August 11th, 2012 - 09:29 GMT Usain Bolt seals gold medal for Jamaica in Olympics 400m relay Jamaica won the Olympic gold medal in the men's 400-meter relay Saturday with a world record time of 36.84. Read more
August 6th, 2012 - 11:15 GMT London 2012: Usain Bolt clinches Gold in men's 100m with new Olympic record
