MELBOURNE, Australia -- And then there was one: The Big Three is down to just Novak Djokovic, who stands alone from a golden generation of men’s tennis now that Rafael Nadal has joined Roger Federer in retirement.

10-time Australian Open champion Novak Djokovic faces a tough road ahead in his bid for a record-extending 11th title at the Melbourne Park. The Serbian star could meet Carlos Alcaraz in the quarter-final and world No. 2 Alexander Zverev in the semis.

All of the attention will be on Andy Murray and Novak Djokovic's new partnership in the next fortnight at the Australian Open as the Scot named his all-time greatest tennis player

Novak Djokovic is heading into the Australian Open with new optimism as he targets his 25th Grand Slam title in Melbourne, but he will face a slide down the ATP Rankings if his recent trend in form continues.