Novak Djokovic rounded on his critics on Saturday the day after retiring injured in his Australian Open semi-final after the first set against Alexander Zverev to boos from the crowd at the tournament he has won 10 times.

Novak Djokovic’s quest for a record 25th grand slam title has been cut short at the Australian Open after he stunningly retired from his semifinal match due to a left leg injury.

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,