Bolt gets set for 'triple triple' farewell

Usain Bolt will aim to sign off with the ultimate final flourish by sealing an unprecedented 'triple triple' on his Olympic farewell in Rio on Friday. The sprint sensation will bow out of the Olympics, an arena he has made his own, with all eyes on whether Jamaica can deliver the 4x100m relay title. Victory would ensure Bolt finishes with the 100m, 200m and 4x100m sweep in three consecutive Olympics, a goal that heaps pressure on the Jamaican team.