Novak Djokovic dramatically retired from his Australian Open semi-final against Alexander Zverev after being unable to play through a torn muscle in his upper left leg before admitting there is a “chance” may have played at the tournament for the final time.

Novak Djokovic played the first set of his Australian Open semi-final before retiring through injury as boos broke out from the crowd - but Alexander Zverev was quick to hit back

Novak Djokovic had to retire after just one set in his semi-final clash against Alexander Zverev due to an apparent injury problem. Jannik Sinner vs Ben Shelton to follow at the Rod Laver Arena.