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.

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 ...

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

Hair loss is an issue often associated with men but 40 percent of women says they experience it by age 40 so dermatologist Dr ...

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

MELBOURNE (AP) — Novak Djokovic abandona su semifinal del Abierto de Australia tras perder el primer set ante Alexander Zverev.

MELBOURNE, Australia (AP) — Novak Djokovic retires from his Australian Open semifinal after losing the first set against Alexander Zverev.