Jamaica's Usain Bolt easily outstripped American rival Justin Gatlin on Thursday to claim his fourth consecutive world 200 metre title. Bolt clocked a world-leading 19.55 seconds to beat Gatlin by nearly two-tenths, thumbing his chest as he crossed the line to add the 200 metres title to his 100 metre title at the world championships in Beijing. The clear victory extends Bolt's domination of sprinting which stretches back to when he took the world by storm at the 2008 Beijing Olympics, also at the Bird's Nest stadium. Gatlin, who has served two doping bans and finished just one-hundredth of a second behind Bolt in Sunday's 100 metre, clocked 19.74 seconds, with South African Anaso Jobodwana taking bronze with a national record of 19.87seconds. The victory meant Bolt has now remarkably won 11 of the last 12 individual Olympic and world sprint titles dating back to Beijing 2008. His only blip came after a false start in the 100 metres at the 2011 worlds in Daegu.