What would qualify as a good defense for Ohio State this year?

Ohio State's defense was bad last year. And the year before that. We're confident it will not be bad this season. But can it be good? And what exactly constitutes a "good" collegiate defense? Top-30 nationally? Better?The Buckeyes will have an elite offense, so if they can be good defensively, they are going to be a big problem for their opponents. Can new defensive coordinator Jim Knowles get OSU to that point?Jonah Booker joins Dave Biddle for his usual Friday visit to delve into all of that, take questions from Bucknuts subscribers and more.All of that and much more is coming your way on the Friday 5ish.