The Detroit Lions defense was not good in 2021. In fact, they were amongst one of the worst defenses in the league by just about any statistical measure you want to use.
But given the personnel he was dealt, defensive coordinator Aaron Glenn continues to earn wide praise for his efforts. Under his wing this season, the Lions saw significant progress from players like Charles Harris, Jalen Reeves-Maybin, Alex Anzalone, and Amani Oruwariye. We also saw unexpected production out of undrafted rookies Jerry Jacobs and AJ Parker.
Additionally, Glenn helped create game plans that stopped Lamar Jackson and Kyler Murray in their tracks, which was noticed by other teams in the NFL and had Glenn receiving phone calls for insight.