Wimbledon 2012: Confident Djokovic into round three

Defending champion Novak Djokovic powers to a 6-4 6-4 6-4 win against American Ryan Harrison to book his place in the third round.

Djokovic admits afterwards that the game was "much more difficult" than the scoreline suggests.

The Serbian next plays against Radek Stepanek or German Benjamin Becker.