Novak Djokovic is 37 and was forced to stop playing because of an injury at two of the past four Grand Slam tournaments.
Spectators booed an injured Novak Djokovic as he left the court in Rod Laver Arena after quitting one set into his Australian ...
In Friday's semifinals, Djokovic plays No. 2 seed Alexander Zverev of Germany in a matchup of the last two Olympic singles gold medalists. Top seed Jannik Sinner, who won the Australian Open and U.S.