Serbian king Novak Djokovic invited his friend Murray to coach at this year's Australian Open, and according to British media reports, the cooperation between the two is expected to continue until the Wimbledon tennis tournament that starts on June 30.

Novak Djokovic (left) invited his friend Murray (right) to coach at this year's Australian Open.

Djokovic, who won 10 titles at the Australian Open, retired from the men's singles semifinals against Germany's Zverev in the men's singles semifinals this year due to a left leg injury and missed the 25th Grand Slam title.

In addition to the 22-year-old former US Open champion who decided to retire from Wimbledon mixed doubles last year, resulting in Murray's last dance failure, it was also revealed that Murray will continue to cooperate with Djokovic at the French Open and Wimbledon.

Djokovic, who is out of action due to injury, is expected to return to the Doha men's tennis tournament on the 17th of this month to continue to challenge for the 100-title milestone of his career, and The Times pointed out that Murray may not rejoin Djokovic's coaching team until the Indian Wells Masters in March.