0.0% — 1,499 0 12 — — — — — — —
1990 0–1 0.0% — 1,491 0 12 — — — — — — —
1991 0–1 0.0% — 1,476 0 12 — — — — — — —

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.

Rosie Casals Ann Kiyomura Hayashi
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 9 2 11 81.8% 5 2 7 71.4% 18 8 26 69.2% 4 2 6 66.7% 1968 0 1 1 0.0% — — — — — — — — — — — —
1969 4 4 8 50.0% 15 6 21 71.4% 22 7 29 75.9% 1 2 3 33.3% 1969 0 1 1 0.0% — — — — — — — — — — — —
1970 8 3 11 72.7% 29 8 37 78.4% 13 6 19 68.4% 2 4 6 33.3% 1970 0 1 1 0.0% — — — — — — — — — — — —
1971 14 4 18 77.8% 25 10 35 71.4% 22 8 30 73.3% 31 9 40 77.5% 1971 — — — — — — — — 0 1 1 0.0% — — — —
1972 16 6 22 72.7% 11 6 17 64.7% 13 6 19 68.4% 24 8 32 75.0% 1972 — — — — 1 1 2 50.0% 4 2 6 66.7% 0 1 1 0.0%
1973 18 5 23 78.3% 20 5 25 80.0% 12 4 16 75.0% 31 14 45 68.9% 1973 4 5 9 44.4% 7 7 14 50.0% 11 11 22 50.0% 6 7 13 46.2%
1974 6 4 10 60.0% 8 3 11 72.7% 6 2 8 75.0% 23 7 30 76.7% 1974 5 2 7 71.4% 1 2 3 33.3% 14 7 21 66.7% 4 2 6 66.7%
1975 2 4 6 33.3% 5 4 9 55.6% 7 2 9 77.8% 6 4 10 60.0% 1975 4 4 8 50.0% 0 1 1 0.0% 2 2 4 50.0% 0 4 4 0.0%
1976 4 2 6 66.7% 3 1 4 75.0% 7 2 9 77.8% 25 12 37 67.6% 1976 0 1 1 0.0% 2 2 4 50.0% 2 4 6 33.3% 5 9 14 35.7%
1977 14 5 19 73.7% 7 4 11 63.6% 4 1 5 80.0% 16 10 26 61.5% 1977 0 1 1 0.0% 0 1 1 0.0% 2 1 3 66.7% 2 5 7 28.6%
1978 5 2 7 71.4% 2 1 3 66.7% 2 2 4 50.0% 15 10 25 60.0% 1978 4 2 6 66.7% 4 0 4 100.0% 1 2 3 33.3% 1 3 4 25.0%
1979 4 7 11 36.4% 1 3 4 25.0% 3 3 6 50.0% 11 13 24 45.8% 1979 10 7 17 58.8% — — — — 1 2 3 33.3% 15 13 28 53.6%
1980 3 7 10 30.0% — — — — 4 6 10 40.0% 7 12 19 36.8% 1980 7 7 14 50.0% — — — — 3 5 8 37.5% 3 8 11 27.3%
1981 7 4 11 63.6% 0 3 3 0.0% 5 5 10 50.0% 0 2 2 0.0% 1981 2 4 6 33.3% 2 2 4 50.0% 9 6 15 60.0% 10 7 17 58.8%
1982 1 3 4 25.0% 0 1 1 0.0% 2 3 5 40.0% 1 1 2 50.0% 1982 6 5 11 54.5% 0 1 1 0.0% 7 6 13 53.8% 5 8 13 38.5%
1983 4 5 9 44.4% 1 1 2 50.0% 4 3 7 57.1% 0 3 3 0.0% 1983 5 5 10 50.0% — — — — 4 6 10 40.0% 4 9 13 30.8%
1984 1 1 2 50.0% 0 2 2 0.0% 0 1 1 0.0% — — — — 1984 0 2 2 0.0% — — — — 2 2 4 50.0% 0 1 1 0.0%
1985 1 3 4 25.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
1986 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
1988 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
1989 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
1990 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
1991 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — — — — — —
Career 121 75 196 61.7% 132 65 197 67.0% 144 69 213 67.6% 197 113 310 63.5% Career 47 48 95 49.5% 17 17 34 50.0% 62 57 119 52.1% 55 77 132 41.7%

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.

