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AP Dallas Cowboys rookie Tyron Smith, right, goes through drills with teammates during NFL football practice Thursday, July 28, 2011, in San Antonio. (AP - Photo

Dallas Cowboys rookie Tyron Smith, right, goes through drills with teammates during NFL football practice Thursday, July 28, 2011, in San Antonio. (AP

Friday July 29, 01:10 AM
Dallas Cowboys rookie Tyron Smith, right, goes through drills with teammates during NFL football practice Thursday, July 28, 2011, in San Antonio. (AP Photo/Eric Gay)