CHICAGO - OCTOBER 17: Pete Sampras plays in the 2012 Powershares QQQ Challenge at the United Center on October 17, 2012

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CHICAGO - OCTOBER 17: Pete Sampras plays in the 2012 Powershares QQQ Challenge at the United Center on October 17, 2012 in Chicago. MAX HERMAN/ALAMY

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Size: 4196px × 2798px
Location: Chicago, Illinois
Photo credit: © Max Herman / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: action, center, challenge, chicago, competition, pete, powershares, qqq, sampras, sports, swing, tennis, tournament, united