Knowles has succeeded at the highest level and completely remodeled an Ohio State defense that just won the national championship. But a long history of good defense at Penn State means his next steps won't be so clear-cut.

Jim Knowles was introduced as Penn State's defensive coordinator on Tuesday. Here's what he said about leaving Ohio State football.

Knowles won a national title as Ohio State's defensive coordinator last month. He is happy to relocate to a program he followed as a child.