Jannik Sinner refuses to answer questions about Andy Murray-Novak Djokovic coaching link-up

Jannik Sinner is locked in on the Davis Cup Finals in many ways with the World No.1 refusing to answer questions surrounding the new link-up between Novak Djokovic and Andy Murray.

Murray will join up with his former rival as of next year and he will coach him at the Australian Open in what is a pretty big seismic shock for the tennis world. But despite this big news being the main topic of conversation, Sinner declined to comment.

The 37-year-old will coach Djokovic until at least the end of the Australian Open. Sinner is the reigning champion of the first major of the year which Djokovic has won 10 times.

He beat Murray in four of those finals in Melbourne. The announcement was made just as Sinner was leading Italy into battle at the Davis Cup with victory over Australia. As of time of writing, they are facing Netherlands in the final.

He had not yet been informed about the superstar partnership. But insisted that he didn't want to speak about it anyway instead wanting to focus on questioning on the Davis Cup. Djokovic announcing this move is perhaps a signal of intent towards Sinner and Alcaraz that he isn't yet done or it could be seen as giving one of his friends and former rivals help in getting into the tennis world.

Either way it creates both some big publicity ahead of a big year for Djokovic as well as Sinner.

"I am excited to have one of my greatest rivals on the same side of the net, as my coach," Djokovic said in their joint-announcement which had a dramatic video on social media accompanying it.

"Looking forward to start of the season and competing in Australia alongside Andy with whom I have shared many exceptional moments on the Australian soil."