Rosie Casals Ann Kiyomura Hayashi
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 1751 130.0 — — — — +41 -201 -25 68.8% +1.61 7–9 (44%) — — +0.46 1968 1488 90.8 — — — — — — — 0.0% -6.00 — — — -0.08
1969 1878 140.7 — — — — -130 -92 +93 64.3% +1.09 12–6 (67%) — — -4.14 1969 1473 94.6 — — — — — — — 0.0% -4.50 — — — +0.08
1970 2043 161.0 — — — — -151 +10 +19 68.1% +1.60 11–5 (69%) 1–3 (25%) 104.5 -10.75 1970 1460 98.9 — — — — — — — 0.0% -2.00 — 0–1 — +0.19
1971 2173 168.5 — — — — +114 -75 -19 71.2% +1.62 18–13 (58%) 6–9 (40%) 96.2 -13.17 1971 1457 104.8 — — — — — — — 33.3% -0.67 0–1 — — -0.19
1972 2106 158.7 — — — — +68 -51 +59 66.5% +1.41 15–7 (68%) 9–6 (60%) 102.7 -8.31 1972 1516 107.6 — — — — — — +85 47.6% +0.24 3–0 (100%) 0–1 — +1.17
1973 2139 165.9 — — — — +112 -17 +17 71.1% +1.70 15–13 (54%) 8–12 (40%) 96.6 -10.99 1973 1648 127.6 — — — — -75 -23 -24 50.0% -0.14 8–12 (40%) 4–4 (50%) 99.3 +4.10
1974 2136 163.5 — — — — +103 +14 +14 68.8% +1.15 6–8 (43%) 5–4 (56%) 96.0 -9.26 1974 1789 136.8 — — — — -106 -163 +40 59.5% +0.55 8–4 (67%) 2–1 (67%) 107.2 +0.84
1975 2003 147.3 — — — — +25 +90 +135 59.8% +0.83 5–9 (36%) 3–4 (43%) 89.5 -2.82 1975 1750 124.3 — — — — -7 — +32 38.6% -1.16 3–5 (38%) 2–1 (67%) 100.1 -0.93
1976 2128 162.5 — — — — +44 -45 +52 65.5% +1.01 7–4 (64%) 6–3 (67%) 102.3 -7.85 1976 1725 128.2 — — — — -54 -76 +49 41.1% -0.80 3–5 (38%) 1–1 — -0.98
1977 2058 157.4 — — — — +113 -43 +129 64.5% +0.90 8–6 (57%) 6–5 (55%) 100.5 -6.67 1977 1742 135.5 — — — — -69 — +42 37.0% -0.93 1–2 (33%) 0–1 — -1.46
1978 2014 156.7 — — — — +89 -40 +109 57.0% +0.57 10–7 (59%) 1–5 (17%) 96.0 -3.72 1978 1812 140.6 — — — — -59 -137 -23 56.8% +0.62 2–1 (67%) 1–2 (33%) 100.7 -0.52
1979 1828 144.5 — — — — +54 +109 +234 46.6% -0.42 7–10 (41%) 6–2 (75%) 94.5 -3.07 1979 1877 150.6 — — — — +16 — -130 53.6% +0.14 12–8 (60%) 5–4 (56%) 104.3 -0.27
1980 1681 130.9 — — — — +19 — +233 40.4% -0.67 3–8 (27%) 3–8 (27%) 89.1 -2.38 1980 1721 127.8 — — — — +27 — -41 46.7% -0.05 4–9 (31%) 2–4 (33%) 91.8 -0.82
1981 1687 134.5 — — — — +87 +183 +144 46.8% +0.19 5–7 (42%) 0–4 (0%) 91.4 +0.33 1981 1853 136.0 — — — — -25 -140 -63 53.7% +0.03 6–5 (55%) 3–2 (60%) 101.7 -0.52
1982 1668 113.9 — — — — +43 — +125 39.3% -0.75 1–3 (25%) 0–2 — -0.54 1982 1829 133.9 — — — — -40 — -1 43.0% -0.73 9–5 (64%) 6–1 (86%) 108.1 -4.07
1983 1662 117.4 — — — — -25 — +150 44.9% -0.27 3–4 (43%) 1–0 — -0.33 1983 1718 131.1 — — — — +25 — +28 42.0% -0.68 2–3 (40%) 6–3 (67%) 100.1 -1.68
1984 1609 94.3 — — — — — — — 18.2% -2.82 1–0 — — +0.56 1984 1688 109.4 — — — — -21 — +87 26.7% -2.27 1–0 1–0 — -0.36
1985 1574 92.4 — — — — +9 — — 11.1% -2.78 0–1 0–1 — +0.27 — — — — — — — — — — — — — — — —
1986 1548 97.2 — — — — — — — 0.0% -3.00 — — — +0.07 — — — — — — — — — — — — — — — —
1988 1523 93.9 — — — — — — — 0.0% -4.25 — — — 0.00 — — — — — — — — — — — — — — — —
1989 1500 89.7 — — — — — — — 0.0% -4.50 — — — +0.15 — — — — — — — — — — — — — — — —
1990 1491 100.4 — — — — — — — 0.0% -2.50 — — — -0.03 — — — — — — — — — — — — — — — —
1991 1476 94.6 — — — — — — — 0.0% -4.50 — — — +0.17 — — — — — — — — — — — — — — — —
Career 2214 159.5 — — — — +65 -31 +61 62.3% +0.97 134–120 (53%) 55–68 (45%) 91.0 -9.04 Career 1927 140.4 — — — — -21 -77 +2 48.0% -0.26 62–60 (51%) 33–26 (56%) 104.8 -1.46

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.