Djokovic is only interested in tennis' biggest prizes. He still has the game to win them, but at age 37 his body is letting him down

Novak Djokovic is 37 and was forced to stop playing because of an injury at two of the past four Grand Slam tournaments.

Novak Djokovic has reacted to the crowd at the Australian Open booing after he decided to retire from his semifinal against Alexander Zverev. The Serbian tennis player, 37, had taken to the court with his left leg heavily taped following Tuesday’s injury.

Novak Djokovic is out of the Australian Open in stunning fashion. The 24-time slam champion medically retired immediately after dropping the first set of his semifinal match against No. 2 Alexander Zverev in a tiebreak 7-6 (5).

Alexander Zverev urges fans not to boo Novak Djokovic, who retired in the Australian Open Semifinals due to injury

Andy Murray is determined to improve as a coach after his first grand slam experience with Novak Djokovic. Whether the pair will continue to work together remains to be seen but the experience appears to have whetted the Scot’s appetite.

Andy Murray potentially working with Emma Raducanu has got the green light from Mark Petchey, who thinks the former world No 1 would be able to elevate the game of his fellow Briton. Murray recently worked with Novak Djokovic at the Australian Open,

Novak Djokovic has admitted he's not sure whether his partnership with Andy Murray will continue past the Australian Open, but a leading tennis expert has explained why it might be beneficial to keep working together.