Jamaican Usain Bolt trumped American rival Justin Gatlin to retain his world 100m title on Sunday.

Bolt, also the double Olympic gold medallist and world record holder in the blue riband event, ran a season’s best of 9.79 seconds.

Gatlin, who has served two doping bans, was just one-hundredth of a second off Bolt, taking silver in 9.80sec with fellow American Trayvon Bromell rounding out the podium, taking bronze in 9.92sec.