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LLEIDA, SPAIN - APRIL 16: Garbine Muguruza of Spain celebrates defeating Francesca Schiavone of Italy during day one of the Fed Cup World Group Play-off Round match between Spain and Italy on April 16, 2016 in Lleida, Spain. (Photo by David Ramos/Getty Images)

LLEIDA, SPAIN - APRIL 16:  Garbine Muguruza of Spain celebrates defeating Francesca Schiavone of Italy during day one of the Fed Cup World Group Play-off Round match between Spain and Italy on April 16, 2016 in Lleida, Spain.  (Photo by David Ramos/Getty Images)

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LLEIDA, SPAIN - APRIL 17: (L-R) Captain Conchita Martinez, Garbine Muguruza, Sara Sorribes, Anabel Medina and Carla Suarez Navarro of Spain celebrate defeating Italy during day two of the Fed Cup World Group Play-off Round match between Spain and Italy on April 17, 2016 in Lleida, Spain. (Photo by Alex Caparros/Getty Images)

LLEIDA, SPAIN - APRIL 17: (L-R) Captain Conchita Martinez, Garbine Muguruza, Sara Sorribes, Anabel Medina and Carla Suarez Navarro of Spain celebrate defeating Italy during day two of the Fed Cup World Group Play-off Round match between Spain and Italy on April 17, 2016 in Lleida, Spain. (Photo by Alex Caparros/Getty Images)

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LLEIDA, SPAIN - APRIL 16: Garbine Muguruza of Spain celebrates winning a point against Francesca Schiavone of Italy during day one of the Fed Cup World Group Play-off Round match between Spain and Italy on April 16, 2016 in Lleida, Spain. (Photo by David Ramos/Getty Images)

LLEIDA, SPAIN - APRIL 16:  Garbine Muguruza of Spain celebrates winning a point against Francesca Schiavone of Italy during day one of the Fed Cup World Group Play-off Round match between Spain and Italy on April 16, 2016 in Lleida, Spain.  (Photo by David Ramos/Getty Images)

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LLEIDA, SPAIN - APRIL 16: Garbine Muguruza of Spain plays a forehand against Francesca Schiavone of Italy during day one of the Fed Cup World Group Play-off Round match between Spain and Italy on April 16, 2016 in Lleida, Spain. (Photo by David Ramos/Getty Images)

LLEIDA, SPAIN - APRIL 16:  Garbine Muguruza of Spain plays a forehand against Francesca Schiavone of Italy during day one of the Fed Cup World Group Play-off Round match between Spain and Italy on April 16, 2016 in Lleida, Spain.  (Photo by David Ramos/Getty Images)

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LONDON, ENGLAND - JULY 03: Garbine Muguruza of Spain celebrates after defeating Naomi Broady of Great Britain in their Ladies' Singles first round match on day two of the Wimbledon Lawn Tennis Championships at All England Lawn Tennis and Croquet Club on July 3, 2018 in London, England. (Photo by Matthew Stockman/Getty Images)

LONDON, ENGLAND - JULY 03:  Garbine Muguruza of Spain celebrates after defeating Naomi Broady of Great Britain in their Ladies' Singles first round match on day two of the Wimbledon Lawn Tennis Championships at All England Lawn Tennis and Croquet Club on July 3, 2018 in London, England.  (Photo by Matthew Stockman/Getty Images)