(Repeat story published on Monday, no change to text) By Greg Stutchbury MELBOURNE, Jan 31 (Reuters) – The battle to stay at the top of men’s tennis is like a fight to keep hungry wolves at bay, Novak Djokovic said on Sunday after clinching a record-equalling sixth Australian Open title with a 6-1 7-5 7-6(3) victory over Andy Murray. The 28-year-old world number one is currently dominating the men’s game like Roger Federer did a decade ago, but he is keen to ensure that he stays ahead of a ferocious chasing pack that includes the vanquished Murray. “I believe that all the guys that are out there fighting each week to get to number one are very hungry to get to number one and I know that… “I think you need to work twice as hard when you’re up there.” There is no doubt that on present form Djokovic is still safely ahead of his rivals.