The Huskers front five struggled to open up running lanes against Northwestern – as Nebraska rushed for only 122 yards on the ground.
"It is focus, concentration and execution," said Nebraska head coach Bo Pelini. "There are times when our line has focused really well and it comes down to guys preparing and playing the way they've been coached. You have to bring it to the field on Saturday each and every time. That is the challenge you have ahead of you. Is it one thing? No."
With very few holes, Rex Burkhead only managed to collect 69 yards on the ground - his second lowest output of the season, despite 22 carries.
"If all five guys are not working together, it's not going to work right," said Husker offensive lineman Jeremiah Sirles. "I think all of us can take out turns and say that we could have played better."
Nebraska will have even a tougher test on Saturday when they travel to No. 12 Penn State. The Nittany Lions are allowing only 111 yards per game on the ground this season and sport a defense ranking the top 25 nationally in six primary categories.
"I think they're good," said Pelini. "They have a good front seven and they play hard and are physical. They do a nice job defensively."