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

Rosie Casals vs Janet Newberry H2H: 9-0

Rosie Casals holds a 9–0 lead over Janet Newberry in their WTA head-to-head. Across 9 main-draw meetings, Rosie Casals leads 6–0 on carpet and 2–0 on hard courts. Most recently, Rosie Casals won the 1978 Chicago round of 16 6-3 6-0.

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

Rosie Casals
USA Age 77 Right-Handed 159 cm / 5'3"
H2H
9 – 0
9 main-draw meetings
Janet Newberry
USA Age 73 Right-Handed 170 cm / 5'7"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Rosie Casals 6-3 6-0 Janet Newberry Match data Feb 3, 1978* R16 Chicago WTA 250 Carpet
Rosie Casals 6-3 6-2 Janet Newberry Match data Sep 20, 1974* R16 Orlando WTA 250 Clay
Rosie Casals 6-7 6-2 6-4 Janet Newberry Match data Feb 28, 1974* R32 Chicago WTA 250 Carpet
Rosie Casals 6-3 6-3 Janet Newberry Match data Aug 18, 1973* QF Jersey Shore WTA 250 Carpet
Rosie Casals 3-6 6-1 6-1 Janet Newberry Match data Apr 8, 1973* QF Philadelphia WTA 250 Carpet
Rosie Casals 6-2 5-7 6-1 Janet Newberry Match data Apr 2, 1973* QF Tucson WTA 250 Hard
Rosie Casals 6-2 6-3 Janet Newberry Match data Mar 13, 1973* QF Chicago WTA 250 Carpet
Rosie Casals 6-2 7-5 Janet Newberry Match data Feb 10, 1973* R16 Miami Open WTA 250 Hard
Rosie Casals 6-1 6-3 Janet Newberry Match data Feb 4, 1973* BR Bethesda 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
Janet Newberry — — — 1,922 238 187 56.0% 0 0 0 1 7 8

