The Packers have lost starting center Jason Spitz for the season due to a back injury.  He played in 5 games (4 starts) for the Packers this season.  Replacing Spitz will be Scott Wells who has played in 6 games (5 starts) this season for the Packers.  Losing Spitz has really hurt the team so far this season as the Packers were depending on him.  At least they had a decent backup like Wells to take over at center.