DOHA - QATAR OCT 4: Ronald Musagala (UGA), Matthew Centrowitz (USA), Josh Kerr and Jake Wightman (GB&NI), Marcin Lewandowski (POL), Ronald Kwemoi (KEN) competing in the 1500m semi final on Day 8 of the 17th IAAF World Athletics Championships 2019, Kalifa International Stadium, Doha, Qatar on the 4th October 2019.