Ohio State has a new opening on its defensive coaching staff.
Greg Mattison is set to retire at the end of January after two seasons as the Buckeyes' co-defensive coordinator, Ryan Day announced on Friday.
Mattison joined the Buckeyes in 2019, leaving Michigan to cross rivalry lines, when Ryan Day took over as head coach and revamped the defensive coaching staff. He served as co-defensive coordinator for both of his seasons on staff, pairing with Jeff Hafley in 2019 and Kerry Coombs in 2020, while also coaching the Sam linebacker position.
His decision to retire, at 71 years old, comes after 49 years in coaching, starting as a high school head coach and including a stint with the NFL's Baltimore Ravens along with more than 40 years as a collegiate assistant.