Australian Open: Novak Djokovic out to prove point on Melbourne return but body is his biggest obstacle

As sporting certainties go, this is not quite Rafael Nadal and the French Open, but Novak Djokovic and the Australian Open come a close second.

The Serbian has lost just three matches at the tournament since 2011 and is bidding to extend his titles at Melbourne Park to 10 in a fortnight. Of his last 25 matches anywhere in the world, he has lost just one and was victorious in his only warm-up tournament for the Australian Open, the Adelaide International.