Alejandro Falla of Colombia serves to Stanislas Wawrinka of Switzerland during their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 15, 2014.(AP Photo/Eugene Hoshiko)

Australian Open Tennis

Alejandro Falla of Colombia serves to Stanislas Wawrinka of Switzerland during their second round match at the Australian Open tennis championship in Melbourne, Australia, Wednesday, Jan. 15, 2014.(AP Photo/Eugene Hoshiko)

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