16th IAAF World Athletics Championships London 2017 - Day Two

A detailed view as Boniface Ontuga Mweresa of Kenya competes in the Men's 400 metres 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.
(Aug. 4, 2017 - Source: Alexander Hassenstein/Getty Images Europe)