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FLUSHING MEADOW, NY - SEPTEMBER 1: Pete Sampras serves the ball during the 1990 U.S. Open on September 1, 1990 in Flushing Meadow, New York. Sapras went on to defeat Andre Agassi 6-4, 6-3, 6-2 to become the youngest men's champion in the Open's 110 year history. (Photo by Rick Stewart/Getty Images)

FLUSHING MEADOW, NY - SEPTEMBER 1:  Pete Sampras serves the ball during the 1990 U.S. Open on September 1, 1990 in Flushing Meadow, New York.  Sapras went on to defeat Andre Agassi 6-4, 6-3, 6-2 to become the youngest men's champion in the Open's 110 year history.  (Photo by Rick Stewart/Getty Images)