He represented his country at two Olympic Games , in 2000 and 2004 , reaching the semifinals on the first occasion .
Casey Garnett Vincent ( born 17 March 1979 in Boronia , Victoria ) is a retired Australian sprinter who specialised in the 400 metres .
Casey Garnett Vincent represented Casey Garnett Vincent 's country at two Olympic Games , in 2000 and 2004 , reaching the semifinals on the first occasion .
Casey Garnett Vincent ( born 17 March 1979 in Boronia , Victoria ) is a retired Australian sprinter who specialised in the 400 metres .