Usain Bolt again delivered when it mattered as he scorched to the fastest time of 2015 to win a record fourth straight world 200m title in 19.55 seconds and sweep the individual sprints at a global championships for a fifth time. 

Usain Bolt blew away any fears about his fitness and fired a major warning to Justin Gatlin as he blasted to his fastest 100 metres of the year on his return to London’s Olympic Stadium last night.