LONDON, ENGLAND - AUGUST 05:  Pierre-Ambroise Bosse of France, Adam Kszczot of Poland and Nijel Amos of Botswana compete during the mens 800m heats during day two of the 16th IAAF World Athletics Championships London 2017 at The London Stadium on August 5, 2017 in London, United Kingdom.  (Photo by Alexander Hassenstein/Getty Images for IAAF)