The Steelers don't know much right now regarding the status of their three defensive stars who are dealing with groin injuries -- T.J. Watt, Joe Haden and Devin Bush -- but they do have a much clearer picture of what's happening on their defensive line.
And it's not pretty.
Already missing Stephon Tuitt because of a knee issue that required surgery, the Steelers lost nose tackle Tyson Alualu in Sunday's 26-17 loss to the Raiders to a fractured ankle that required surgery on Monday and could sideline him the remainder of the season.