At the &lt;a href="1984%20Summer%20Paralympics"&gt;1984 New York/Stoke Mandeville Paralympics&lt;/a&gt;, Hammond won three gold medals in the Men's 100 m Breaststroke A8, Men's 100 m Freestyle A8, and Men's 4x100 m Medley Relay A1–A9 events, and three silver medals in the Men's 100 m Butterfly A8, Men's 200 m Individual Medley A8, and Men's 4x100 m Freestyle Relay A1–A9 events. At the 1988 Seoul Paralympics, he won two gold medals in the Men's 100 m Breaststroke A8 and Men's 100 m Freestyle A8 events, and a silver medal in the Men's 4x50 m Freestyle Relay A1–A8 event. During his swimming career, he was coached by Peter Ryan and Harry Gallagher.