Margaret Court is 60–3 in Australia in singles, as follows:
- 1959: 32-player draw. Aged 16, she loses in R2 to eventual champ Reitano. (Win–loss record of 1–1)
- 1960: 32-player draw. Beats top seed, Wimbledon champ, and future Hall-of-Famer Maria Bueno in QF, then avenges her previous defeat by knocking out defending champ Reitano in SF. Wins her first title aged 17. (6–1)
- 1961: 44-player draw of Australians. Retains title. (11–1)
- 1962: 48-player draw of mostly Australians. Retains title. (16–1)
- 1963: 39-player draw of mostly Australians. Retains title. (21–1)
- 1964: 27-player draw of mostly Australians. Retains title. (25–1)
- 1965. 52-player international draw. She beats future Hall-of-Famers Durr in QF, Billie Jean Moffit in SF, and Bueno in the final to retain title. (30–1)
- 1966: 48-player draw of mostly Australians. Retains title. (35–1)
- 1967: Retired, dnp
- 1968: 62-player international draw. Fifth tournament back after coming out of retirement in November '67. Beats young future Hall-of-Famer Goolagong in R3, and third seeded future Hall-of-Famer Rosie Casals in QF, loses to Billie Jean King in the final. Win streak at the event ends at 38. (39–2)
- 1969: 32-player international draw. BJK was playing well enough to beat young Goolagong, former Wimbledon champ Krantzcke, and future Hall-of-Famer Ann Jones in succession, but Court still routs her in the final to avenge the previous year and regain the title. (44–2)
- 1970: 43-player draw of mostly Australians. Beats Goolagong and Krantzcke. Retains title. (49–2)
- 1971: 30-player draw of mostly Australians. Beats Goolangong in the final. Retains title. (53–2)
- 1972: Pregnant, dnp.
- 1973: 48-player international field. Beats Krantzcke and Goolagong. Regains title. (58–2)
- 1974: Pregnant again, dnp
- 1975: 56-player international draw. Beats Turnbull but loses in QF to future Hall-of-Famer Navratilova. (60–3)
Overall Court is 2–1 vs BJK, 5–0 vs Goolagong, 2–0 vs Bueno, and a combined 10–2 versus all Hall-of-Fame inductees. Martina is the only player who she has lost to (when aged 32 and a mother-of-two) where she did not later avenge her defeat. Her three losses were to the eventual champion (2x) and the eventual runner-up (1x).
You could make every Aussie event a 128-player draw with all the top woman in the 1960s present, and Court is still winning the majority of them.
Court has 62 major titles in singles, doubles, and mixed. If you take away every Australian title she won (21), she's left with 41. That
still keeps her #2 on the all-time list, behind only Martina and ahead of both Serena and BJK.
She played all four slams in eight of the eleven seasons where she was the Aussie champ, and won at least one other major in seven of them.
Only three women in all of history have a Boxed Set (career slam in singles/doubles/mixed). Doris Hart — who likely benefited from the enforced absences of Pauline Betz, Mo Connolly, and Althea Gibson in the 1950s — was the first. Martina Navratilova also did it, although it took until 2004 to complete hers. Court did it once in the amateur era (at Wimbledon '64, aged 22), and then completed a second one purely within the Open Era as well. She also completed the career slam in singles at Wimbledon '63, just before she turned 21.
Winners of the most slams (all disciplines) in a single season:
- Nine..... Court (1965)
- Eight..... Budge (1938), Sedgman (1951), Sedgman (1952), Court (1963), Court (1969)
- Seven..... Hart (1951), Hart (1952), Court (1964), King (1967), Court (1970), Navratilova (1984), Navratilova (1985)
Edit: She also shares the record for the most Triple Crowns (singles/doubles/mixed at the same slam) with Lenglen — they have five each — and is the outright holder of the Open Era record, being the only player to have done it twice.
Hope this helps.