On Friday, Djokovic battled World No. 2 Alexander Zverev for 81 minutes in their semifinal match. However, Djokovic immediately retired after losing a 5-6 tiebreak in the first set.

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

Novak Djokovic admits that he could've played his final match at the Australian Open after retiring injured from his ...

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

Novak Djokovic's bid for 11th Australian Open title ends after a muscle tear in his left leg. He says injury happened during ...

Spectators booed as the 37-year-old Djokovic walked off toward the locker room, and he stopped, turned around and responded ...

Novak Djokovic retired injured after losing the first set 7-6(5) against Alex Zverev on Friday to put the German through to ...

Novak Djokovic surprised everyone when he retired due to injury after the first set of his match against Alexander Zverev, and surprisingly, some of the Open crowd booed. Maybe fans felt like they ...

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Donald Trump on Monday declared a national emergency at the US-Mexico border and announced plans to send US troops and ...

Novak Djokovic retires from his Australian Open semifinal after losing the first set against Alexander Zverev.