Oakland Raiders quarterback Jason Campbell (8) is tackled by San Francisco 49ers defensive tackle Justin Smith, left, as linebacker Ahmad Brooks (55) lands on him in the first half of a preseason NFL ... more 
Oakland Raiders quarterback Jason Campbell (8) is tackled by San Francisco 49ers defensive tackle Justin Smith, left, as linebacker Ahmad Brooks (55) lands on him in the first half of a preseason NFL football game in San Francisco, Saturday, Aug. 20, 2011. Campbell left the game after the play. (AP Photo/Marcio Jose Sanchez) less 
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Associated Press | Photo By Marcio Jose Sanchez
Sat, Aug 20, 2011 11:32 PM EDT