Rashard Mendenhall will play, Steelers coach Mike Tomlin told NFL Network's Stacey Dales, and contribute as a backup. Mendenhall was a full participant in Friday's practice but was listed as questionable on the team's injury report. He injured his hamstring during Pittsburgh's 17-10 loss to the Houston Texans last week.
Redman has gained 107 yards on 22 carries so far this season.
Visit www.nfl.com/inactives for all of Sunday's inactive players.