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NEW YORK, NY - SEPTEMBER 11: Manolo Santana attends the Men's Singles Semifinals match between Roger Federer of Switzerland and Stan Wawrinka of Switzerland on Day Twelve of the 2015 US Open at the USTA Billie Jean King National Tennis Center on September 11, 2015 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Maddie Meyer/Getty Images)

NEW YORK, NY - SEPTEMBER 11:  Manolo Santana attends the Men's Singles Semifinals match between Roger Federer of Switzerland and Stan Wawrinka of Switzerland on Day Twelve of the 2015 US Open at the USTA Billie Jean King National Tennis Center on September 11, 2015 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Maddie Meyer/Getty Images)