Jamaican Usain Bolt added the world crown to his Olympic title as he scorched to victory in a world record 9.58 seconds in the men's 100m final at the World Athletics Championships on Sunday.

Billed as the first of three potential Berlin duels between Bolt and American reigning world champion Tyson Gay, the 22-year-old show-boating Jamaican crushed the field and smashed his own record of 9.69sec set in simiarly spectacular fashion at the Beijing Olympics final.