Ryan Day's found Ohio State's next defensive coordinator, completing his 2025 staff. And it comes with some lingering ...

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

He was a Broyles Award finalist as well. When Day constructed his first staff in 2019, he hired Hafley to call the defense as a co-coordinator with Greg Mattison, and the Buckeyes ended up leading the ...

When Day constructed his first staff in 2019, he hired Hafley to call the defense as a co-coordinator with Greg Mattison, and the Buckeyes ended up leading the FBS in total defense. Hafley ...

The scope of Ohio State’s defensive rebuild grew on Sunday. Reports surfaced of defensive coordinator Jim Knowles leaving for the same role at Penn State, a move that became official within 24 ...

"Dan Mullen - obviously he hired my son - I talk to him all the time. Greg Mattison, some of the great coaches. "And then you start looking at these players. I talked to Reggie Nelson two nights ago.