This could be bad for the Steelers.
"Stephon Tuitt went from limited by an elbow injury on Wednesday to out on Thursday. Tuitt said he hurt the elbow during drills on Wednesday and expects to be back in action on Friday."
Also out on Thursday was Javon Hargrove. He had a back injury.
We also know Artie Burns went out yesterday but said he will play this weekend.
That's 3 starters on defense