Novak Djokovic reaches the Australian Open semi-finals for a 7th time after eighth seed Kei Nishikori retired hurt.
Novak Djokovic sweated it out from behind the baseline to beat Australian John Millman 6-3 6-4 6-4 at the US Open.
Novak Djokovic will lurk as 14th seed for next week’s Australian Open in Melbourne.
Former champions Stan Wawrinka and Rafa Nadal gave Australian Open organisers a massive boost yesterday.
Azarenka, who has been locked in a custody battle over her young son, pulls out of the Australian Open.