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LONDON, ENGLAND - JULY 10: Garbine Muguruza of Spain and Angelique Kerber of Germany shake hands after the Ladies Singles fourth round match on day seven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 10, 2017 in London, England. (Photo by Shaun Botterill/Getty Images)

LONDON, ENGLAND - JULY 10:  Garbine Muguruza of Spain and Angelique Kerber of Germany shake hands after the Ladies Singles fourth round match on day seven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 10, 2017 in London, England.  (Photo by Shaun Botterill/Getty Images)