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

Former eight-time Grand Slam champion in doubles Nenad Zimonjic underlines that Novak Djokovic is "a smart guy" and therefore knows extremely well why he added Andy Murray to his coaching staff for the Australian Open.

BBC tennis correspondent Russell Fuller assesses what Novak Djokovic's shock appointment of Andy Murray as coach could mean for both men.

"It’s time for one of my toughest opponents to step into my corner. Welcome on board, Coach — Andy Murray,” Djokovic said

Former two-time French Open finalist Alex Corretja admitted he was in "total shock" when the Novak Djokovic and Andy Murray collaboration news dropped but also backed the partnership to succeed.

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.

By Charlie Eccleshare, Callum Davis and Matthew Futterman Novak Djokovic has appointed his former rival and three-time Grand Slam champion Andy Murray as his new coach. Murray, 37, called time on his illustrious 19-year career after the Paris Olympics in August but is returning to tennis to help the 24-time Grand Slam winner’s preparations for the Australian Open,

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

A message from 1959 French Open champion Christine Truman popped into my inbox as I cooked the bacon on Sunday morning. “Do you think Andy will opt for some GB youngsters after Djokovic for coaching?”