Reigning champion Usain Bolt will be aiming to become the first sprinter ever to clinch a brace of 200 metres titles in what he readily admits is his speciality first choice event.

Shelly-Ann Fraser-Pryce made history when becoming the first Jamaican woman to win the 100m title four years ago, a feat which eluded Juliet Cuthbert and the legendary Merlene Ottey in their 1992 and 1996 appearances.

Usain Bolt faces an enormous challenge when bidding to become the first 100m gold medallist to defend his Olympic title since Carl Lewis's 1984 success on home soil in Los Angeles followed by his victory in Seoul four years later.

30 July 2012 - London, UK - The official ENTRY LIST and comprehensive EVENT PREVIEW STORIES covering the Athletics events of the Games of the XXX Olympiad, London 2012 (Friday 3 to Sunday 12 August 2012), are now available on the IAAF website.