Mallory played college football for the Michigan Wolverines under head coach Bo Schembechler from 1984 to 1987.
After 3 years in this position, including the 2007–08 National Championship season, Mallory was promoted to co-defensive coordinator.
Mallory spent the 2009 and 2010 seasons at the defensive coordinator at the University of New Mexico before being hired back to Indiana.
[3] On February 10, 2015, Mallory was introduced as a part of the coaching staff for Dan Quinn of the Atlanta Falcons.
[4] In the 2016 season, Mallory and the Falcons reached Super Bowl LI, where they faced the New England Patriots.
[5] On February 5, 2024, the Baltimore Ravens hired Mallory to serve as their defensive backs coach.