US athlete Paul Kipkemoi Chelimo (back-L) falls behind (front L-R) Kenya's Cyrus Rutto, Canada's Mohammed Ahmed, Bahrain's Birhanu Balew and Ethiopia's Selemon Barega as they compete in the men's 5000m athletics event at the 2017 IAAF World Championships at the London Stadium in London on August 9, 2017. (Photo by Glyn KIRK / AFP) (Photo by GLYN KIRK/AFP via Getty Images)