NEW YORK, NY - SEPTEMBER 07:  Kimmer Coppejans of Belgium in action during his boys' singles quarterfinal match against Kaichi Uchida of Japan on Day Twelve of the 2012 US Open at USTA Billie Jean King National Tennis Center on September 7, 2012 in the Flushing neighborhood of the Queens borough of New York City.  (Photo by Clive Brunskill/Getty Images)