I know more football than you think I do. Maybe Nebraska needs an extra large defensive tackle to help stuff the run. I think I may be over looking that. Something is causing those runs up to middle to happen without the running backs ever being touched. That early 1st quarter touchdown run up the middle against South Dakota State was awful play by the defensive line and supporting linebackers.
Nebraska needs a defensive tackle that weighs about 350 pounds to assist in shutting down the run. Alabama's Terrence Cody (6-4, 350) and Georgia's Kwame Geathers (6-6, 345) and John Jenkins (6-4, 355) are a few to mention. But you have to recruit those run-stopper D-linemen.
If the new Nebraska defense grows up, stops committing penalties at bad times (i.e. - UCLA game - 9/14), and does a better job of tackling---then everything comes together. I think the athletes coach Bo Pelini has put out there are of tremendous quality, but it may very well be a last-ditch effort to save his job. Those are athletes I see out there on defense for Nebraska. Coach Pelini coached at LSU, so he knows athletes. Again, he's trying to save his job.
The last three quarters of the South Dakota State game had that defense looking pretty stout. I'm just saying it won't surprise me at all if the Nebraska defense begins to stiffen on opposing offenses in the upcoming weeks.