Djokovic caps 'perfect' tourney

Relentless attack and flawless defense pave the way for fourth win at Miami

Novak Djokovic stretched like a rubber band to hit a backhand. He sprinted into the other corner and scooped out forehands as if he was wielding a shovel. He ran forward to slice a ball off his shoetops. And he flicked a difficult half-volley past a weary Rafael Nadal for a winner.

That was just on the last point.