
Linebackers coach Kelvin Sheppard of the Detroit Lions
Kelvin Sheppard Takes Over as Detroit Lions Defensive Coordinator, Aims to Build on Success

The Detroit Lions are ushering in a new era on defense, with former linebackers coach Kelvin Sheppard stepping into the role of defensive coordinator. Sheppard, who has been a key part of the Lions’ coaching staff for the past four seasons, is taking over after Aaron Glenn departed to become the head coach of the New York Jets.
For Sheppard, this promotion is more than just a title change—it’s an opportunity to elevate a unit that has been steadily improving. Throughout his tenure in Detroit, Sheppard has studied Glenn’s strategies closely, even going so far as to analyze game film and make his own play calls to better understand his mentor’s defensive philosophy. Now, as the man in charge, he’s committed to both continuity and innovation.
“We have a lot of players who have been in this thing now a few years, and I owe it to them to keep as much of this the same as I can,” Sheppard said. “But I also owe it to them to raise the standard.”
Maintaining and Enhancing a Strong Foundation
Detroit’s defense took a major step forward in 2024, allowing just 20.1 points per game—seventh-best in the league. This was an impressive feat considering the team battled numerous injuries, including a season-ending fractured leg for star pass rusher Aidan Hutchinson in October. With Hutchinson expected to be fully healthy in 2025, Sheppard’s defense has the potential to be even more formidable.
While the core philosophy of the defense will remain intact, Sheppard hinted at making subtle changes that will make the scheme even more effective.
“I want our players to feel something different … because it will be different,” Sheppard said. “I think everybody is going to be happy about the little changes that we are making.”
Strong Player Support
Sheppard’s promotion has been met with widespread approval within the locker room. Defensive leaders such as Hutchinson and linebacker Alex Anzalone voiced their support, but Sheppard was particularly touched when quarterback Jared Goff, along with offensive standouts Amon-Ra St. Brown and Jahmyr Gibbs, reached out with congratulations.
“I’ve always believed Shep could be an outstanding coach,” said head coach Dan Campbell. “This is the next step. … He’s ready.”
A Vision for the Future
As Sheppard transitions into his new role, his approach is clear: create a defense that appears complex to opponents while remaining simple for his players to execute.
“They know what I’m looking for,” Sheppard said. “They know what I want.”
However, he also acknowledges the need for adaptability, ensuring that the defensive scheme maximizes the strengths of the players on the field.
“You have to adapt and conform to the players,” Sheppard added, a lesson he learned directly from Glenn.
A Confident Endorsement
While Glenn is now leading a team of his own in New York, he remains confident that the Lions’ defense is in capable hands.
“I have a lot of confidence in that man,” Glenn said. “I think he’s gonna do a hell of a job.”
As Sheppard prepares for his first season as defensive coordinator, all eyes will be on how he continues the Lions’ defensive resurgence. If his track record and the belief of those around him are any indication, Detroit’s defense could be in for another leap forward in 2025.