Andy Murray and coach Ivan Lendl have mutually agreed to part company again.
Murray, sidelined by a hip injury, said: “I’m thankful to Ivan for his help and guidance over the years.
“We’ve had great success and learned a lot as a team. My focus now is on getting ready for Australia with the team I have in place and getting back to competing.”
I wish Andy well. We had a great run and a lot of fun Ivan Lendl
Murray has had his biggest triumphs under Lendl.
He claimed Wimbledon, the US Open and Olympic titles in their first spell together from 2012 to 2014 before ending it following the player undergoing back surgery.
And then, following being coached by Amelie Mauresmo, the British No.1 secured the All England Club and Olympic crowns once more and made world No.1 after getting back together with Lendl last year.
Lendl, 57, himself a former No.1 and winner of eight Grand Slams, said: “I wish Andy well. We had a great run and a lot of fun.”
Murray, who was unable to defend his ATP Finals title this week, has slipped to a global ranking of 16 after withdrawing from the tour following his last-eight Wimbledon reverse against Sam Querrey in the summer.
The 30-year-old, who has been knighted, played Rogers Federer in a charity exhibition in Glasgow recently, announcing his aim to return for the new season, beginning in Brisbane.
Grigor Dimitrov, who plays Jack Sock in the last-four of the Nitto ATP Finals, is unconcerned that Murray might want his coach Dani Vallverdu, who once worked with the Scot.
The Bulgarian said: “If I’m worried? No. This (splitting with Lendl) is a choice. It’s not their first time splitting up anyways. Maybe it’s just a temporary thing. I don’t know what’s going on in his team.
“If you ask me if he’s going to take Dani, no. Obviously I can wish him only the best. I hope he has a speedy recovery. I miss playing against him. I miss practicing against him. Probably see him next year at some point