Maria Sharapova of Russia takes part in a training session in Brisbane on December 29, 2012, ahead of the upcoming Brisbane International tennis tournament. Top international men's and women's players are using the Brisbane International as a build-up to the Australian Open, which runs from January 14 to 27. AFP PHOTO/Tertius PICKARD USE
Maria Sharapova of Russia reacts against Alexandra Dulgheru of Romania during their women's singles second round match on Day Three of the 2014 US Open at the USTA Billie Jean King National Tennis Center on August 27, 2014 in the Flushing neighborhood of the Queens borough of New York City.
Maria Sharapova of Russia reacts after won her match against Svetlana Kuznetsova of Russia during day two of the 2014 Dongfeng Motor Wuhan Open at Wuhan Guanggu International Tennis Center on September 22, 2014 in Wuhan, China.