During his career, he won 6 top-level singles titles and 30 tour doubles titles, including 7 Grand Slam doubles titles, and a career men's doubles Grand Slam (winning all four titles-the Australian Open, French Open, Wimbledon and the US Open). He reached the World No. 1 doubles ranking in 1991. His career-high singles ranking was World No. 25 in 1988. He was a member of the Australian team which won the Davis Cup in 1986.