Bell (knee) did not practice Thursday, Bob Labriola of Steelers.com reports. Bell, who suffered a hyperextended knee against the Bengals in Week 17, thus remains iffy for Saturday's wild card game against the Ravens. If Bell is unable to play in the contest, ESPN.com indicates that Josh Harris would be in line to start in his place, with Dri Archer and newcomer Ben Tate, to a lesser degree, also in the mix for touches in the Steelers' backfield.