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

BEIJING, CHINA - AUGUST 24: Rusheen McDonald of Jamaica competes in the Men's 400 metres Semi Final during day three of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 24, 2015 in Beijing, China. (Photo by Christian Petersen/Getty Images for IAAF)

Getty Images Sport Christian Petersen