Usain Bolt,the greatest runner,retires from the athletics world on 13 August2017.He injured himself during his last race in London.While running his got cramps on his left hamstring but he tried hard to chase down his rivals.His journey ended in pain.

Bolt could only manage bronze in his penultimate race – the men’s 100m – before pulling up injured just as he began to hit top speed in his final event, the 4x100m relay

Usain Bolt said he was “saying goodbye to everything” and “almost cried” as his successful career came to a close at the World Championships in London.