Greg Mattison Greg Mattison ( born November 15 , 1949 ) is an American football coach and former player in the United States . He is the current defensive coordinator for the University of Michigan football team . Mattison was formerly the defensive coordinator for the Baltimore Ravens of the NFL . He also served as co - defensive coordinator and defensive line coach for the Florida Gators football team for three years , including the 2006 BCS National Championship team . Coaching career . Greg Mattison has a long and accomplished coaching career . Starting as head coach at Logan High School in La Crosse , Wis . , for two seasons ( 1974 - 75 ) . He began his coaching career as head coach at Riverdale High School in Muscoda , Wis . ( 1971 - 73 ) . Mattison got his break as a graduate assistant at Illinois in 1976 and moved up to being a Defensive line coach the following year at Cornell . Mattison spent most of his time as a Defensive Line coach in college football starting at Cornell in 1977 and continuing on with stops at Northwestern ( 1978 - 80 ) , Western Michigan ( 1982 - 86 ) , Navy ( 1987 - 88 ) , Texas A & M ( 1989 - 91 ) , Michigan ( 1992 - 94 ) , Notre Dame ( 2002 - 04 ) , and Florida ( 2005 - 07 ) . He served as Linebackers coach in the NFL with the Baltimore Ravens in 2008 . He also was a successful Defensive Coordinator multiple times in his career serving with Western Michigan ( 1985 - 86 ) , Michigan ( 1995 - 96 ) , Florida ( as co - coordinator in 2005 - 07 ) , Baltimore Ravens ( 2009 - 10 ) , and again with Michigan ( 2011 - present ) . On January 18 , 2011 , the Ravens announced that Mattison had accepted the defensive coordinator position at the University of Michigan . In returning to Michigan , Mattison reunites with Michigan head coach Brady Hoke , who is a close friend of Mattison ' s and was the Wolverines ' defensive ends coach during Mattison ' s previous stint as defensive coordinator at Michigan . His contract at Michigan makes him among the highest paid college football assistant coaches in the country . He was selected as one of five finalists for the 2011 Broyles Award . On January 26 , 2009 , Mattison was named promoted defensive coordinator of the Baltimore Ravens ; he was the successor of former defensive coordinator Rex Ryan . He was the teams linebackers coach , a job he got in part due to his relationship with John Harbaugh . During his time at WMU , Mattison coached alongside John Harbaugh , who was a graduate assistant and assistant coach . Harbaugh , then head coach of the Baltimore Ravens , hired Mattison to coach the Ravens linebackers . The job was Mattison ' s first NFL coaching position in 37 years of coaching football . At Florida , he served as co - coordinator of the defense with Charlie Strong Charlie Strong also served as assistant Head Coach and Linebackers coach while Greg also pulled double duty working as Defensive lines coach . During this time he was a part of a successful defense and team that went overall 31 - 8 in games played and won a national championship by beating Ohio State 41 - 14 in the BCS Championship game in 2006 . Prior to his time at Florida , Mattison coached at University of Notre Dame from 2002 to 2004 as the defensive coordinator under Bob Davie until the Ty Willingham era ( during which he served as defensive line coach and recruiting coordinator ) . Prior to his time at Notre Dame , Mattison coached the defensive line at the University of Michigan from 1992 to 1996 , while also serving at the defensive coordinator in 1995 and 1996 . During his time at Michigan , the Wolverines led the Big Ten Conference in rushing defense four consecutive seasons , holding opponents to 78 . 6 rushing yards per game in 1992 , 87 . 9 in 1994 , and 88 . 1 in 1995 . Mattison ' s charges also led the conference in total defense twice and scoring defense once . He also coached with Coach Davie at Texas A & M University from 1988 to 1991 while Davie was defensive coordinator . Under head coach R . C . Slocum , the Aggies featured the " Wrecking Crew " , a nickname for one of the nation ' s top - ranked defenses . Mattison was a finalist for the head coaching job at Western Michigan University following the 2004 season , a job that eventually went to Bill Cubit . Mattison had served as the defensive coordinator and linebackers coach under Jack Harbaugh at Western Michigan from 1981 to 1986 . Early life and family . Mattison is a graduate of the University of Wisconsin – La Crosse , where he played football and wrestled . He attended high school at Madison East High School in Madison , Wisconsin . Mattison ' s son , Bryan Mattison , was a senior captain for the 2007 Iowa Hawkeyes football team , and currently plays on the Kansas City Chiefs . He was previously a member of the Baltimore Ravens and the St . Louis Rams .