A quartet of Canada's best medal hopes
Mary Spencer of Wiarton, Ont., is a three-time world champion fighting out of the Windsor Boxing Club as women's boxing makes its Olympic debut.
Tara Whitten of Edmonton is a two-time world champion in omnium cycling.
Paula Findlay of Edmonton dominated women's triathlon in 2011, and was the top-ranked female triathlete in the world.
(Kevin Van Paassen/The Globe and Mail)
Adam van Koeverden of Oakville, Ont., has two Olympic medals and won the 1,000-metre kayak world championship in 2011.