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

Djokovic, who retired due to injury after the first set, was booed by the crowd as he walked off Rod Laver Arena.

I managed it better. This time that wasn't the case," Djokovic said after retiring vs. Alexander Zverev. But failing to defy his body in Melbourne a third time, at 37, isn’t the end of his career.

Novak Djokovic wrote a heartfelt message to Alexander Zverev on Instagram after his injury retirement in the Australian Open.

Spectators booed an injured Novak Djokovic as he left the court in Rod Laver Arena after quitting one set into his Australian Open semifinal against Alexander Zverev.

Novak Djokovic responds to boos as Jannik Sinner to face Alexander Zverev in Australian Open final - live - Djokovic is out of the Australian Open after retiring from his semi-final, with Zverev throu ...

Spectators booed an injured Novak Djokovic as he left the court in Rod Laver Arena after quitting one set into his Australian Open semifinal against Alexander Zverev on Friday. The AP's Howard ...

The top two seeds clash in the final as defending champion Sinner goes for back-to-back Australian Open titles ...

Former World No. 1 and three-time Grand Slam champion Andy Murray shared his thoughts on Novak Djokovic‘s injury at the Australian Open. The Serbian legend could only complete one set in the first ...

After an injury forced him to retire from the semifinals of the Australia Open on Friday, Serbian tennis icon Novak Djokovic ...

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