Usain St. Leo Bolt is a Jamaican retired sprinter. Widely regarded as the greatest sprinter of all time, he is an eight-time Olympic gold medalist and the world record holder in the 100 metres, 200 metres, and 4 × 100 metres relay. Usain Bolt (Jamaica) set the men's 100 m world record of 9.58 in Berlin, Germany on August 16, 2009. It is the world record today. Wiki link