Banking on Bolt-Gatlin showdown

Back at the scene of his 2008 Olympic triumphs, Usain Bolt will square off against controversial American Justin Gatlin in the 100m at the world championships.

Not for the first time, it’s up to sprinting superman Usain Bolt to save the world of track and field.

Having recovered from a leg injury in the nick of time, the Jamaican returns to the scene of his first Olympic triumphs carrying the hopes of a sport desperate to rise above the stench of performance-enhancing drugs.