RIO DE JANEIRO, Usain Bolt drew down the curtain on his brilliant Olympic career by securing a sweep of the sprint titles for a third successive Games when Jamaica successfully defended the 4x100 metres relay crown on Friday.
Two days before his 30th birthday, Bolt ran the anchor leg as the Jamaicans won in 37.27 seconds to add the relay gold to the 100 metres and 200 metres titles he had won for a third straight Olympics.