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 Janet Newberry
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
14 — — — — — — — 1968 7–5 58.3% — 1,542 0 0
15 — — — — — — — 1969 13–6 68.4% — 1,631 0 2
16 — — — — — — — 1970 20–7 74.1% — 1,718 0 5
17 — — — — — — — 1971 15–9 62.5% — 1,757 0 5
18 — — — — — — — 1972 20–17 54.1% — 1,707 0 5
19 1968 36–14 72.0% — 1,750 0 1 1973 32–24 57.1% — 1,851 0 5
20 1969 42–19 68.9% — 1,877 0 1 1974 22–22 50.0% — 1,812 0 5
21 1970 52–21 71.2% — 2,043 0 4 1975 31–22 58.5% — 1,903 0 6
22 1971 92–31 74.8% — 2,172 0 7 1976 14–10 58.3% — 1,862 0 6
23 1972 64–26 71.1% — 2,105 0 10 1977 25–22 53.2% — 1,875 0 7
24 1973 81–28 74.3% — 2,139 0 12 1978 15–14 51.7% — 1,831 0 7
25 1974 43–16 72.9% — 2,140 0 12 1979 12–21 36.4% — 1,680 0 7
26 1975 20–14 58.8% — 2,004 0 12 1980 12–8 60.0% — 1,643 0 8
27 1976 39–17 69.6% #6 2,127 0 12 — — — — — — —
28 1977 41–20 67.2% #6 2,054 0 12 — — — — — — —
29 1978 24–15 61.5% — 2,011 0 12 — — — — — — —
30 1979 19–26 42.2% — 1,826 0 12 — — — — — — —
31 1980 14–25 35.9% — 1,677 0 12 — — — — — — —
32 1981 12–14 46.2% — 1,685 0 12 — — — — — — —
33 1982 4–8 33.3% — 1,666 0 12 — — — — — — —
34 1983 9–12 42.9% — 1,660 0 12 — — — — — — —
35 1984 1–4 20.0% #172 1,608 0 12 — — — — — — —
36 1985 1–4 20.0% — 1,573 0 12 — — — — — — —
37 1986 0–2 0.0% #207 1,546 0 12 — — — — — — —
39 1988 0–2 0.0% — 1,522 0 12 — — — — — — —
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 Janet Newberry
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 %
14 — — — — — — — — — — — — — — — — — 1968 7 5 12 58.3% — — — — — — — — — — — —
15 — — — — — — — — — — — — — — — — — 1969 12 4 16 75.0% — — — — 1 2 3 33.3% — — — —
16 — — — — — — — — — — — — — — — — — 1970 15 3 18 83.3% 2 1 3 66.7% 3 3 6 50.0% — — — —
17 — — — — — — — — — — — — — — — — — 1971 2 2 4 50.0% 1 1 2 50.0% 12 6 18 66.7% — — — —
18 — — — — — — — — — — — — — — — — — 1972 6 4 10 60.0% 6 6 12 50.0% 6 6 12 50.0% — — — —
19 1968 9 2 11 81.8% 5 2 7 71.4% 18 8 26 69.2% 4 2 6 66.7% 1973 6 5 11 54.5% 10 5 15 66.7% 8 5 13 61.5% 8 9 17 47.1%
20 1969 4 4 8 50.0% 15 6 21 71.4% 22 7 29 75.9% 1 2 3 33.3% 1974 4 5 9 44.4% 1 4 5 20.0% 8 4 12 66.7% 9 9 18 50.0%
21 1970 8 3 11 72.7% 29 8 37 78.4% 13 6 19 68.4% 2 4 6 33.3% 1975 7 5 12 58.3% 20 9 29 69.0% 3 2 5 60.0% 1 6 7 14.3%
22 1971 14 4 18 77.8% 25 10 35 71.4% 22 8 30 73.3% 31 9 40 77.5% 1976 1 2 3 33.3% 9 4 13 69.2% 2 2 4 50.0% 2 2 4 50.0%
23 1972 16 6 22 72.7% 11 6 17 64.7% 13 6 19 68.4% 24 8 32 75.0% 1977 4 4 8 50.0% 13 7 20 65.0% 3 3 6 50.0% 5 8 13 38.5%
24 1973 18 5 23 78.3% 20 5 25 80.0% 12 4 16 75.0% 31 14 45 68.9% 1978 1 2 3 33.3% 7 5 12 58.3% 5 3 8 62.5% 2 4 6 33.3%
25 1974 6 4 10 60.0% 8 3 11 72.7% 6 2 8 75.0% 23 7 30 76.7% 1979 2 4 6 33.3% 2 5 7 28.6% 5 5 10 50.0% 1 5 6 16.7%
26 1975 2 4 6 33.3% 5 4 9 55.6% 7 2 9 77.8% 6 4 10 60.0% 1980 6 5 11 54.5% 1 1 2 50.0% 4 0 4 100.0% — — — —
27 1976 4 2 6 66.7% 3 1 4 75.0% 7 2 9 77.8% 25 12 37 67.6% — — — — — — — — — — — — — — — — —
28 1977 14 5 19 73.7% 7 4 11 63.6% 4 1 5 80.0% 16 10 26 61.5% — — — — — — — — — — — — — — — — —
29 1978 5 2 7 71.4% 2 1 3 66.7% 2 2 4 50.0% 15 10 25 60.0% — — — — — — — — — — — — — — — — —
30 1979 4 7 11 36.4% 1 3 4 25.0% 3 3 6 50.0% 11 13 24 45.8% — — — — — — — — — — — — — — — — —
31 1980 3 7 10 30.0% — — — — 4 6 10 40.0% 7 12 19 36.8% — — — — — — — — — — — — — — — — —
32 1981 7 4 11 63.6% 0 3 3 0.0% 5 5 10 50.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
33 1982 1 3 4 25.0% 0 1 1 0.0% 2 3 5 40.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
34 1983 4 5 9 44.4% 1 1 2 50.0% 4 3 7 57.1% 0 3 3 0.0% — — — — — — — — — — — — — — — — —
35 1984 1 1 2 50.0% 0 2 2 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
36 1985 1 3 4 25.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
37 1986 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
39 1988 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
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% — 73 50 123 59.3% 72 48 120 60.0% 60 41 101 59.4% 28 43 71 39.4%

