[7][8] Her family later relocated to the Mornington Peninsula,[8] where she started playing golf at the age of thirteen under her parents' influence.

[9] Masters won the inaugural Australian Girls' Amateur in 1953 and the Victorian Junior Championship four years in a row from 1951 to 1954.

[7] In international competition she represented Australia in the Tasman Cup five successive times from 1954 to 1962 and played in the first two Commonwealth Trophy contests in 1959 and 1963.

[16] While playing at a tournament in Florida, Masters escaped uninjured when a sniper fired several shots at her and Marilynn Smith, one of the founders of the LPGA.

[15] Outside of golf, Masters was noted for successfully applying for a green card under the category of individuals with "exceptional ability in sciences or arts who would substantially benefit prospectively the national economy, cultural interest or welfare of the United States".

[16][22] Her petition resulted in the decision in January 1969 – the Matter of Masters – that regarded her as an entertainer in the arts, paving the way for other professional athletes to settle in the US via the same route.