Novak Djokovic has retired from his Australian Open semifinal against Alexander Zverev after losing the first set in a tiebreak. Djokovic missed a regulation putaway volley on top of the net down 5-6,

Novak Djokovic sent a heartfelt message to Alexander Zverev moments after the world No. 2 lost the Australian Open final. Zverev advanced to the championship match when Djokovic retired from their semi-final. At the time, the Serb said he’d be cheering for his rival to lift the trophy.

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