Andre Agassi hits a return to Pete Sampras in an exhibition tennis match at Madison Square Garden in New York, Monday, Feb. 28, 2011. Sampras won 6-3, 7-5. (AP Photo/Henny Ray Abrams)

Photo by: Henny Ray Abrams

Andre Agassi hits a return to Pete Sampras in an exhibition tennis match at Madison Square Garden in New York, Monday, Feb. 28, 2011. Sampras won 6-3, 7-5. (AP Photo/Henny Ray Abrams)