H2H data updated: 2026-09-14 00:00 UTC

Rosie Casals vs Billie Jean King H2H: 6-34 (incl. walkovers)

Rosie Casals vs Billie Jean King: 5–33 excluding walkovers; 6–34 including 2 walkovers. Across 40 main-draw results including walkovers, Billie Jean King leads 15–2 on carpet and 11–1 on grass. Most recently, Billie Jean King won the 1983 Wimbledon round of 32 6-3 6-4.

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Rosie Casals
USA Age 77 Right-Handed 159 cm / 5'3"
H2H including walkovers
6 – 34
40 main-draw results
Billie Jean King
USA Age 82 Right-Handed 164 cm / 5'5"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Billie Jean King 6-3 6-4 Rosie Casals Match data Jun 26, 1983* R32 Wimbledon Grand Slam Grass
Billie Jean King 6-3 7-6 Rosie Casals Match data Sep 11, 1980* R32 Tokyo Sillook WTA 250 Hard
Rosie Casals (w/o) Billie Jean King Match data Mar 26, 1978 RR WTA Finals WTA Finals Carpet
Billie Jean King 4-6 6-4 6-3 Rosie Casals Match data Oct 15, 1977* QF Phoenix WTA 250 Hard
Billie Jean King 6-1 7-6 Rosie Casals Match data Sep 7, 1974* QF US Open Grand Slam Grass
Billie Jean King 6-3 5-7 6-3 Rosie Casals Match data Mar 30, 1974* SF New York WTA 250 Carpet
Billie Jean King 6-1 6-1 Rosie Casals Match data Feb 26, 1974* F Detroit WTA 250 Carpet
Billie Jean King 5-7 6-2 6-0 Rosie Casals Match data Jan 28, 1974 SF Washington Open WTA 250 Carpet
Rosie Casals 7-6(4) 6-1 Billie Jean King Match data Sep 22, 1973* SF Houston WTA 250 Hard
Billie Jean King 6-4 6-3 Rosie Casals Match data Jun 16, 1973* SF Nottingham WTA 250 Grass
Billie Jean King 6-3 7-6(2) Rosie Casals Match data May 14, 1973* SF Tokyo Sillook WTA 250 Carpet
Rosie Casals 7-5 6-4 Billie Jean King Match data May 6, 1973* SF Hilton Head WTA 250 Clay
Billie Jean King 8-4 Rosie Casals Match data Mar 7, 1973* BR Detroit WTA 250 Carpet
Billie Jean King 5-7 6-2 6-4 Rosie Casals Match data Feb 28, 1973* F Indianapolis WTA 250 Carpet
Billie Jean King 6-3 7-6(0) Rosie Casals Match data Oct 2, 1972* SF Phoenix WTA 250 Hard
Billie Jean King 6-2 6-3 Rosie Casals Match data Sep 17, 1972* SF Charlotte WTA 250 Clay
Billie Jean King 6-2 6-4 Rosie Casals Match data Jul 9, 1972* SF Wimbledon Grand Slam Grass
Billie Jean King 6-3 6-2 Rosie Casals Match data Jun 17, 1972* SF Bristol WTA 250 Grass
Billie Jean King 6-7(4) 6-4 7-5 Rosie Casals Match data Jun 5, 1972 RR Nottingham Round Robin WTA 250 Grass
Billie Jean King 6-1 6-2 Rosie Casals Match data Oct 31, 1971* SF Wembley WTA 250 Carpet
Billie Jean King 7-5 6-1 Rosie Casals Match data Oct 4, 1971* F Phoenix WTA 250 Hard
Rosie Casals 6-6(2-0) (def.) Billie Jean King Match data Sep 26, 1971* F Pacific Southwest Championships WTA 500 Hard
Billie Jean King 6-1 4-6 6-3 Rosie Casals Match data Sep 20, 1971* F Louisville WTA 250 Clay
Billie Jean King 6-4 7-6 Rosie Casals Match data Sep 14, 1971* F US Open Grand Slam Grass
Billie Jean King (w/o) Rosie Casals Match data Aug 30, 1971* BR Newport WTA 250 Grass
Billie Jean King 6-3 6-3 Rosie Casals Match data Jul 19, 1971* F West Kirby WTA 250 Grass
Billie Jean King 4-6 7-5 6-1 Rosie Casals Match data Apr 28, 1971* F San Diego WTA 500 Hard
Rosie Casals 6-4 6-4 Billie Jean King Match data Mar 30, 1971* F New York WTA 250 Carpet
Billie Jean King 3-6 6-1 6-2 Rosie Casals Match data Mar 24, 1971* F Rochester WTA 250 Carpet
Billie Jean King 4-6 6-2 6-3 Rosie Casals Match data Mar 4, 1971* F Boston WTA 250 Carpet
Billie Jean King 1-6 7-6(2) 6-4 Rosie Casals Match data Feb 4, 1971* F Oklahoma City WTA 250 Carpet
Billie Jean King 6-3 6-2 Rosie Casals Match data Jan 27, 1971* F Milwaukee WTA 250 Carpet
Billie Jean King 6-1 6-2 Rosie Casals Match data Jan 20, 1971* F Long Beach WTA 250 Carpet
Billie Jean King 6-3 6-4 Rosie Casals Match data Jan 12, 1971* F San Francisco WTA 250 Carpet
Billie Jean King 6-3 6-2 Rosie Casals Match data Mar 27, 1970* SF South African Open WTA 250 Hard
Billie Jean King 6-0 6-4 Rosie Casals Match data Feb 17, 1970* R16 Dallas WTA 250 Carpet
Billie Jean King 4-6 6-3 6-2 Rosie Casals Match data Jul 12, 1969* SF Dublin WTA 250 Grass
Billie Jean King 6-1 6-0 Rosie Casals Match data Jul 6, 1969* SF Wimbledon Grand Slam Grass
Rosie Casals 6-3 5-7 7-5 Billie Jean King Match data Jan 18, 1969* SF Sydney International WTA 500 Grass
Billie Jean King 6-3 9-7 Rosie Casals Match data Feb 26, 1968* F Boston 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 #207 #6 — 2,212 594 322 64.8% 0 0 0 2 10 12
Billie Jean King #22 #2 — 2,437 684 160 81.0% 8 0 0 3 57 68

