Penn State signee and St. Joseph's Prep star Cam Smith spoke to PennLive about the Nittany Lions hiring Jim Knowles from Ohio State.

Knowles would fill the void on Penn State’s staff left by Tom Allen, who accepted the same position with Clemson earlier this month.

Ohio State has lost its defensive coordinator to a Big Ten rival. 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.

As Ryan Day looks to hire his fourth defensive coordinator in seven seasons, here are potential candidates to replace Jim Knowles.

Ohio State football asked former defensive coordinator Jim Knowles to not show up to the Buckeyes championship celebration.

Penn State has lured Tom Knowles away from Ohio State. The Nittany Lions have hired Knowles to serve as their defensive coordinator.

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

The departure of defensive coordinator Jim Knowles adds a challenge for Ohio State, which was already dealing with heavy roster turnover on defense.

However, Knowles wasn’t in attendance. About an hour later, reports surfaced that Knowles is leaving Ohio State to serve as Penn State’s next defensive coordinator. The move leaves Day searching for a replacement. Here’s who he might consider as he enters his seventh season as the Buckeyes' head coach.

Just as Ohio State was celebrating its national championship victory at Ohio Stadium on Sunday, news broke that Jim Knowles was heading to Penn State.

It was the furthest thing from a happy ending between the newly minted Penn State defensive coordinator Jim Knowles and his former school.