Louisville’s defensive staff is building this thing the old-fashioned way: long nights, hard conversations and a whole lot of ideas getting thrown on the board.
But the Cardinals are also trying to make that same defense feel fresh, fast and hard to figure out heading into the 2026 season. That’s the balance head coach Jeff Brohm wants, and it’s the lane co-defensive coordinators Steve Ellis and Mark Ivey are trying to drive down.
Ellis, in his first year at the Power Four level in that role, laid out the philosophy plainly: “We want to be tough. We want to be physical.
We want to be direct and honest - old-school,” Ellis added. “But new-school, we want to be on the cutting edge.
We want to be innovative. We want to be doing stuff where people watch and (say), ‘Man, let me rewind the tape again.
Did I just see that?’ Yes, you just saw it.”
That work has been underway since January, inside the Cardinals’ football facility, where there’s apparently always at least one light burning late into the night. The defensive staff includes 14 coaches whose experience ranges from a second-year graduate assistant to coaches with more than 30 years as defensive coordinators and head coaches.
The point, Brohm’s point, is not hierarchy for hierarchy’s sake. It’s finding cleaner answers, simpler answers, and making the defense better.
Ivey brings the kind of old-school edge that shows up in how he talks about getting to the ball. He also brings familiarity.
He was Louisville’s defensive line coach four years ago under a different staff, when Bryan Brown was the defensive coordinator. Brown is now at Ole Miss, but that earlier group helped produce one of the program’s most productive defenses in 2022, when Louisville tied a program record with 50 sacks and also finished with 97 tackles for loss, 15 interceptions, 18 forced fumbles and 15 fumble recoveries.
The structure around the defense has changed since then. When Brohm arrived that offseason, Louisville shifted from a 4-3 to a 4-2-5 base. Now the Cardinals are layering in new wrinkles on top of that foundation.
For Tennessee transfer safety Kaleb Beasley, one of the biggest differences is how the defense lets him see the action unfold.
“The defense here, we have a lot of vision on the quarterback, so I feel like it's easier for us to make plays,” Beasley said. “My defense last year, it was the zone. We played a little bit of man, so it's kind of the same, but we just didn't have as much eyes on the quarterback as I do here.”
The staff itself is new in plenty of places, too. Ellis and Ivey are both serving as co-coordinators at this level for the first time.
Safeties coach Brandon Sharp, linebackers coach Adam Mueller and defensive tackles coach Jontavius Morris are also first-timers in their current roles at this level. Louisville added Morris, Derrick Jackson, former Western Kentucky head coach David Elson and Me’Leick Miles in February.
A recent NCAA rule change has made the whole operation a little more fluid. Since 2024, staff members have been allowed to provide “coaching instruction during practice and games,” which gives Louisville more hands on deck. That matters for Ivey, who will be calling plays for the first time in his career and can lean on other coaches to handle his position group on game days.
“We've got five different guys working with the defensive line, all of them capable of being the D-line coach,” he said. “So they're going to do the brunt of that work on game days so that I can focus on trying to give our unit the best possible call to hopefully line up and play quick football, play fast football.”
There’s also a strong thread of familiarity running through the room. Jackson was on Brohm’s first staff at Purdue. Miles and Morris were both part of Brohm’s orbit as graduate assistants and quality control assistants at Purdue and Louisville.
And then there’s safeties coach Brandon Sharp, who has Mike Cassity on staff - his former position coach and the Cardinals’ defensive coordinator during Bobby Petrino’s first stint at Louisville. Cassity’s defenses finished in the top 40 nationally every year from 2003 through 2006, and those units helped power the program’s first 12-win season in 2006.
“He's always in my ear giving me advice, telling me when I'm doing good and bad,” Sharp said of Cassity. “So it's been good to have him around. And as a staff, it's good to have him around because he does bring up valid points to little, small details that we overlook at times.”
That kind of detail is exactly what Louisville believes can turn a good defense into something bigger.
The Cardinals think this group has the ingredients to be special. The NCAA’s new 5-for-5 rule means Louisville could bring back as many as six starters, and that doesn’t even include the transfer additions.
Of the 15 newcomers, nine have started before. The talent is there, the experience is there, and the staff believes the only thing left is time together - more meetings, more late nights, more tweaking until the weekly plan feels right.
“It’s a big family in there; we get after each other. We bounce ideas on the board,” Ellis said. “At the end of the day, we're trying to get the best plan possible for our guys to go play fast, go play physical and put (out) the best product we can.”
In Other News...
Louisville Defense Is Starting To Change The Mood Around This Team
Louisvilles second fall camp scrimmage offered a clearer picture of what this team might be able to hang its hat on this fall. After a first scrimmage that left room for concern, the defense came back with a much sharper performance, and head coach Jeff Brohm came away pleased with how efficiently that side of the ball operated. The Cardinals were better at taking away explosive plays, and the unit also started to show the kind of disruption that can change the feel of an entire practice.
For a program trying to build confidence heading into the season, that matters. Louisvilles defense has a mix of returning players and transfers, and the early signs suggest there is enough talent there to become a real strength rather than just a supporting piece. Brohms biggest takeaway was the defenses ability to control the scrimmage, and if that level of play holds, it could go a long way toward reshaping how this team is viewed. [Read more 🡒]
Louisville Added A Proven ACC Guard With One Big Catch
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For Louisville, the appeal is obvious: Trimble brings experience, production and leadership to a program that will value all three when the time comes to reshape its lineup. The catch is simply the timing, since this is a commitment aimed at the 2026-27 season, leaving the Cardinals to keep building around a player whose impact is still a ways off. [Read more 🡒]
Lincoln Kienholz Is Giving Louisville Real Hope Ahead Of Ole Miss
Louisvilles build toward its 2026 opener against Ole Miss has a lot to do with what it is seeing from Lincoln Kienholz in fall camp. The former Ohio State transfer and four-star recruit has drawn positive reviews from Jeff Brohm, who pointed to the quarterbacks leadership, decision-making and ability to make plays with his feet as reasons the Cardinals feel better about the direction of the offense.
For a team facing a high-profile first test, that kind of progress matters. Brohm still has plenty to sort through before kickoff, but Kienholz is giving Louisville a real reason to believe it can enter that matchup with a quarterback who looks comfortable, confident and capable of handling the moment. [Read more 🡒]