Chris Ballard wanted the Indianapolis Colts’ defense to get younger and faster this offseason. Through five games, that idea has not translated into a better run defense.
Last season, the Colts were only a middling headache against the pass, but they held up well enough at the line of scrimmage to keep opposing ground games in check. Only two running backs topped 100 yards against them in 2025, and Indy lost both of those games.
This year, that problem has already shown up three times. Three backs have gone over 100 rushing yards against Lou Anarumo’s defense, and those are the Colts’ three losses.
The numbers tell the story fast. In 2025, Indianapolis allowed 102 rushing yards per game and 3.9 yards per carry, both good for seventh and third in the league, respectively. This season, those figures have jumped to 130 yards per game and 5 yards per attempt, which puts the Colts 28th in the NFL in both categories.
There are a couple of explanations, though neither fully excuses the drop-off. One is game script.
Indy’s offense was strong enough last season to build leads, which could push opponents away from the run and make the defense look better than it really was. But that doesn’t explain the full-yard spike in yards per carry, and opponents are actually running about as often as they did a year ago.
They’re just doing much more damage with those attempts.
The other caveat is that the 2026 numbers were dragged down by two ugly outings in Weeks 1 and 2. The defense looked much better in victories over Houston and Washington.
Even so, those offenses were both described as weak and decimated, and Week 5 against Pittsburgh offered a more honest test. The Steelers were not able to expose the Colts’ run defense in a new way; they just brought it back to the same issues that showed up in the first two weeks.
At some point, the simplest answer is the right one: the personnel is not as good against the run as the group from last season. And several of the changes Ballard and Anarumo made cut directly against their stated goal.
The Colts kept their perimeter corners, so the discussion starts inside. Of the nine defenders who operate in more central roles, five from last year are gone. Among the departures were Kwity Paye, Kenny Moore and Nick Cross, all of whom were strong against the run.
The logic made sense on paper. Paye did not bring enough pass rush, Cross was weak in coverage, and Moore was getting older.
But that tradeoff has hurt Indianapolis where it matters most in this discussion. The replacements have not matched that run-stopping value.
Justin Walley and AJ Haulcy have both struggled in every phase so far. Both are young, and both have shown signs of progress, but right now they are liabilities versus the run compared with the players they replaced.
Arden Key stepped into Paye’s spot, and he has been older and worse against the run. That was always a temporary fix, with Jaylahn Tuimoloau, Caden Curry and/or George Gumbs expected to take over eventually. For now, though, none of them has given the Colts the kind of run defense they need.
Up front, the middle of the line was supposed to be a place where Indianapolis could stay steady. Instead, Ballard kept DeForest Buckner and Grover Stewart in place, and neither has been especially reliable against the run this season.
Buckner’s drop-off stands out most. He is still the centerpiece of the defense, and he still makes plays, but his Pro Football Focus grade against the run is the lowest of his career.
That fits what the eye test is saying. Buckner has not been the same force he was before, and through five games he is averaging fewer than two solo tackles per game for the first time in his career.
The Buckner issue sits alongside another move that hasn’t helped: instead of replacing Neville Gallimore with a younger, faster body, Ballard signed 30-year-old Jerry Tillery, who is currently 132nd out of 133 defensive tackles against the run. Only New Orleans’ Nathan Shepherd keeps him out of the basement.
Linebacker was always going to be central to the conversation, and that’s where the Colts tried to remake things in earnest. Zaire Franklin and Germaine Pratt were out of favor last year, so Indianapolis added Akeem Davis-Gaither in free agency and drafted CJ Allen and Bryce Boettcher in Rounds 2 and 4 last April.
Davis-Gaither has been solid and leads the team in tackles by a wide margin, but it is fair to wonder whether he has really been an upgrade over Franklin. The younger players have not made a big enough impact yet.
Allen, Boettcher, Jaylon Carlies and Austin Ajiake have combined for 58 tackles. Miami rookie Jacob Rodriguez, who was drafted a few spots ahead of Allen, has one more tackle than that by himself this season.
And then there’s the part that makes the personnel story even harder to sort out: Ballard just brought Germaine Pratt back.
There is still room for growth here. Walley, Haulcy, Boettcher and Allen could get better as the season moves along, and maybe that turns into the younger, faster defense the Colts were chasing. But that kind of improvement needs to show up soon.
If it doesn’t, 2026 is going to look a lot like another season in which Indianapolis falls short.
The schedule offers one immediate chance to clean some of this up. The Colts play Tennessee this Sunday, and the Titans have a weak running game that Indianapolis handled pretty easily last year.
The catch, of course, is that last year’s results do not carry much weight now. Early on, this defense has not looked nearly as effective against the run, no matter how young and fast it is supposed to be.
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