Djokovic: I'm ready

Novak Djokovic claims to be in the best shape of his career as he bids to put last year’s ugly exit from the Australian Open behind him.

The Serb’s bid for a second consecutive crown at Melbourne Park wilted under the baking sun as cramps forced his early retirement from his quarter-final against Andy Roddick when trailing 7-6 (7-3) 4-6 2-6 1-2.