The Australian Open

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Roger Federer of Switzerland makes a backhand return to James Duckworth of Australia during their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.(AP Photo/Eugene Hoshiko)

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Victoria Azarenka of Belarus holds an ice pack around her during a break in her first round match against Johanna Larsson of Sweden at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.(AP Photo/Eugene Hoshiko)

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Roger Federer of Switzerland serves to James Duckworth of Australia during their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.(AP Photo/Eugene Hoshiko)

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Frank Dancevic of Canada sits with an ice pack on his head after collapsing during his first round match against Benoit Paire of France as temperatures topped at 43 C (108 F) at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014. (AP Photo/Aijaz Rahi)

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Frank Dancevic of Canada lies on the court after collapsing during his first round match against Benoit Paire of France as temperatures topped at 43 C (108 F) at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014. (AP Photo/Aijaz Rahi)

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Bethanie Mattek-Sands of the U.S. sits on a chair during a break in her first round match against Maria Sharapova of Russia at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.(AP Photo/Rick Rycroft)

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Sorana Cirstea of Romania rests on the back of the court during her first round match against Marina Erakovic of New Zealand at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014. (AP Photo/Aijaz Rahi)