Our old pal Barney put on a ho-hum performance with his OL in his return to NU. Yes it was only a spring game, but I'm sure that most of the 80,000 came away wondering about their OL performance. 66 carries for 171 yds (2.6 ypc) along with 4 sacks.
By contrast, McFarland's group opened the way for 201 yds on 57 carries (3.5 ypc) along with 3 sacks. Not a huge difference, but it's often enough to provide the winning edge in a competitive contest.
I'm sure that NU fans will claim that it was Bo's super defense that caused the problems. The truth is that both
ISU and NU have some serious work to do to get their D's to a championship level. It can be done over the next year or so, but their are currently too many concerns that both teams have to address.