Jamaican sprinter Usain Bolt defended his title as the world's fastest man Sunday, grabbing gold in the men's 100-meter race by setting an Olympic record with a time of 9.63. Yohan Blake, also of Jamaica, took the silver medal while Justin Gatlin of the United States won bronze. The American sprinter set a personal best … Continue reading U.S. sprinter Justin Gatlin discusses record-setting 100-meter race