Charles LeClaire-US PRESSWIRE
Troy Polamalu and Marcus Gilbert have already been ruled out of Sunday's matchup against the Washington Redskins.
Polamalu is still struggling with the lingering effects of a calf injury that was sustained in Week 1 against the Denver Broncos. He returned for the first quarter of the Steelers win over the Philadelphia Eagles.
He wasn't expected to play in this game, and is probably still a few weeks away, but the team has said they'll treat him week-to-week.
This story originally appeared at SB Nation.