Asafa Powell (born 23 November 1982) is a retired Jamaican sprinter who specialised in the 100 metres. He set the 100 metres world record twice, between June 2005 and May 2008 with times of 9.77 and 9.74 seconds. Powell has consistently broken the 10-second barrier in competition, with his personal best of 9.72 s ranking fourth on the all-time list of men's 100-metre athletes. As of 1 September 2016, Powell has broken the ten-second barrier more times than anyone else-97 times.