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Spanish tennis player Rafael Nadal celebrates his match against Croatian tennis player Marin Cilic during the semi-finals of ATP of the Mexican Tennis Open in Acapulco, Guerrero State, Mexico, on March 3, 2017. / AFP PHOTO / ALFREDO ESTRELLA (Photo credit should read ALFREDO ESTRELLA/AFP/Getty Images)

Spanish tennis player Rafael Nadal celebrates his match against Croatian tennis player Marin Cilic during the semi-finals of ATP of the Mexican Tennis Open in Acapulco, Guerrero State, Mexico, on March 3, 2017. 

 / AFP PHOTO / ALFREDO ESTRELLA        (Photo credit should read ALFREDO ESTRELLA/AFP/Getty Images)