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The Ravens problems stopping the run have nothing to do with coaching.
Rather, they've struggled with personnel issues all season. Nobody, not even touted All-Pro Haloti Ngata, has succeeded in stuffing the run effectively.
Meanwhile, the pass rush has been non-existent. Just 12 sacks in seven games shows how far this unit has fallen, making the shaky cornerback duo look that much worse.
Ma'ake Kemoeatu has been an absolute disappointment stepping in as a starter at nose tackle, while Terrence Cody has been little better in relief. Both get pushed around on a regular basis.
The Ravens could try to use Ngata as a nose tackle, but it would neutralize his elite explosion and keep him from being an effective pass rusher.
Opposite Ngata are Pernell McPhee and Arthur Jones, neither of whom have stood out. McPhee has been dealing with injury, but he gets pushed around regularly and may need to be benched until he's healthy.
Jones, meanwhile, has been no better in run defense and offers even less of a pass rush. It's time to give Bryan Hall and DeAngelo Tyson more reps.
A healthy Terrell Suggs could allow Albert McClellan to step inside to replace a struggling Jameel McClain. McClain has just 17 tackles this season, despite being on the field for 183 running plays. He has been unproductive at best, and pushed around at worst.
McClellan, on the other hand, has played less than McClain and has still managed 20 tackles. He's better suited for the inside, so replacing McClain with McClellan could be a no-brainer.
Finally, the outside linebackers would consist of Terrell Suggs, Courtney Upshaw and Paul Kruger. Upshaw and Suggs are excellent run defenders, while Kruger is a balanced player who is solid but doesn't excel in one area.
The Ravens should be able to find a pass rush between these three. Suggs by himself offers a pass rush, so he'll only need a little support from Upshaw and Kruger.
With some personnel shake-ups, the Ravens might be able to find a front seven that works. Keeping the same players in the same positions, though, would be folly.