Monaco: Justin Gatlin (33) heads off for three weeks of rest and recuperation knowing he is the circuit's No 1 sprinter and vowing to come back 'blazing' at next month's world championships in Beijing.


USA's Justin Gatlin takes a selfie with fans after winning the 100m gold at the IAAF Diamond League meet in Monaco on Saturday. Pic/AFP 

The American is now unbeaten since August 2013 and with doubts over Jamaican Usain Bolt's fitness after a pelvic problem, Gatlin has been installed as firm favourite to star in the Chinese capital.