ALLEN PARK -- The Detroit Lions have re-signed cornerback Alphonso Smith and released running back Keiland Williams.

Smith and former Lions cornerback Justin Miller worked out for Detroit yesterday. Lions rookie cornerback Bill Bentley is battling a shoulder injury, while cornerback Jacob Lacey is recovering from a concussion he sustained against the Philadelphia Eagles. Detroit signed Smith to a one-year deal worth $700,00 as a result of those injuries.

Bentley and Lacey did not participate in yesterday's practice leading up to Detroit's road game against the Chicago Bears on Monday Night Football. If neither are able to play, Smith or rookie Jonte Green could start against Chicago.

Smith was a second-round selection by Denver in 2009. He was traded to Detroit in 2010.

During Smith's three-year NFL career, he started in 10 of 39 games, plus has eight interceptions and 73 tackles. He was Detroit's No.1 cornerback at the start of this year's training camp, but lost that position to Bentley after a few days. He eventually was released prior to this season.

Smith worked out for the Miami Dolphins, but now rejoins the Detroit Lions.