Roberto Bautista Agut of Spain celebrates after winning his second round match against Juan Martin del Potro of Argentina at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014. (AP Photo/Andrew Brownbill)

Australian Open Tennis

Roberto Bautista Agut of Spain celebrates after winning his second round match against Juan Martin del Potro of Argentina at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014. (AP Photo/Andrew Brownbill)

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