Novak Djokovic is out of the Australian Open in stunning fashion. The 24-time slam champion medically retired immediately after dropping the first set of his semifinal match against No. 2 Alexander Zverev in a tiebreak 7-6 (5).

An injured Novak Djokovic quit because of a torn muscle in his left leg after dropping the first set of his Australian Open semifinal against Alexander Zverev on Friday. Djokovic lost the opener 7-6 (5) in a tiebreaker and immediately walked around the net to concede the match to Zverev.

Novak Djokovic left Rod Laver Arena to a chorus of boos after dramatically pulling the plug on his Australian Open campaign a set into his semi-final against Alexander Zverev. There had been doubt about the Serbian's fitness until he took to the court after he suffered a left leg injury during his quarter-final against Carlos Alcaraz on Tuesday.