Djokovic retires to put Zverev into Aus Open final

Novak Djokovic's quest for a record-breaking 25th Grand Slam title was cut short due to an injury during his Australian Open semi-final match against Alexander Zverev on Friday. The Serbian star, who had his upper left leg heavily taped following a quarter-final injury, retired after losing a hard-fought first set 7-6 (7/5) to his opponent.

Djokovic retires to put Zverev into Aus Open final
Novak Djokovic's quest for a record-breaking 25th Grand Slam title was cut short due to an injury during his Australian Open semi-final match against Alexander Zverev on Friday. The Serbian star, who had his upper left leg heavily taped following a quarter-final injury, retired after losing a hard-fought first set 7-6 (7/5) to his opponent.