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

Australian Open Tennis

Stanislas Wawrinka of Switzerland celebrates his win over Alejandro Falla of Colombia in 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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