Djokovic storms into US Open semis

Novak Djokovic showed he is very much the man to beat at the US Open with a stunning display to defeat Juan Martin Del Potro in straight sets in the quarter-finals.

The 6-2 7-6 (7/3) 6-4 scoreline does not remotely tell the story of a match where 2009 champion Del Potro threw everything at last year's winner only to see it come back with interest.