With Djokovic eager to win a 25th major title, might rival-turned-coach Andy Murray be the secret ingredient for the 10-time champion Down Under?

The longtime rivals partnered up at the end of last year, and will collaborate as Djokovic mounts his campaign for an 11th title in Melbourne.

The 37-year-old is committed as ever "physically, mentally, as well and ready to compete, whatever it takes, however many hours it takes with the youngsters."