In Baltimore's Wild Card win over the Indianapolis Colts, Pierce led the Ravens with 103 rushing yards -- 35 more than Ray Rice, on two fewer carries than Rice. Pierce only had five carries for 14 yards in the Divisional round.
During the regular season, Pierce carried the ball 108 times for 532 yards -- good for a 4.9 yards per carry average.
Despite the injury, Pierce "pledged" he'd be ready to play on Sunday.
Again per the Baltimore Sun, Brendon Ayanbadejo missed practice, but did not appear to suffer an injury during Baltimore's Divisional round win over Denver.
Kickoff between Baltimore and New England is set for 6:30 p.m. ET on Sunday, with a trip to Super Bowl XLVII on the line.