That's called coaching, Riley. Notice how Iowa saw your best run stuffer at safety go out of the game so what do they do, run it right where he should be.
Kind of the opposite of having a red-shirt QB with 18 career passes throw it all over the place. It's called an "in game adjustment"
Riley got so lucky Eichorst came calling. His Oregon State team would have sucked this year and he would have been fired there for sure. Now he has 4 more years on his contract at NU.