Steady Djokovic goes into quarters

Fourth seed Novak Djokovic swept into the US Open quarter-finals with a solid straight sets victory over Radek Stepanek at Arthur Ashe Stadium.

The Serbian former Australian Open champion scored a 6-1 6-3 6-3 win in an hour and 46 minutes over the 15th seed from the Czech Republic but was never really stretched by an inconsistent opponent.