Masur began tennis at the age of eight and was educated at the Australian Institute of Sport as an adolescent . In 1981, at the age of 18, he won the junior doubles competition at the Australian Open alongside his compatriot Craig Miller . In the same year he became national Australian junior champion and 1982 professional tennis player. In his career he won three ATP tournaments in singles and 16 doubles titles. He won his individual title at the ATP tournament in Hong Kong in 1983 , in Adelaide in 1987 and in Newport in 1988 . In doubles he was victorious alongside several players. His partners included Petr Korda , Pat Cash and Emilio Sánchez . He reached his highest world rankings in 1993 with 8th place in doubles and 15th in singles.
Masur played 30 singles and two doubles games for the Australian Davis Cup team between 1985 and 1993 ; his Davis Cup balance shows 17:15 wins. He competed for Australia in singles in the Olympic Games in 1988 and 1992 . In 1988 he reached the second round with a win over Luiz Mattar , in which he was defeated by Carl-Uwe Steeb , in 1992 he failed in the first round to Pete Sampras .