... week's promotion of linebacker J. D. Folsom, the Miami Dolphins have signed rookie running back Tristan Davis to fill the vacancy.

Undrafted out of Auburn in 2009, Davis signed with the Detroit Lions in late August and spent the first seven weeks of the regular season on the team's practice squad.

Background

An Atlanta native, Davis redshirted at Auburn University in 2004 before appearing in 12 games for the Tigers as a running back and safety in 2005. He rushed for 209 yards and two touchdowns on just 11 carries as a redshirt freshman.

Davis did not have a carry during his sophomore and junior seasons as a reserve tailback behind Kenny Irons, Ben Tate and Brad Lester.
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