PITTSBURGH—The Steelers re-signed running back Najeh Davenport and released rookie cornerback Roy Lewis on Thursday.

Davenport spent the 2006 and 2007 seasons with Pittsburgh but was released in June. He was re-signed in October after Willie Parker injured a knee, first-round draft pick Rashard Mendenhall was lost for the season with a shoulder injury and fullback Carey Davis sprained an ankle. He was released again Nov. 8.

In two-plus seasons with Pittsburgh, Davenport ran for 768 yards, seven touchdowns and a 4.3 yards per carry average. He also had three touchdowns o...

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