Juan Martin del Potro of Argentina puts his arms up after defeating Bernard Tomic of Australia during the final of the Sydney International tennis tournament in Sydney, Australia, Saturday, Jan. 11, 2014.  (AP Photo/Daniel Munoz)

Australia Tennis Sydney International

Juan Martin del Potro of Argentina puts his arms up after defeating Bernard Tomic of Australia during the final of the Sydney International tennis tournament in Sydney, Australia, Saturday, Jan. 11, 2014. (AP Photo/Daniel Munoz)

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