The Ravens have ruled out Tom Zbikowski for Sunday's game against the Miami Dolphins.
The free safety, who missed the team's 37-34 overtime win against the Buffalo Bills on Oct. 24, did not practice on Monday, Wednesday, Thursday or Friday because of a bruised right heel.
Dennis Pitta was limited for the second consecutive day after suffering a concussion Monday, and the rookie tight end is listed as doubtful.
Wide receiver Donte' Stallworth, who has participated fully for the last three days after recovering from a broken bone in his left foot, is probable.
For the Dolphins, starting strong safety Yeremiah Bell (toe) was limited for the third straight day and is questionable for Sunday. Backup running back Patrick Cobbs (hamstring) did not practice for the second consecutive day, but he is also questionable.
Starting inside linebacker Channing Crowder (thumb) participated fully for the third straight day and is listed as probable.