The Redskins have placed starting RB Clinton Portis on the Injured Reserve List due to a serious concussion.  Portis played in 8 games for the Redskins this season and he carried the ball 124 times for 494 yards (4.0 ypc) with 1 TD run.  He also caught 9 passes for 57 yards (6.3 avg) with 1 TD grab.  This injury has really hurt the Redskins this season as it has put too much of the pressure on Jason Campbell to carry the team through the air.