Victoria Azarenka

Former champion Victoria Azarenka, who has been locked in a custody battle over her young son, pulled out of the Australian Open on Monday. The two-time winner had been handed a wildcard into the opening Grand Slam of the year in Melbourne, starting on January 15, but will not be making the trip. "It's unfortunate that Azarenka is unable to travel to Australia this year," tournament director Craig Tiley tweeted.