Jamaican Usain Bolt hardly had to break sweat as he coasted into the mens 200 metres final where he will bid for an unprecedented Olympic sprint double double. 25 year old Bolt, will be joined in today s gold medal showdown by compatriots Warren Weir and his most likely title rival Yohan Blake, as well as United States one representative Wallace Spearmon. Victory in today s final would make him unquestionably the sports greatest ever sprinter.