Minnesota Vikings running back Adrian Peterson (28) rushes for a gain as 

Minnesota Vikings running back Adrian Peterson (28) rushes for a gain as Houston Texans' Glover Quin (29) and Johnathan Joseph (24) defend during the third quarter of an NFL football game Sunday, Dec. 23, 2012, in Houston. (AP Photo/Patric Schneider)
Associated Press
Minnesota Vikings running back Adrian Peterson (28) rushes for a gain as Houston Texans' Glover Quin (29) and Johnathan Joseph (24) defend during the third quarter of an NFL football game Sunday, Dec. 23, 2012, in Houston. (AP Photo/Patric Schneider)
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