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LONDON, ENGLAND - JULY 10: Andy Murray of Great Britain reacts in his Mixed Doubles third round match with partner Serena Williams of the United States against Bruno Soares of Brazil and Nicole Melichar of the United States during Day Nine of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 10, 2019 in London, England. (Photo by Alex Pantling/Getty Images)

LONDON, ENGLAND - JULY 10: Andy Murray of Great Britain reacts in his Mixed Doubles third round match with partner Serena Williams of the United States against Bruno Soares of Brazil and Nicole Melichar of the United States during Day Nine of The Championships - Wimbledon 2019 at All England Lawn Tennis and Croquet Club on July 10, 2019 in London, England. (Photo by Alex Pantling/Getty Images)

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LONDON, ENGLAND - JUNE 23: A ball girl goes to the assistance of the injured David Goffin of Belgium during the Gentlemen's Singles first round match against Andy Murray of Great Britain on day one of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club at Wimbledon on June 23, 2014 in London, England. (Photo by Mark Leech/Mark Leech Sports Photography via Getty Images)

LONDON, ENGLAND - JUNE 23:  A ball girl goes to the assistance of the injured David Goffin of Belgium during the Gentlemen's Singles first round match against Andy Murray of Great Britain on day one of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club at Wimbledon on June 23, 2014 in London, England. (Photo by Mark Leech/Mark Leech Sports Photography via Getty Images)

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TOPSHOT - Andy Murray of Great Britain breaks down during a press conference in Melbourne on January 11, 2019, ahead of the Australian Open tennis tournament. - Injury-plagued former world number one Murray on January 11, 2019 said he is set to retire this year and hopes to make it till Wimbledon, but conceded the Australian Open could be his last event. (Photo by William WEST / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE -- (Photo credit should read WILLIAM WEST/AFP/Getty Images)

TOPSHOT - Andy Murray of Great Britain breaks down during a press conference in Melbourne on January 11, 2019, ahead of the Australian Open tennis tournament. - Injury-plagued former world number one Murray on January 11, 2019 said he is set to retire this year and hopes to make it till Wimbledon, but conceded the Australian Open could be his last event. (Photo by William WEST / AFP) / -- IMAGE RESTRICTED TO EDITORIAL USE - STRICTLY NO COMMERCIAL USE --        (Photo credit should read WILLIAM WEST/AFP/Getty Images)