Bolt: I'm still number one

Jamaica’s Usain Bolt admitted he was delighted to prove his doubters wrong after retaining his Olympic 100m title in London.

Bolt set an Olympic record of 9.63 seconds, the second fastest time in history behind his own world record of 9.58secs, to leave reigning world champion and training partner Yohan Blake to take silver in 9.75 and 2004 champion Justin Gatlin the bronze in 9.79.