Detroit Lions defensive coordinator Kelvin Sheppard said “something has to change” after Detroit’s defense ranked last in the NFL through four games, according to NFL.com. The Lions have allowed a league-worst 423.8 total yards per game and rank second-worst in scoring defense at 31.8 points per game this season.
Sheppard’s comments came after Detroit’s 32-26 loss to the Carolina Panthers on Sunday night, a game in which Carolina piled up 445 total yards. The Lions have allowed at least 30 points in three of their first four games in 2026, the first time that has happened since their 0-16 season in 2008, according to NBC Sports.
Kelvin Sheppard: Lions Defense Change Needs To Happen
Sheppard did not soften his message when discussing the unit he oversees. “Because at this point, all of it is lip service,” Sheppard said, according to NFL.com. “Until it starts to show on Sunday, until the evidence starts to show up at the game, it’s lip service.
What we do here, bridging it to the game, it sounds good, but it’s lip service. So, what I will say is we did not play well enough defensively to help this team win that football game Sunday night at Carolina.”
Sheppard went further when asked what needs to happen next. “There has to be real change,” he said. “There has to be real evidence of change, whether that’s personnel-driven, whether that’s some things, whatever the case is, something has to change.”
The coordinator did not specify what form that change would take, leaving open whether it involves scheme, personnel or both.
What It Means: Secondary Identified As The Problem
Sheppard pointed to the secondary as the source of Detroit’s defensive collapse rather than the defensive line. “I told the D-line, ‘It’s a disservice what we’ve been doing to you all,'” Sheppard said, according to NFL.com. “I truly feel like this is the best D-line we’ve had in my six-year tenure here since I got here in 2021, and we haven’t been complementing it well enough on the back end to see the results of it and be outright beneficiaries.”
That assessment lines up with the numbers. Detroit’s defensive line ranks second in the NFL with 75 quarterback pressures through four games. Aidan Hutchinson has 28 pressures, second in the league, and Alim McNeill has 15, tied for fourth among defensive tackles. Despite that production up front, Detroit has allowed a touchdown on 40.5% of opponents’ possessions in 2026, the highest rate allowed by any team in a season since at least 2000.
Context: A Second Straight Down Year On Defense
This marks the second consecutive season Detroit’s defense has been a liability. Former defensive coordinator Aaron Glenn built the unit into a top-10 group before leaving to become head coach of the New York Jets. The Lions went 15-2 under Glenn before falling to 9-8 in Sheppard’s first season running the defense.
Sheppard has held the job since 2021, meaning his six-year tenure in the organization extends into 2027. Head coach Dan Campbell addressed the defensive struggles separately, telling reporters he is not considering a wholesale overhaul. “I’m not talking about all that,” Campbell said, according to NBC Sports.
“I’m talking about getting better right now with what we got and that’s what we’re going do. We’re going to find a way to get better with what we got.” Campbell also said he is not considering firing Sheppard.
What’s Next
Detroit’s defensive performance will face its next test when the Lions host the Arizona Cardinals. Whether Sheppard’s call for “real change” translates into lineup or scheme adjustments by that game remains to be seen based on what has been announced so far.
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