Pittsburgh Steelers running back Willie Parker is expected to be out until week 7. Parker has been ruled out for Monday night’s divisional showdown with the Baltimore Ravens and Steelers bear writer Ed Bouchette has confirmed an AP Report that Parker will miss the Steelers week 5 matchup against the Jacksonville Jaguars. The Steelers have a bye on week 6. The Steelers 2008 1st round pick Rashard Mendenhall will become the team’s primary back. Mewelde Moore will remain the Steelers third down back