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HONG KONG - OCTOBER 12: Angelique Kerber of Germany in action against Louisa Chirico of the United States during their Singles Round 2 match at the WTA Prudential Hong Kong Tennis Open 2016 at the Victoria Park Tennis Stadium on 12 October 2016 in Hong Kong,Ê the 2016 Hong Kong Open at Victoria Park on October 12, 2016 in Hong Kong, Hong Kong.Ê (Photo by Power Sport Images/Getty Images)

HONG KONG - OCTOBER 12: Angelique Kerber of Germany in action against Louisa Chirico of the United States during their Singles Round 2 match at the WTA Prudential Hong Kong Tennis Open 2016 at the Victoria Park Tennis Stadium on 12 October 2016 in Hong Kong,Ê the 2016 Hong Kong Open at Victoria Park on October 12, 2016 in Hong Kong, Hong Kong.Ê (Photo by Power Sport Images/Getty Images)