Bethanie Mattek-Sands of the U.S. plays from the net against Agnieszka Radwanska of Poland during their women's singles match at the Sydney International tennis tournament in Sydney, Australia, Tuesday, Jan. 7, 2014.  (AP Photo/Daniel Munoz)

Australia Tennis Sydney International

Bethanie Mattek-Sands of the U.S. plays from the net against Agnieszka Radwanska of Poland during their women's singles match at the Sydney International tennis tournament in Sydney, Australia, Tuesday, Jan. 7, 2014. (AP Photo/Daniel Munoz)

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