Novak Djokovic says his rivalry with Andy Murray has “one final chapter” after his long-time adversary joined him as his coach for the upcoming Australian Open.

Murray – Britain’s greatest ever player – retired after this summer’s Olympics at the age of 37 after finally admitting defeat in his battle against his body.

Many in the game expected the Scot would one day return to tennis and become a coach, particularly due to his love of the sport, hard work and his tactical acumen.

But it came with some degree of shock on Saturday afternoon when a social media post from Djokovic, playing on Murray’s light-hearted tweet upon his departure, read: “He never liked retirement anyway”.

The attached video announced Murray, who he lost to in two Slam finals but beat in four Australian showpieces, would coach him over the winter and through January’s Open in Melbourne.

“We played each other since we were boys, 25 years of pushing each other to our limits. We had some of the most epic battles in in our sport. They called us gamechangers, risk-takers, history-makers,” Djokovic said.

“I thought our story may be over. Turns out it has one final chapter. It’s time for one of my toughest opponents to step into my corner. Welcome aboard, coach Andy Murray.”

Murray, who beat Djokovic to win the US Open in 2012 and Wimbledon in 2013, says he wants to help the 24-time grand slam champion achieve his goals.

“I’m going to be joining Novak’s team in the off-season, helping him to prepare for the Australian Open, he said.

“I’m really excited for it and looking forward to spending time on the same side of the net as Novak for a change, helping him to achieve his goals.”

Djokovic, a week younger than his new coach, added: “I am excited to have one of my greatest rivals on the same side of the net, as my coach.

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

Djokovic beat Murray in the 2011, 2013, 2015 and 2016 Australian Open finals as well as the French Open final in 2016.

It was after he unseated Djokovic at the top of the rankings in 2016 that Murray suffered the hip injury which ultimately derailed his career.

Since his retirement, Murray has been playing golf with the same dedication he pursued his tennis but will now return to his natural habitat.

Djokovic, who split with coach Goran Ivanisevic earlier this year, hopes that adding Murray to his team will help him get back to the top of the game after he went through a calendar year without winning a grand slam for the first time since 2017.

Jannik Sinner and Carlos Alcaraz have developed a stranglehold at the top of the men’s game and Djokovic, who has seen Murray, Roger Federer and Rafael Nadal all retire in recent years, is still hoping to move clear of the record 24 grand slams he shares with Margaret Court.