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 responded after being booed off on the back of his retirement from his Australian Open semi-final match. On Friday, Djokovic continued his quest for a 25th Grand Slam title as he took on German Alexander Zverev in the semi-final of the 2025 Australian Open.

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.