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BEIJING, CHINA - AUGUST 27: Usain Bolt of Jamaica crosses the finish line to win gold ahead of Justin Gatlin (2nd R) of the United States in the Men's 200 metres final during day six of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 27, 2015 in Beijing, China. (Photo by Patrick Smith/Getty Images)

BEIJING, CHINA - AUGUST 27:  Usain Bolt of Jamaica crosses the finish line to win gold ahead of Justin Gatlin (2nd R) of the United States in the Men's 200 metres final during day six of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 27, 2015 in Beijing, China.  (Photo by Patrick Smith/Getty Images)