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LONDON, ENGLAND - JULY 05: Petra Kvitova of The Czech Republic plays a forehand during the Ladies Singles second round match against Madison Brengle of The United States on day three of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2017 in London, England. (Photo by Julian Finney/Getty Images)

LONDON, ENGLAND - JULY 05:  Petra Kvitova of The Czech Republic plays a forehand during the Ladies Singles second round match against Madison Brengle of The United States on day three of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on July 5, 2017 in London, England.  (Photo by Julian Finney/Getty Images)