 In 2009 , at age 23 , Usain Bolt became the youngest member so far , of the Order of Jamaica . The award was ' for outstanding performance in the field of athletics at the international level ' . In the Jamaican honours system , this is considered the equivalent of a knighthood in the British honours system , and entitles him to be formally styled " The Honourable " , and to use the post nominal letters OJ . 
