The best race: Beijing 2015
Bolt regained his title in Moscow 2013 with a 9.77 victory but went into Beijing 2015 without being the obvious favourite.
Former Olympic and world champion Justin Gatlin, who had been second in Moscow, had been unbeaten for over a year.
He had won Diamond Leagues in Doha, Rome, Lausanne and Monaco, all between 9.74 and 9.78.
The American remained the favourite in Beijing as he won his heat in a windassisted 9.80, then won his semi-final in an impressive 9.77.
Bolt struggled in comparison with a laboured 9.96 in his semi.
Because of Gatlin’s drugs bans, much of the media were building the race up as a ‘good versus evil’ contest.
In the final, Bolt had the marginally quicker reaction but Gatlin edged ahead. There was little in it at halfway and between 50m and 75m Gatlin was moving the faster, opening up a clear lead, but Bolt was within striking distance.
The race still seemed the American’s as they hit the last 10 metres but as he neared the finish, Gatlin tightened up and Bolt edged by to the get the verdict by 0.013 of a second.
The Jamaican’s 9.79 (9.784) gave him a record ninth world gold medal from Gatlin (9.797).
Usain Bolt films Justin Gatlin on the podiumafter their memorable contest in 2015