Taiwan's Chan Hao-ching with ice pack on her head, watches the first round match between Christina McHale of the U.S. and Chan Yung-Jan of Taiwan during their first round match at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014. (AP Photo/Shuji Kajiyama), APTOPIX

Kei Nishikori of Japan wraps an ice pack around his head during a break in his first round match against Marinko Matosevic of Australia at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.(AP Photo/Aaron Favila), APTOPIX

Sweat drips from the face of Rafael Nadal of Spain during a break in his first round match against Bernard Tomic of Australia at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.(AP Photo/Rick Rycroft), APTOPIX

France's Kristina Mladenovic during her first round match at the Australian Open tennis tournament at Melbourne Park in Melbourne, Australia on January 14, 2014. Photo by Corinne Dubreuil/ABACAPRESS.COM

France's Kristina Mladenovic during her first round match at the Australian Open tennis tournament at Melbourne Park in Melbourne, Australia on January 14, 2014. Photo by Corinne Dubreuil/ABACAPRESS.COM

France's Kristina Mladenovic during her first round match at the Australian Open tennis tournament at Melbourne Park in Melbourne, Australia on January 14, 2014. Photo by Corinne Dubreuil/ABACAPRESS.COM

Bethanie Mattek-Sands of the U.S. pours water to her neck as she sits in her chair between games during her first round match against Maria Sharapova of Russia at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014.(AP Photo/Aaron Favila)

In this photo released by Tennis Australia, Italian tennis player Fabio Fognini cools down in a fountain in central Melbourne as temperatures topped at 43 C (108 F) at the Australian Open tennis championship in Melbourne, Australia, Tuesday, Jan. 14, 2014. (AP Photo/Tennis Australia, Fiona Hamilton)

Dustin Brown, GER, practicing at the 2014 Australian Open in Melbourne; 13/01/2014 - Dustin Brown ger AT The 2014 Australian Open in Melbourne 13 01 2014

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)

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)

Frank Dancevic of Canada applies an ice pack to 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)

Frank Dancevic of Canada applies an ice pack to 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)

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)

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)