The Michigan-Ohio State rivalry is getting kicked up another notch this offseason with the Buckeyes taking an assistant from the Wolverines.
Mattison has been a solid recruiter and stabilizing force for a MI coaching staff that's undergone plenty of turnover during the Harbaugh era.
Ohio State is replacing defensive coordinator Greg Schiano with a pair of new defensive coaches, one of them a longtime assistant from rival MI.
San Francisco 49ers Jeff Hafley during an NFL football game against the, Sunday, Oct. 1, 2017, in Glendale, Ariz. "I like having a diversity of opinion, but even more I like the expertise and experience that Jeff has in the secondary coupled with the expertise that Greg brings to the front seven".
So who takes Flores' spot if he winds up joining one of the four teams who have interviewed him for a head-coaching job?
Mattison's defection to Ohio State, where he will serve as co-defensive coordinator, clearly set the stage for Washington to do the same. Schiano came to Ohio State three seasons after he was the head coach of the Tampa Bay Buccaneers.
Ohio State's defense gave up 5.6 yards per play in 2018 and had a tendency to give up big plays. This is also the third new defensive assistant added by head coach Ryan Day in the past 24 hours. He even joked that he wouldn't have retired this year had the Buckeyes not beat MI.
Stay tuned for an official announcement from Ohio State.
Of course, he also worked for Don Brown, Michigan's defensive coordinator.