As a junior player Fox was a singles runner-up to Mima Jaušovec at the 1973 Orange Bowl.

Her best result was reaching the doubles final at the 1977 French Open with Helen Cawley in which they were defeated in three sets by Regina Maršíková and Pam Teeguarden.

Her best result in singles occurred in 1977 when she reached the quarterfinals at the Australian Open in which she lost to second-seeded Sue Barker.

[4] Fox became the singles champion at the Tasmanian Open in January 1977, defeating Lesley Bowrey in the final in three sets.

[5][2][1] Fox played in the World Team Tennis competition in 1975 (Pittsburgh Triangles), 1976 (Cleveland Nets) and 1978 (Phoenix Racquets).