Starters: Brett Keisel, Steve McLendon, Ziggy Hood
Back Ups: Cameron Heyward, Al Woods and Loni Fangupo
Strengths: Once a monument to the aging of the Steelers defense, this unit has seen incredible renewal at each position.
Weaknesses: The nose tackle is the fulcrum that the success of the 3-4 defense rises and falls upon, as Ed Bouchette has said. He's right. Steve McLendon out performed Casey Hampton on a snap-per-snap basis in 2012. Can he keep that level consistently? Likewise, while this unit has gotten younger, can the youngsters prove they gotten better?
The Skinny: Like other areas of the team, the defensive line remains a question which could go one way or another. Ziggy Hood had a strong preseason by all accounts. Does the fact that he is starting mean that he's finally sustaining some development of a player, or does it simply mean that Cameron Heyward is likewise a disappointment?
Click here and scroll around to read analysis of other position areas on the Steelers 2013 Roster.