Roberto Bautista Agut of Spain hits a backhand return to Grigor Dimitrov of Bulgaria during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 20, 2014.(AP Photo/Aijaz Rahi)

Australian Open Tennis

Roberto Bautista Agut of Spain hits a backhand return to Grigor Dimitrov of Bulgaria during their fourth round match at the Australian Open tennis championship in Melbourne, Australia, Monday, Jan. 20, 2014.(AP Photo/Aijaz Rahi)

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