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Rafael Nadal of Spain plays a forehand in his second round match against Tommy Haas of Germany during day three of the 2012 Australian Open at Melbourne Park. (Getty Images)
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Kim Clijsters of Belgium plays a backhand in her second round match against Stephanie Foretz Gacon of France. (Getty Images)
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Juan Martin Del Potro of Argentina plays a backhand in his second round match against Blaz Kavcic of Slovakia. (Getty Images)
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Li Na of China plays a forehand in her second round match against Olivia Rogowska of Belgium. (Getty Images)
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David Nalbandian of Argentina speaks to umpire Andreas Egli after losing a challenge in his second round match against John Isner of the USA. (Getty Images)
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Caroline Wozniacki of Denmark celebrates winning her second round match against Anna Tatishvili of Georgia. (Getty Images)
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Australian fans show their support at Melbourne Park. (Getty Images)
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Victoria Azarenka of Belarus plays a forehand in her second round match against Casey Dellacqua of Australia. (Getty Images)
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Daniela Hantuchova of Slovakia plays a forehand in her second round match against Lesia Tsurenko of the Ukraine. (Getty Images)
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Jelena Jankovic of Serbia plays a forehand in her second round match against Kai-Chen Chang of Chinese Taipei. (Getty Images)