Novak Djokovic has revealed he will be playing in the Brisbane International, beginning Dec. 29 ... though newly-appointed coach and recently retired tennis star Andy Murray will not be in attendance.

Djokovic's new coach Andy Murray is not planning to join him for the Australian Open warm-up, Murray's team said.

One of the more popular theories was that Djokovic wanted someone who was competing against the current group of players on the ATP Tour. And if that was the case, Murray - who retired from pro tennis during the Paris Olympics - was the right man for that job.