David DeCastro injury: Steelers out of linemen as right guard hurts ankle in third quarter

The Steelers interior offensive line has been badly damaged in their game against the Oakland Raiders. They lost left guard Ramon Foster to a concussion in the second quarter and back-up left guard Guy Whimper (knee) and right guard David DeCastro (ankle), leaving the team without a back-up offensive lineman.

If DeCastro cannot return, Mike Adams will enter the game in some capacity, but someone will have to play guard.

The Steelers are trailing 21-3 in a game in which they've gained 146 yards, missed two field goals and have punted poorly (except for Zoltan Mesko's beauty in the third quarter).

DeCastro is questionable to return, but seeing him on the field could very well be a desperation move against a team that has essentially no chance of winning this game.

On the plus side, the Steelers now have four takeaways this season, having picked Raiders quarterback Terrelle Pryor off twice. It hasn't really mattered, because Oakland has run all over Pittsburgh, having racked up 183 rushing yards through three quarters.

More from Behind the Steel Curtain:

• Steelers vs. Raiders second half open thread
• Ramon Foster Injury: Steelers LG out with possible concussion, Guy Whimper in vs. Raiders
• Steelers vs. Raiders Inactives: Curtis Brown sitting again for Pittsburgh
• NFL Trade Deadline: Bringing Larry Fitzgerald back to Pittsburgh
• A win over Oakland could make Steelers playoff dreams more tangible