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 Rosie Casals Billie Jean King
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 1968 36–14 72.0% — 1,750 0 1 — — — — — — —
20 1969 42–19 68.9% — 1,877 0 1 — — — — — — —
21 1970 52–21 71.2% — 2,043 0 4 — — — — — — —
22 1971 92–31 74.8% — 2,172 0 7 — — — — — — —
23 1972 64–26 71.1% — 2,105 0 10 — — — — — — —
24 1973 81–28 74.3% — 2,139 0 12 1968 40–5 88.9% — 1,865 1 1
25 1974 43–16 72.9% — 2,140 0 12 1969 58–14 80.6% — 2,056 1 6
26 1975 20–14 58.8% — 2,004 0 12 1970 47–11 81.0% — 2,180 1 11
27 1976 39–17 69.6% #6 2,127 0 12 1971 114–15 88.4% — 2,302 2 28
28 1977 41–20 67.2% #6 2,054 0 12 1972 89–15 85.6% — 2,378 5 39
29 1978 24–15 61.5% — 2,011 0 12 1973 56–12 82.4% — 2,349 6 46
30 1979 19–26 42.2% — 1,826 0 12 1974 54–8 87.1% — 2,326 7 52
31 1980 14–25 35.9% — 1,677 0 12 1975 23–3 88.5% #4 2,391 8 54
32 1981 12–14 46.2% — 1,685 0 12 1976 2–2 50.0% — 2,336 8 54
33 1982 4–8 33.3% — 1,666 0 12 1977 46–6 88.5% #2 2,398 8 60
34 1983 9–12 42.9% — 1,660 0 12 1978 28–12 70.0% #5 2,336 8 60
35 1984 1–4 20.0% #172 1,608 0 12 1979 36–13 73.5% #5 2,185 8 62
36 1985 1–4 20.0% — 1,573 0 12 1980 39–15 72.2% #6 2,151 8 65
37 1986 0–2 0.0% #207 1,546 0 12 1981 4–5 44.4% — 2,043 8 65
38 — — — — — — — 1982 26–19 57.8% — 1,941 8 66
39 1988 0–2 0.0% — 1,522 0 12 1983 22–5 81.5% — 2,057 8 68
40 1989 0–2 0.0% — 1,499 0 12 — — — — — — —
41 1990 0–1 0.0% — 1,490 0 12 — — — — — — —
42 1991 0–1 0.0% — 1,475 0 12 — — — — — — —

