Usain Bolt brushes off Justin Gatlin challenge to reign supreme in 200m final
Usain Bolt beat two-time drug cheat Justin Gatlin to secure the World Championship sprint double.
Four days on from riding to the rescue of his beleaguered sport in the 100 metres, the Jamaican attempted to make it four successive half-lap world crowns.
Gatlin, cast as athletics' number one villain, again stood in his way but once more failed to wrestle away gold as Bolt held strong down the home straight to win with a world-leading 19.55 seconds.
It was another much-needed boost for the sport after the spate of doping allegations that dominated the build-up to the World Championships.
Bolt looked strong from the start of the 200m final, charging out of the blocks and producing a solid bend which he continued to finish 0.19 secs ahead of Gatlin.
Anaso Jobodwana followed home third in a South African record time of 19.87s, pipping Panama's Alonso Edward by just two-thousandths of a second.
Zharnel Hughes finished out of the medals in fifth, but the British sprinter underlined his potential by crossing fifth in a personal best time of 20.02.