Bolt wins 4x100m heats in his career's penultimate race
Sprinter Usain Bolt, running in the penultimate race of his career, led Jamaica to the finals of the 4x100 metres relay at the World Championships on Saturday in London. Jamaica won the semi-final heats in 37.95 seconds, ahead of France (38.03) and China (38.20). Usain Bolt had won the bronze medal in his career's last 100-metre race on August 5.