Won five Grand Slam singles titles — the Australian Championships in 1949 and 1950, Wimbledon in 1952 and the US Championships in 1951 and 1952 — among 22 major titles across singles, doubles and mixed. With Ken McGregor he formed the only men's doubles pair to complete the Grand Slam in a calendar year, in 1951, and he was particularly known for his volleying and his speed at the net. After retiring he commentated for Australian broadcasters and directed Tennis Camps of Australia.