Angelique Kerber of Germany can not reach a high ball to return to Tsvetana Pironkova of Bulgaria during the women's singles final match at the Sydney International tennis tournament in Sydney, Friday, Jan. 10, 2014. Pironkova won the final 6-4, 6-4. (AP Photo/Rick Rycroft)

Australia Tennis Sydney International

Angelique Kerber of Germany can not reach a high ball to return to Tsvetana Pironkova of Bulgaria during the women's singles final match at the Sydney International tennis tournament in Sydney, Friday, Jan. 10, 2014. Pironkova won the final 6-4, 6-4. (AP Photo/Rick Rycroft)

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