Jim Harbaugh and Michigan didn't wait long to make the hire of Mike Macdonald official.
Macdonald, who spent the past three seasons as linebackers coach of the Ravens, became Michigan's defensive coordinator on Sunday, the day after Baltimore was eliminated from the playoffs. He coached under Harbaugh's brother John from 2013-20.
“Mike is an excellent defensive mind who is highly respected across the NFL," Harbaugh said Sunday in an official statement. "He has been a valuable member of the Baltimore Ravens staff, and shown a passion for teaching, coaching and developing his players. We are excited about everything that Mike brings to our defense, team and university."
Macdonald, 35, also served as a defensive assistant and defensive backs coach in Baltimore, and spent three seasons as an assistant at his alma mater Georgia before that. He'll take over a defense in Ann Arbor that ranked 87th in the country last season under former DC Don Brown.
Between Macdonald and 37-year-old offensive coordinator Josh Gattis, Michigan will have one of the youngest coordinator duos in the country.
“It is an honor to join Coach Harbaugh’s staff at the University of Michigan. I firmly believe in his vision and am excited to get to work," Macdonald said in the statement. "Our staff will work tirelessly to develop our young men both on and off the field – I cannot wait to meet and develop relationships with our players, staff, and community!"