As Novak Djokovic waved at the chair umpire, indicating that he was quitting his semi-final, Australia was a whisker away ...

Speculation is growing about whether Andy Murray could return, after leading Novak Djokovic to the Australian Open semi-finals.

Novak Djokovic is 37 and was forced to stop playing because of an injury at two of the past four Grand Slam tournaments.

Novak Djokovic took to the court with heavy strapping at the Australian Open, but had to call it quits. Find out more here.