Through sources on Twitter, the Michigan Wolverines have hired Greg Mattison to be the Wolverines defensive coordinator.
The Baltimore Ravens announced the promotion of secondary coach Chuck Pagano as their new defensive coordinator, and that Mattison has taken the Michigan job.
The 61 year old Mattison returns to Michigan , where he was the defensive coordinator from 1995-1996.
New Michigan head coach Brady Hoke has ties with Mattison, first at Western Michigan, where Mattison was the D-Coordinator, and Hoke was the defensive line coach, from 1984-85-86, and at Michigan in 95-96.
The Ravens were #3 in the NFL in total defense in 2009, and #10 in 2010 under Mattison.