Asafa Powell, Jamaican sprinter
Asafa Powell, CD (born 23 November 1982) is a Jamaican sprinter who specialises 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. He currently holds the world record for the 100-yard dash with a time of 9.09 s, set on 27 May 2010 in Ostrava, Czech Republic. At the 2016 Rio Olympic Games, he won a gold medal in the 4 x 100 metres relay.

Powell competed in the 100 m at the 2004, 2008 and 2012 Olympics, finishing fifth in 2004 and 2008 and eighth after injuring his groin during the race in 2012. At the 2007 Osaka World Championships, he won a bronze and a silver medal in the 100 m and 4 x 100 m relay respectively, and he was successful at the Commonwealth Games, winning two golds and one silver medal. At the 2009 World Championships, he won the 100 m bronze and relay gold. Powell has won five times at the IAAF World Athletics Final and was the former 100 m world record holder in the event.

In 2013, Powell tested positive for the stimulant oxilofrine along with teammate Sherone Simpson and voluntarily withdrew from the 2013 World Athletics Championships as a result, though both maintained they did not take any banned supplements knowingly or willfully. On 10 April 2014, they received an 18-month suspension from competing, which was set to expire in December that year. However the Court of Arbitration for Sport (CAS) lifted both athletes' suspensions on 14 July 2014, finding that the positive tests were caused by the presence of oxilofrine, undisclosed by the manufacturer, in a supplement taken by the pair.