 In the 1988 Seoul Games, Wallrodt won two gold medals in the Men's Shot Put 2 and the Men's Javelin 2 events, and a bronze medal in the Men's Discus 2 event.At the 1990 World Championships and Games for the Disabled in Assen, Netherlands he won gold medals in the Men's Shot Put and Discus F4 events.At the 1992 Barcelona Games, he won a gold medal in the Men's Javelin THW4 event (for which he received a Medal of The Order of Australia), and two silver medals in the Men's Discus THW4 and the Men's Shot Put THW4 events.