The Pittbsurgh Steelers struggled against the run in 2014, and a large part of that was the absence and injury of NT Steve McLendon. McLendon is now healthy and ready for 2015.
The Pittsburgh Steelers weren't ranked horribly against the run in 2014. 6th in the NFL to be exact, while giving up just over 100 yards a game, by average. Some teams would be ecstatic with a ranking as high as the Steelers had last season, but the ranking is rather deceiving. The Steelers got gashed through the air, and most opponents stopped even trying to run the football and focused on the pass to beat the Steelers.