Kelvin Sheppard heads into 2026 with a clear mandate: get the Lions defense back where it belongs.
His first season running the unit was uneven, and the numbers tell the story. Detroit slipped from the seventh-best defense in 2024, when it allowed 20.1 points per game, to the 11th-worst in 2025 at 24.3 points per game. That drop helped drag the Lions from 15 wins the year before to nine wins and no playoff berth last season.
Now Sheppard is entering his second year as defensive coordinator, and the expectation is simple - steady the group and help push Dan Campbell’s team back into the postseason.
The biggest swing factor is scheme flexibility. Last season, Detroit leaned too heavily on its standard 4-3 base look, even when opposing offenses called for something different. That’s where Sheppard can make the biggest jump in 2026: using the Lions’ hybrid defensive backs more often and putting the defense in a better spot against the NFL’s pass-heavy attacks.
There’s also a bigger-picture coaching adjustment in play. Sheppard needs to keep the defense functioning as one unit instead of treating the position groups as separate pieces. Campbell said during OTAs that he already sees progress on that front.
“I think he is much more comfortable,” Campbell said of Sheppard headed into his second season as coordinator. “I think he's got a much better grasp of how he wants it to look.
Now he's coaching all of it, he's coaching the front, he's coaching the backers and he's coaching the back end. He sees it all.
“And that's what happens when you're able to do it. You go through a season, you go through the practices, you kind of key and diagnose yourself as a play-caller and as a, 'Hey, this is where we can get a little bit better.’ I love where Shep is at right now.”
Sheppard is still a coach with room to grow, but Year 2 gives him a real chance to take a step. If he becomes more adaptable and squeezes more out of Detroit’s personnel, the Lions should be in strong shape to chase the NFC North title and get back to the playoffs in 2026.
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