Lightning Bolt strikes again with third gold at worlds, China nets silver to delight of home crowdUsain Bolt is perfect yet again. Dispelling two years of injury doubts, the Jamaican won three sprint gold medals this week for an overall world championship record of 11. The last of them came on Saturday when he anchored the 4x100-meter relay team with free-flowing, giant strides that have made him an icon for the sport.