London 2012 - Jamaican sprint superstar Usain Bolt defends his 100m title at the Olympic Stadium. Despite a sluggish start, he picked up in the middle of the race to power home in an Olympic record of 9.63 - the second-fastest time ever - with Yohan Blake second in a personal best-equalling 9.75. Watch the race in full now.
8/4/2012 5:30:00 PM