Djokovic knows his foes

Top seed Novak Djokovic has justifiably been nicknamed 'The Djoker' on the men's tour with his comical impersonations of fellow players, but on Saturday he revealed he is also a bit of a schemer.

Djokovic safely negotiated his way into the fourth round of the Australian Open with a 7-6 (8), 6-3, 6-4 victory over the feisty Fernando Verdasco to set up a fourth-round clash with Luxembourg's Gilles Muller.

Seeking a fifth Australian Open title, Djokovic said he had never played Muller before but had already accumulated quite a dossier of intelligence on the lefthander.