Bolt indeciso com planos de aposentadoria

Jamaican sprinter Usain Bolt attends a press conference in London on July 23, 2015, ahead of this week's IAAF Diamond League London event. Bolt returns to action after a six-week injury-enforced break in the 100 metres on the opening night of the London Diamond League meeting on Friday with question marks hanging over both his fitness and form just four weeks out from the World Championships in Beijing. AFP PHOTO / NIKLAS HALLE'N