The Baltimore Ravens signed undrafted rookie running back Fitzgerald Toussaint on Saturday, which could be an indication the team is unsure of Bernard Pierce's availability for Sunday's game at the Cleveland Browns.

Pierce, who has started the first two games of the season, is questionable with a thigh injury. He was limited in Thursday's practice and had full participation on Friday. Pierce has never missed a game in his NFL career despite battling numerous injuries.

If Pierce is unable to play, the Ravens would start Justin Forsett and use rookie fourth-round pick Lorenzo Taliaferro as the primary backup. Forsett has rushed for 126 yards, which leads the Ravens, and one touchdown. Taliaferro has yet to receive a carry.

Toussaint would provide depth at running back. He flashed his explosiveness in the preseason finale with several big runs and finished with 103 yards at New Orleans.

Undrafted out of Michigan, Toussaint was on the Ravens' 53-man roster for the season opener but was among the team's inactives.

The Ravens released wide receiver Deonte Thompson to make room for Toussaint on the 53-man roster.