Pierce aggravated a knee injury during Baltimore's thrilling double overtime win over the Denver Broncos on Saturday. Pierce carried the ball just five times for 14 yards in Baltimore's upset win.
Pierce was limited for Baltimore during the Ravens' Wednesday practice -- a good sign for both Pierce and the Ravens.
During the 2012 regular season, Pierce averaged 4.9 yards per carry.
Pierce has been listed on Baltimore's injury report twice in the playoffs so far. Pierce was limited in practice prior to the Wild Card round, and was listed as probable last week in the Divisional round.