Ohio State football coach Ryan Day had praise for defensive coordinator Jim Knowles on Sunday. While speaking at the Buckeyes' championship celebration inside Ohio Stadium, Day gave Knowles a shoutout and mentioned the defense’s dominance throughout the College Football Playoff.

Mike Zimmer, who spent last season as the Dallas Cowboys' defensive coordinator, said he will not be returning to the team on new head coach Brian Schottenheimer's staff and likely will retire from coaching in the NFL,

The Lions are promoting linebackers coach Kelvin Sheppard to defensive coordinator. Here are some things to know about Sheppard.

According to reports, Penn State is finalizing a deal to lure defensive coordinator Jim Knowles away from Ohio State.

Penn State has hired Jim Knowles as defensive coordinator after he helped Ohio State win the national championship, according to multiple reports.

ESPN’s Adam Schefter reported on Sunday afternoon that the Cowboys have requested to interview Ryan Crow for their defensive coordinator position.

The Bears are hiring former Saints coach Dennis Allen as their next defensive coordinator, per NFL Network Insider Ian Rapoport. Allen is the first coordinator to be hired by new Bears coach Ben Johnson.

Former Raiders and Saints head coach Dennis Allen will be the Bears’ defensive coordinator, while Declan Doyle will serve as offensive coordinator, sources said Sunday night. Special teams coordinator Richard Hightower will return in the same role.

Here are three potential options who could fill the Ohio State Buckeyes' defensive coordinator vacancy in 2025.

The Cowboys have requested to interview Dolphins outside linebackers coach Ryan Crow for their defensive coordinator position, Adam Schefter of ESPN reports.

Former New Orleans Saints head coach Dennis Allen has landed a new coaching job. Allen is being hired to serve as the Chicago Bears’ defensive coordinator, NFL Media’s Ian Rapoport reported on Sunday.