The Lions have signed running back Kevin Smith to fortify their backfield, which has been depleted by injuries. Detroit drafted Smith in 2008 and let him go in 2010. "It feels good to be in pads, to be playing football again," Smith said. "I've been training since I had that (knee) injury that put me on injured reserve. Once I got healed, I went to work. But with the lockout and free agency, it took me a long time to get signed. "I am just glad the Lions gave me this opportunity. I am healthy and I have had a humbling experience. I am focused and I am hungry."