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

Knowles was introduced as Penn State's defensive coordinator on Tuesday, one week after he left Ohio State to take the job.

STATE COLLEGE – Why Penn State? Why now? That was the question asked of new PSU defensive coordinator Jim Knowles late in his introductory press conference on Tuesday afternoon at Pegula Ice Arena. It’s an interesting question,