15th IAAF World Athletics Championships Beijing 2015 - Day Six [Getty Images]

BEIJING, CHINA - AUGUST 27: (L-R) Silver medalist Lashawn Merritt of the United States, gold medalist Wayde Van Niekerk of South Africa and bronze medalist Kirani James of Grenada pose on the podium during the medal ceremony for the Men's 400 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 Alexander Hassenstein/Getty Images for IAAF)

Getty Images Sport Alexander Hassenstein