The shoe of Usain Bolt of Jamaica is seen untied after winning the men's 100m final of the athletics competition in the National Stadium at the Beijing 2008 Olympic Games August 16, 2008. Bolt won 100 metres gold at the Beijing Olympics in a world record time on Saturday, running 9.69 seconds to claim victory in an exhilarating showdown with his compatriot Asafa Powell. [Agencies]