Allyson Felix wins women's 200m

America's Allyson Felix made it third time lucky to win the Olympic 200m crown here last night and deny Jamaica's Shelly-Ann Fraser-Pryce a sprint double.

Felix powered to victory in 21.88sec to thwart Fraser-Pryce's hopes of adding the 200m title to her newly acquired 100m crown.

Fraser-Pryce took silver in 22.09sec with Carmelita Jeter of the United States winning bronze in 22.14sec.