The Steelers will go with Justin Hartwig at center again this Saturday when they take on the Vikings at the Metrodome. Hartwig, who the team signed this offseason after he was released from Carolina, started at center last week in the teams loss to the Bills, and played well. Sean Mahan was the starter at center last season and started the first preseason game, but by all indications Hartwig has overtaken him in that spot, meaning the team could move Mahan to another spot on the line or simply keep him on the bench and use him in a reserve role.