2000 Summer Paralympics: Competed in the T46 100 metres and F46 long jump as well as winning a bronze medal in the F46 high jump.
2004 Summer Paralympics, Athens: Competed in the T46 200m, F46 long jump and F44/46 high jump but did not win any medals.
2008 Summer Paralympics: Won a silver medal in the F46 long jump and competed in the T46 100 and 200 metres and the F44/46 high jump.[2]
In addition to his Paralympic achievements, Raos won a gold medal at the 2011 IPC World Championships as part of the South African team for the Men's 4 x 100 metres relay.
References
^"David Roos", whoswho.co.za, retrieved 7 September 2012
^"David Roos", paralympic.org, retrieved 7 September 2012