Sam Querrey of the U.S. walks off the court after his loss to Fabio Fognini of Italy during their third round match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Eugene Hoshiko)

Australian Open Tennis

Sam Querrey of the U.S. walks off the court after his loss to Fabio Fognini of Italy during their third round match at the Australian Open tennis championship in Melbourne, Australia, Friday, Jan. 17, 2014.(AP Photo/Eugene Hoshiko)

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