During his 15-year international wheelchair tennis career, David reached a career-high singles ranking of No.6 (June 2000) and No.2 in doubles (July 2000).
At the Super Series events, his best singles results were semifinal appearances at the Australian and French Opens and the quarterfinals at the British and US Opens.
David formed an enormously successful doubles partnership with fellow Australian David Hall.
Together they won silver at the Sydney 2000 Paralympics and secured the title of champion nation at the 2000 World Team Cup.
The pairing also reaped them six Super Series doubles titles (Australian Open 1998, 2000, 2001; French Open 2000; British Open 1998, 2000) and they made two more finals appearances at the British Open and US Open.