Bolt takes third gold in relay sweep

Usain Bolt and Shelly-Ann Fraser Pryce secured their third gold medals of the Moscow world championships when the two 100m and 200m sprint champions anchored Jamaica to victory in the 4x100m relays on Sunday.

Bolt's task was made easier when American fourth-leg runner Justin Gatlin fluffed his start, stumbling and veering into the Jamaican's lane. The Jamaican quartet of Nesta Carter, Kemar Bailey-Cole, Nickel Ashmeade and Bolt secured the Caribbean nation a hat-trick of world titles in a time of 37.36. (Reuters)