The Jamaican sprinter Yohan Blake has underlined his status as the new world champion with victory over his countryman Asafa Powell in the 100 metres at the final Diamond League meeting in Zurich, in 9.82 seconds.
And teenager Kirani James who became Genada's first world athletics champion earlier this month, repeated his win over America's former world champion LaShawn Merritt in the 400 metres.
