Oklahoma's search for a defensive coordinator is a month old and reportedly targeting a Sun Belt Conference defensive coordinator. Who is Nate Drieling?

Penn State announced Monday it had hired Jim Knowles as its defensive coordinator. According to multiple reports, Knowles reached a three-year contract with an average annual salary of $3.1 million. Knowles is a Philadelphia native. In a statement, Knowles said he was "excited for this opportunity" to join the Nittany Lions' program.

Knowles, a Philadelphia native with strong ties to the Northeast, transformed the Buckeyes' defense during an impressive three-year stint. Ohio State ranked top three in total defense each of the past two seasons and led the nation by holding opponents to 254.6 yards per game and 4.2 yards per play during a historic campaign.

Penn State made the hiring of new defensive coordinator Jim Knowles official on Monday. Here's what each had to say about the move

As Ohio State’s celebration tour for the school’s ninth national title continues, some of the Buckeyes’ key defensive players are grappling with the departure of their defensive coordinator. Jim Knowles decided to leave Columbus for Big Ten rival Penn State after three years at Ohio State,

Penn State released a video of new defensive coordinator Jim Knowles meeting with the program after his hiring.

Ohio State’s defensive coordinator is celebrating winning a national championship with a new contract — from one of their rivals.

Jim Knowles would join James Franklin's Penn State football staff after three seasons at Ohio State, where he won a national championship.

In hiring Jim Knowles, Penn State followed the adage: If you can't beat them, turn them to your side. While everyone in college football is already talking about Penn State's new defensive coordinator Jim Knowles, it's possible that not everyone is realizing how much his betrayal of Ohio State benefits his new club.

After Michigan football ran, ran again, and ran some more against rival Ohio State in 2021, Ryan Day recognized that he needed to make something of a drastic change. Out was longtime OSU staffer Kerry Coombs as the defensive coordinator, and in was Oklahoma State DC Jim Knowles.