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

BEIJING, CHINA - AUGUST 25: David Lekuta Rudisha of Kenya leads the pack during the Men's 800 metres final during day four of the 15th IAAF World Athletics Championships Beijing 2015 at Beijing National Stadium on August 25, 2015 in Beijing, China. (Photo by Alexander Hassenstein/Getty Images for IAAF)

Getty Images Sport Alexander Hassenstein