Michigan announced the hiring Sunday of Mike Macdonald as Jim Harbaugh's new defensive coordinator.
Macdonald, 35, spent the past seven seasons with the Baltimore Ravens as an assistant coach under John Harbaugh, the last three as the linebackers coach.
The Ravens' season ended Saturday with a 17-3 loss to the Buffalo Bills in an AFC divisional round game.
"Mike is an excellent defensive mind who is highly respected across the NFL," Jim Harbaugh said in a news release. "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."
In Ann Arbor, Macdonald replaces Don Brown, who was dismissed in December after five seasons. The Wolverines went 2-4 in 2020 and surrendered 34.5 points per game.
"It is an honor to join Coach Harbaugh's staff at the University of Michigan," Macdonald said. "I firmly believe in his vision and am excited to get to work. 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."
Before he started coaching Baltimore's linebackers in 2018, Macdonald was a defensive assistant for two seasons in 2015-16 and a coaching intern in 2014.
Prior to joining the Ravens, he worked for three seasons under head coach Mark Richt at his alma mater Georgia from 2011-13.
--Field Level Media