 Despite the doubters Bolt blazed to gold in 9.63 breaking his own Olympic record with Blake taking the silver in an equal personal best of 9.75.The win meant Bolt became the second man in history to defend the Olympic 100m title.Veronica Campbell-Brown was attempting to become the woman to win three athletics golds in a row in the women's 200m final however it was the double Olympic 100m champion Shelly-Ann Fraser-Pryce that was Jamaica's only medalist in the event as she won silver behind Allyson Felix of USA in a personal best of 22.09, Veronica Campbell-Brown came fourth.