Per Pro Football Focus (A very respected group):

Through the first eight weeks, Casey Hampton, Brett Keisel, and Ziggy Hood have been the hands-down worst 3-4 defensive line in the league. In 359 combined run snaps, they have just 12 defensive stops. In 499 combined pass rushes, they’ve pressured the quarterback just 13 times.
[url]https://www.profootballfocus.com/blog/2012/11/02/3tfo-steelers-giants-week-9/[/url]