The Ravens have promoted rookie running back Fitzgerald Toussaint from the practice squad to the active roster, according to sources with knowledge of the situation.
The Ravens placed backup offensive lineman Jah Reid on injured reserve after he aggravated a previously broken right hand that required surgery.
Rookie running back Lorenzo Taliaferro has a sprained foot and is in a walking boot and is expected to miss Sunday's game against the Jacksonville Jaguars, according to a source.
"Definitely, I'm always prepared," Toussaint said Friday. "I try to do everything every week as I'm playing. As a practice-squad guy, you don't want to get caught off-guard."
Toussaint went undrafted out of Michigan where he was an All-Big Ten Conference honorable-mention selection in 2011 when he rushed for a career-high 1,041 yards and nine touchdowns.
The 5-foot-9, 204-pound back ran the 40-yard dash in 4.49 seconds at his campus Pro Day workout and bench pressed 225 pounds 24 times.
"Fitz has done a great job," Ravens coach John Harbaugh said Friday. "He comes out here and he goes against our defense and they get after him pretty good. He plays the game pretty much on Wednesday and Thursday as much as you can simulate it. He's ready to go and we have a lot of confidence in him."
Reid is a 6-foot-7, 320-pound 2011 third-round draft pick from Central Florida who played earlier this season against the Indianapolis Colts and the Atlanta Falcons.
Reid played in 10 games as a backup guard last season and saw limited action. He started seven games in 2012 before a foot injury ended his season and required surgery.
Reid is in the final season of a four-year, $2.6 million rookie contract.
The Ravens now have 13 players on injured reserve. That includes Reid, cornerbacks Jimmy Smith, Tramain Jacobs, Danny Gorrer and Aaron Ross, defensive linemen Brent Urban, Kapron Lewis-Moore and Christo Bilukidi, wide receiver Jeremy Butler, long snapper Morgan Cox, tight ends Dennis Pitta and Konrad Reuland and offensive guard Will Rackley.