Novak Djokovic challenged the resurgent Roger Federer and the rest of the men's field to "keep up" as the world No 1 bids to repeat his landmark 2011.
Djokovic, who named the London Olympics as a top priority for the year, shrugged off the all-time grand slam champion's strong finish to last season, which culminated in victory at the ATP World Tour Finals.
Djokovic, 24, went 70-6 last year and won 10 of 11 finals including three grand slams, starting with his demolition of current world No 4 Andy Murray at the Australian Open in January.
Speaking before he begins his title defence in Melbourne, Djokovic said he was primed to repeat his golden season, despite Federer's late-year hot streak.
"Well, he finished off the season best from all the other players. He had over 15 wins in a row. He definitely loves playing indoors," Djokovic said.
"But, you know, it's a whole new year. It's a whole new season. We're starting to play outdoors.
"We'll see if everybody can keep up."