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 Rosie Casals Billie Jean King
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 %
19 1968 9 2 11 81.8% 5 2 7 71.4% 18 8 26 69.2% 4 2 6 66.7% — — — — — — — — — — — — — — — — —
20 1969 4 4 8 50.0% 15 6 21 71.4% 22 7 29 75.9% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
21 1970 8 3 11 72.7% 29 8 37 78.4% 13 6 19 68.4% 2 4 6 33.3% — — — — — — — — — — — — — — — — —
22 1971 14 4 18 77.8% 25 10 35 71.4% 22 8 30 73.3% 31 9 40 77.5% — — — — — — — — — — — — — — — — —
23 1972 16 6 22 72.7% 11 6 17 64.7% 13 6 19 68.4% 24 8 32 75.0% — — — — — — — — — — — — — — — — —
24 1973 18 5 23 78.3% 20 5 25 80.0% 12 4 16 75.0% 31 14 45 68.9% 1968 4 1 5 80.0% 4 1 5 80.0% 26 2 28 92.9% 6 1 7 85.7%
25 1974 6 4 10 60.0% 8 3 11 72.7% 6 2 8 75.0% 23 7 30 76.7% 1969 17 1 18 94.4% 9 5 14 64.3% 26 7 33 78.8% 6 1 7 85.7%
26 1975 2 4 6 33.3% 5 4 9 55.6% 7 2 9 77.8% 6 4 10 60.0% 1970 13 2 15 86.7% 18 5 23 78.3% 8 1 9 88.9% 8 3 11 72.7%
27 1976 4 2 6 66.7% 3 1 4 75.0% 7 2 9 77.8% 25 12 37 67.6% 1971 16 3 19 84.2% 29 5 34 85.3% 28 5 33 84.8% 41 2 43 95.3%
28 1977 14 5 19 73.7% 7 4 11 63.6% 4 1 5 80.0% 16 10 26 61.5% 1972 20 3 23 87.0% 32 6 38 84.2% 22 1 23 95.7% 15 5 20 75.0%
29 1978 5 2 7 71.4% 2 1 3 66.7% 2 2 4 50.0% 15 10 25 60.0% 1973 14 3 17 82.4% 8 3 11 72.7% 12 1 13 92.3% 22 5 27 81.5%
30 1979 4 7 11 36.4% 1 3 4 25.0% 3 3 6 50.0% 11 13 24 45.8% 1974 12 3 15 80.0% 4 1 5 80.0% 9 1 10 90.0% 29 3 32 90.6%
31 1980 3 7 10 30.0% — — — — 4 6 10 40.0% 7 12 19 36.8% 1975 7 2 9 77.8% — — — — 11 1 12 91.7% 5 0 5 100.0%
32 1981 7 4 11 63.6% 0 3 3 0.0% 5 5 10 50.0% 0 2 2 0.0% 1976 2 2 4 50.0% — — — — — — — — — — — —
33 1982 1 3 4 25.0% 0 1 1 0.0% 2 3 5 40.0% 1 1 2 50.0% 1977 20 0 20 100.0% 8 3 11 72.7% 6 2 8 75.0% 12 1 13 92.3%
34 1983 4 5 9 44.4% 1 1 2 50.0% 4 3 7 57.1% 0 3 3 0.0% 1978 4 2 6 66.7% — — — — 8 2 10 80.0% 16 8 24 66.7%
35 1984 1 1 2 50.0% 0 2 2 0.0% 0 1 1 0.0% — — — — 1979 17 3 20 85.0% — — — — 12 5 17 70.6% 7 5 12 58.3%
36 1985 1 3 4 25.0% 0 1 1 0.0% — — — — — — — — 1980 5 1 6 83.3% 3 2 5 60.0% 3 1 4 75.0% 28 11 39 71.8%
37 1986 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — 1981 — — — — 0 1 1 0.0% 0 1 1 0.0% 4 3 7 57.1%
38 — — — — — — — — — — — — — — — — — 1982 0 2 2 0.0% 4 4 8 50.0% 13 4 17 76.5% 9 9 18 50.0%
39 1988 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — 1983 — — — — 1 1 2 50.0% 16 2 18 88.9% 5 2 7 71.4%
40 1989 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
41 1990 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
42 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% — 151 28 179 84.4% 120 37 157 76.4% 200 36 236 84.7% 213 59 272 78.3%

