Djokovic retires hurt to send Zverev into Australian Open final

Novak Djokovic said Friday there was a chance he may have played his last Australian Open after retiring with a muscle tear in the semi-finals to leave his bid for a record 25th Grand Slam crown in tatters. While the German has been a Grand Slam runner-up twice before, at last year's French Open and the 2020 US Open, he has never before been to the final in Melbourne.