Bad fundamentals on defense. They're going to need some work - tackling first and foremost.
Martinez looked better in this game than he ever has before. Far, far better. His mechanics may not be perfect, or there 100% of the time, but he is so far ahead of where he was before it's like watching a totally different player. Whether he can keep playing that well against a stiffer defense is another matter, but he has definitely improved a great deal. That can't be questioned.
I think our offense will be difficult to stop this season. If the defense can get their sh#t figured out, a Big 10 title is a realistic possibility.
I think Maher was hungover.