Usain Bolt crumpled on the track with a left leg injury as he was chasing gold in the 4×100-meter relay at the world championships. Instead, Britain upset the United States to take gold in 37.47 seconds. The Americans were .05 seconds behind. Japan took bronze in 38.04. According to the Jamaican team doctor, Kevin Jones, Bolt had … Continue reading Jamaica Team Doctor Gives Update On Usain Bolt