Injured Bolt fails to finish final race as GB take shock relay gold
There was a hugely dramatic end to Usain Bolt's final race as the iconic sprinter pulled up injured in a 4x100m relay won by Great Britain.
Usain Bolt's illustrious athletics career finished on a painful and shocking note at the IAAF World Championships, the iconic sprinter pulling up with an injury as Great Britain claimed a shock gold in the men's 4x100m relay.