The Detroit Lions, perhaps looking for depth at linebacker, signed former Dallas Cowboys first-round pick Bobby Carpenter.

Carpenter, who was recently released by the Miami Dolphins, was traded from Dallas to the St. Louis Rams back in May. The Rams released him on Sept. 4. Miami signed him two days later, but he never really fit in there.

The Lions also signed C Cody Wallace off the New York Jets practice squad, who they worked out earlier this season.

-- Adam Caplan