Usain Bolt of Jamaica and James Dasaolu of Great Britain compete in the Men's 100m Round 1 Heats on Day 8 of the London 2012 Olympic Games at Olympic Stadium on August 4, 2012 in London, England. (Photo by Michael Steele/Getty Images)
James Dasaolu of Great Britain and Northern Ireland crosses the line to win gold next to Lucas Jakubczyk of Germany in the Men's 100 metres final during day two of the 22nd European Athletics Championships at Stadium Letzigrund on August 13, 2014 in Zurich, Switzerland. (Photo by Ian Walton/Getty Images)
Usain Bolt Photos - James Dasaolu of Great Britain and Usain Bolt of Jamaica prepare to compete in round one of the Men's 100 Meters on Day 8 of the Rio 2016 Olympic Games at the Olympic Stadium on August 13, 2016 in Rio de Janeiro, Brazil. - Athletics - Olympics: Day 8
(L-R) Mike Rodgers of the United States, Nesta Carter of Jamaica, Kemar Bailey-Cole of Jamaica, Usain Bolt of Jamaica, Justin Gatlin of the United States, Nickel Ashmeade of Jamaica, Christophe Lemaitre of France and James Dasaolu of Great Britain at the start of the Men's 100 metres Final competes in the Men's 100 metres Final during Day Two of the 14th IAAF World Athletics Championships Moscow 2013 at Luzhniki Stadium on August 11, 2013 in Moscow, Russia.