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LONDON, ENGLAND - JULY 04: Roger Federer of Switzerland celebrates match point against Lukas Lacko of Slovakia during their Men's Singles second round match on day three of the Wimbledon Lawn Tennis Championships at All England Lawn Tennis and Croquet Club on July 4, 2018 in London, England. (Photo by Clive Mason/Getty Images)

LONDON, ENGLAND - JULY 04:  Roger Federer of Switzerland celebrates match point against Lukas Lacko of Slovakia during their Men's Singles second round match on day three of the Wimbledon Lawn Tennis Championships at All England Lawn Tennis and Croquet Club on July 4, 2018 in London, England.  (Photo by Clive Mason/Getty Images)