Jamaican sprinter Usain Bolt has shattered his own world record to win the Olympic 100 metres final in 9.69 seconds in Beijing.
Bolt, who set the previous mark of 9.72 in May, found time to look around, grin to the crowd and thump his chest as he crossed the line two metres clear of Richard Thompson of Trinidad and Tobago and American Walter Dix.
Former world record-holder Asafa Powell could only finish fifth and world champion Tyson Gay failed to make the final, in which the first six broke 10 seconds for the first time.
Bolt, who prefers the 200 metres, is now odds-on to become the first man to complete the Olympic sprint double since Carl Lewis in 1984.
