Novak Djokovic has taken on Andy Murray as his coach for the Australian Open. It makes sense to put half of the original Big Four in men's tennis together again.

Andy Murray has been announced as 24-time Grand Slam winner Novak Djokovic's new coach, but one of his adversaries isn't convinced.

The American said the Scot said 'no' to offers from many tennis players - women and men - in order to work with the Serbian champion

Andy Murray has taken up a coaching role with Novak Djokovic following his retirement from playing, but doubts have been raised by a top coach over the Brit's worthiness

Andy Roddick made a huge revelation about the Novak Djokovic and Andy Murray partnership as the 2003 US Open champion shares he was told that the newly retired Briton rejected multiple offers from "top male and female" players before accepting the Serb's invitation to work with him.

Competing with 'superheroes' gives the Scotsman a unique advantage, Roddick says. Besides, it's loyal friendship.

He also reflected on the new partnership between Djokovic and Murray: “He can contribute on the emotional side, on the mental side and, above all, bring him a lot in the game. Although Andy has no coaching experience, he has complete knowledge of Novak, he has known him for more than 20 years and that is a big advantage.”

Recently retired Andy Murray is going to team up with Novak Djokovic, working with him as a coach through the Australian Open in January.

Djokovic split with his coach after six years earlier this summer, and he's counting on Andy Murray to help him prepare for the Australian Open.