He won the silver medal at the 2004 Athens Olympics and the bronze medal at the 2008 Beijing Olympics .
In January , the two - time Olympic medalist from New Zealand announced on his website that he was officially retiring from the sport .
medalist won the silver medal at the 2004 Athens Olympics and the bronze medal at the 2008 Beijing Olympics .
In January , the two - time Olympic medalist from New Zealand announced on his website that he was officially retiring from the sport .