Greg Mattison's move spices up Michigan vs. Ohio State rivalry even more

Coach Jim Harbaugh says Michigan is "up for it and ready for the challenge" for the game vs. Ohio State. Angelique S. Chengelis, The Detroit News

Ann Arbor – Michigan coach Jim Harbaugh this spring said Greg Mattison is off his Christmas card list. Chris Partridge, the Wolverines’ safeties coach and special teams coordinator, said he has “no desire” to speak to the Wolverines’ former defensive line coach. Aidan Hutchinson, a sophomore defensive end, retweeted a video of Mattison referring to Michigan as “the team up north” and included this message: “Oh, so it’s like that,” along with two snake emojis.

Mattison’s offense? He left Michigan to join arch-rival Ohio State to make nearly twice the…