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 Rosie Casals Janet Newberry
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
14 — — — — — — — — — — — — — — — — 1968 1542 104.3 — — — — +45 — — 55.6% +0.41 2–1 (67%) — — +0.69
15 — — — — — — — — — — — — — — — — 1969 1632 120.1 — — — — +106 — -86 67.4% +1.19 2–3 (40%) — — +1.11
16 — — — — — — — — — — — — — — — — 1970 1719 128.8 — — — — +177 -163 -147 70.0% +1.70 4–4 (50%) 0–1 — +3.95
17 — — — — — — — — — — — — — — — — 1971 1758 132.0 — — — — +111 — -30 56.9% +0.65 4–1 (80%) — — +0.89
18 — — — — — — — — — — — — — — — — 1972 1707 131.6 — — — — +164 -98 -1 54.3% +0.39 5–4 (56%) 0–2 — -0.95
19 1968 1751 130.0 — — — — +41 -201 -25 68.8% +1.61 7–9 (44%) — — +0.46 1973 1852 140.9 — — — — -29 -44 -119 55.8% +0.08 11–8 (58%) 7–1 (88%) 106.5 -4.59
20 1969 1878 140.7 — — — — -130 -92 +93 64.3% +1.09 12–6 (67%) — — -4.14 1974 1813 140.5 — — — — -4 -63 -20 50.5% +0.13 4–5 (44%) 5–5 (50%) 99.4 -2.47
21 1970 2043 161.0 — — — — -151 +10 +19 68.1% +1.60 11–5 (69%) 1–3 (25%) 104.5 -10.75 1975 1904 152.7 — — — — -63 +15 -117 57.6% +0.47 6–6 (50%) 6–1 (86%) 104.5 -5.60
22 1971 2173 168.5 — — — — +114 -75 -19 71.2% +1.62 18–13 (58%) 6–9 (40%) 96.2 -13.17 1976 1863 123.7 — — — — -83 +57 -40 51.8% -0.23 7–1 (88%) 3–1 (75%) 107.1 -1.77
23 1972 2106 158.7 — — — — +68 -51 +59 66.5% +1.41 15–7 (68%) 9–6 (60%) 102.7 -7.80 1977 1875 146.0 — — — — -74 +55 -101 52.8% +0.28 6–6 (50%) 2–5 (29%) 95.9 -3.22
24 1973 2139 165.9 — — — — +112 -17 +17 71.1% +1.70 15–13 (54%) 8–12 (40%) 96.6 -11.01 1978 1831 138.7 — — — — -69 +30 +11 50.7% +0.12 5–4 (56%) 0–4 (0%) 95.6 -2.30
25 1974 2140 162.3 — — — — +99 +10 +10 69.8% +1.25 6–8 (43%) 5–4 (56%) 96.0 -8.65 1979 1681 129.3 — — — — +2 +125 +112 39.1% -0.90 2–3 (40%) 4–4 (50%) 97.3 +0.41
26 1975 2004 147.2 — — — — +23 +89 +133 59.8% +0.83 5–9 (36%) 3–4 (43%) 89.5 -3.22 1980 1644 112.8 — — — — -10 — +207 60.0% +0.76 4–3 (57%) 1–1 — +2.97
27 1976 2127 162.3 — — — — +41 -44 +54 65.5% +1.01 7–4 (64%) 6–3 (67%) 102.3 -7.96 — — — — — — — — — — — — — — — —
28 1977 2055 157.2 — — — — +115 -41 +133 64.5% +0.90 8–6 (57%) 6–5 (55%) 100.5 -6.67 — — — — — — — — — — — — — — — —
29 1978 2011 156.1 — — — — +88 -37 +114 57.0% +0.57 10–7 (59%) 1–5 (17%) 95.9 -4.25 — — — — — — — — — — — — — — — —
30 1979 1826 144.2 — — — — +54 +112 +237 46.6% -0.42 7–10 (41%) 6–2 (75%) 94.5 -3.11 — — — — — — — — — — — — — — — —
31 1980 1678 130.2 — — — — +17 — +237 40.4% -0.67 3–8 (27%) 3–8 (27%) 89.2 -1.94 — — — — — — — — — — — — — — — —
32 1981 1685 134.1 — — — — +86 +184 +145 46.0% +0.16 5–6 (45%) 0–4 (0%) 92.6 +0.30 — — — — — — — — — — — — — — — —
33 1982 1666 113.8 — — — — +42 — +126 39.3% -0.75 1–3 (25%) 0–2 — -0.59 — — — — — — — — — — — — — — — —
34 1983 1661 117.2 — — — — -26 — +150 44.9% -0.27 3–4 (43%) 1–0 — -0.27 — — — — — — — — — — — — — — — —
35 1984 1608 94.3 — — — — — — — 18.2% -2.82 1–0 — — +0.56 — — — — — — — — — — — — — — — —
36 1985 1573 92.4 — — — — +8 — — 11.1% -2.78 0–1 0–1 — +0.27 — — — — — — — — — — — — — — — —
37 1986 1547 97.2 — — — — — — — 0.0% -3.00 — — — 0.00 — — — — — — — — — — — — — — — —
39 1988 1522 93.9 — — — — — — — 0.0% -4.25 — — — 0.00 — — — — — — — — — — — — — — — —
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 — 1922 142.9 — — — — +13 +8 -28 54.9% +0.32 62–49 (56%) 28–25 (53%) 101.7 -2.59

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.