Arizona Cardinals running back William Powell (33) is stopped by Buffalo Bills cornerback Stephon Gilmore (27) during the first half of an NFL football game on Sunday, Oct. 14, 2012, in Glendale, Ariz. (AP Photo/Paul Connors)

Associated Press
Arizona Cardinals running back William Powell (33) is stopped by Buffalo Bills cornerback Stephon Gilmore (27) during the first half of an NFL football game on Sunday, Oct. 14, 2012, in Glendale, Ariz. (AP Photo/Paul Connors)
Arizona Cardinals running back William Powell (33) is stopped by Buffalo Bills cornerback Stephon Gilmore (27) during the first half of an NFL football game on Sunday, Oct. 14, 2012, in Glendale, Ariz. (AP Photo/Paul Connors)
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