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 Rosie Casals Billie Jean King
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
19 1968 1751 130.0 — — — — +41 -201 -25 68.8% +1.61 7–9 (44%) — — +0.46 — — — — — — — — — — — — — — — —
20 1969 1878 140.7 — — — — -130 -92 +93 64.3% +1.09 12–6 (67%) — — -4.14 — — — — — — — — — — — — — — — —
21 1970 2043 161.0 — — — — -151 +10 +19 68.1% +1.60 11–5 (69%) 1–3 (25%) 104.5 -10.75 — — — — — — — — — — — — — — — —
22 1971 2173 168.5 — — — — +114 -75 -19 71.2% +1.62 18–13 (58%) 6–9 (40%) 96.2 -13.17 — — — — — — — — — — — — — — — —
23 1972 2106 158.7 — — — — +68 -51 +59 66.5% +1.41 15–7 (68%) 9–6 (60%) 102.7 -7.80 — — — — — — — — — — — — — — — —
24 1973 2139 165.9 — — — — +112 -17 +17 71.1% +1.70 15–13 (54%) 8–12 (40%) 96.6 -11.01 1968 1865 141.1 — — — — -83 -273 +141 87.2% +2.72 6–2 (75%) — — +1.76
25 1974 2140 162.3 — — — — +99 +10 +10 69.8% +1.25 6–8 (43%) 5–4 (56%) 96.0 -8.65 1969 2056 154.1 — — — — +176 -365 +42 75.5% +2.11 12–5 (71%) — — -3.94
26 1975 2004 147.2 — — — — +23 +89 +133 59.8% +0.83 5–9 (36%) 3–4 (43%) 89.5 -3.22 1970 2181 166.1 — — — — +139 -229 +41 75.0% +2.11 11–5 (69%) 0–1 — -9.32
27 1976 2127 162.3 — — — — +41 -44 +54 65.5% +1.01 7–4 (64%) 6–3 (67%) 102.3 -7.96 1971 2303 170.6 — — — — +240 -117 +9 84.6% +2.55 20–4 (83%) 16–4 (80%) 116.1 -6.69
28 1977 2055 157.2 — — — — +115 -41 +133 64.5% +0.90 8–6 (57%) 6–5 (55%) 100.5 -6.67 1972 2378 173.1 — — — — +144 -67 +84 82.1% +2.37 13–3 (81%) 8–7 (53%) 102.1 -8.73
29 1978 2011 156.1 — — — — +88 -37 +114 57.0% +0.57 10–7 (59%) 1–5 (17%) 95.9 -4.25 1973 2349 168.6 — — — — +152 -82 +159 82.7% +2.42 8–5 (62%) 9–5 (64%) 100.8 -4.79
30 1979 1826 144.2 — — — — +54 +112 +237 46.6% -0.42 7–10 (41%) 6–2 (75%) 94.5 -3.11 1974 2327 171.4 — — — — +153 -73 +194 81.8% +2.54 10–2 (83%) 3–2 (60%) 104.2 -3.91
31 1980 1678 130.2 — — — — +17 — +237 40.4% -0.67 3–8 (27%) 3–8 (27%) 89.2 -1.94 1975 2391 169.1 — — — — +33 — +109 85.7% +2.70 2–2 (50%) 2–0 — -2.95
32 1981 1685 134.1 — — — — +86 +184 +145 46.0% +0.16 5–6 (45%) 0–4 (0%) 92.6 +0.30 1976 2337 113.7 — — — — +67 — — 50.0% -0.13 — 1–0 — -0.15
33 1982 1666 113.8 — — — — +42 — +126 39.3% -0.75 1–3 (25%) 0–2 — -0.59 1977 2398 164.8 — — — — +140 -140 +131 76.9% +1.69 16–1 (94%) 5–0 (100%) 111.3 -3.92
34 1983 1661 117.2 — — — — -26 — +150 44.9% -0.27 3–4 (43%) 1–0 — -0.27 1978 2337 167.5 — — — — +44 — +160 73.7% +1.86 2–6 (25%) 3–1 (75%) 92.9 -4.22
35 1984 1608 94.3 — — — — — — — 18.2% -2.82 1–0 — — +0.56 1979 2185 156.7 — — — — +75 — +139 71.4% +1.51 8–8 (50%) 9–4 (69%) 94.9 -3.21
36 1985 1573 92.4 — — — — +8 — — 11.1% -2.78 0–1 0–1 — +0.27 1980 2152 165.5 — — — — +100 +122 +192 69.4% +1.09 9–6 (60%) 11–4 (73%) 100.7 -3.21
37 1986 1547 97.2 — — — — — — — 0.0% -3.00 — — — 0.00 1981 2044 121.4 — — — — +105 — — 44.4% -0.67 — — — -0.51
38 — — — — — — — — — — — — — — — — 1982 1941 150.4 — — — — -6 +196 +304 56.2% +0.42 12–7 (63%) 7–5 (58%) 98.0 -2.64
39 1988 1522 93.9 — — — — — — — 0.0% -4.25 — — — 0.00 1983 2057 155.9 — — — — -43 — +231 79.3% +1.93 2–2 (50%) 0–2 — -1.11
40 1989 1499 89.7 — — — — — — — 0.0% -4.50 — — — +0.13 — — — — — — — — — — — — — — — —
41 1990 1491 100.4 — — — — — — — 0.0% -2.50 — — — -0.03 — — — — — — — — — — — — — — — —
42 1991 1476 94.5 — — — — — — — 0.0% -4.50 — — — +0.17 — — — — — — — — — — — — — — — —
Career — 2212 159.2 — — — — +64 -31 +61 62.3% +0.97 134–119 (53%) 55–68 (45%) 91.2 -9.01 — 2437 170.4 — — — — +124 -123 +121 77.5% +2.03 131–58 (69%) 74–35 (68%) 111.2 -6.96

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.