Usain Bolt has posted medical proof to silence doubters who questioned whether he was genuinely injured during last Saturday's 4x100m relay final in London.
The 30-year-old sprint legend pulled up during the anchor leg as Jamaica were bidding for gold at the IAAF World Championships.
He spent two of the next three nights partying in the British capital, causing some to suggest that his injury might have been Bolt's excuse for a rare failure.
