Rashard Mendenhall keyed the Steelers run to the Super Bowl with 230 yards rushing and four touchdowns in the postseason. While Mendenhall is more of a workhorse back then a dynamic presence, he is going into just his fourth season, and his best years are ahead.
Isaac Redman is a 6'0, 230 pound back-up who averaged 4.8 yards per carry last season. The Steelers could improve on Mewelde Moore but also have Jonathan Dwyer in the fold.
Receiver is where the Steelers have an incredible abundance of talent. Hines Ward might be 35, but he still caught 59 passes for 755 yards, and he always seems to perform in the clutch. The emerging superstar is Mike Wallace, who caught 60 passes for 1,257 yards. That's 21 yards per catch folks. 10 catches went for touchdowns.
Emmanuel Sanders showed a tremendous amount of promise in his rookie year (28 catches with seven more in the postseason), especially in very limited duty, and Antonio Brown also has upside. Even Antwaan Randle-El seemed to be rejuvenated in his return to Pittsburgh.
Ben Roethlisberger is somewhat of an enigma. Due to his early season suspension, he only played in 12 regular season game and threw for 3,200 yards and only 17 touchdowns. But, the number that stood out was his five interceptions, a career low. Unfortunately for Pittsburgh, Roethlisberger was simply pedestrian in the playoffs, throwing for as many picks as touchdowns, four, and having a passer rating over 20 points lower than he did in the regular season.
Still, Roethlisberger has been remarkably durable and only figures to improve with a full season and his young wideouts becoming more mature. This offense has a tremendous amount of upside and currently has the best combination of quarterbacks, running backs and wide receivers in the NFL.