Colorado spent the offseason trying to remake its defense, but the question hanging over Thursday’s opener at Georgia Tech is still the same one from a year ago: can the Buffaloes stop the run?
Deion Sanders turned over a lot of the personnel around that unit. There’s a new coordinator, a new front and a linebacker group that was rebuilt mostly through transfers.
Even so, the issue that kept biting Colorado last season never really went away. The Buffs gave up 222.5 rushing yards per game, which ranked 135th nationally, and that weakness gets tested right away in the rematch with the Yellow Jackets.
That matchup carries extra weight because Georgia Tech exposed the problem in last season’s opener. The Yellow Jackets ran 47 times for 320 yards in a 2720 win at Folsom Field, and now the same opponent is the first real measure of whether Colorado’s defensive overhaul has done enough.
A lot has changed up front. Colorado defensive coordinator Chris Marve was promoted from linebackers coach in February after Robert Livingston left for a defensive pass game coordinator role with the Denver Broncos. Marve inherited a unit with only a small group of returning scholarship defenders, and the front has been almost completely rebuilt around him.
The turnover was dramatic. Arden Walker signed as an undrafted free agent with the Minnesota Vikings, Keaten Wade got a Kansas City Chiefs minicamp invitation, and former defensive line coach Domata Peko moved on to the Pittsburgh Steelers. Colorado answered by bringing in 12 defensive linemen and edge rushers through the transfer portal, with Dante’ Carter now coaching that room.
That’s where the first real battle begins. Colorado doesn’t just need bodies - it needs the line to keep blockers off the linebackers and prevent Georgia Tech from turning ordinary runs into big gains.
Ezra Christensen was supposed to be part of that solution. He came in after posting 11 tackles for loss and six sacks at New Mexico State last season, and Colorado clearly expected him to help in the middle. But a judge denied the preliminary injunction he needed to play this season on Aug 24, forcing the Buffaloes to adjust again.
That leaves Santana Hopper, a Tulane transfer, and Dylan Manuel, who came from Appalachian State, in line for bigger roles in the interior rotation. Tyler Moore, a Coastal Carolina transfer, and nose tackle Samu Taumanupepe could also see more snaps. That’s a lot to sort through against a Georgia Tech backfield that still has Justice Haynes, a Michigan State transfer, and Malachi Hosley ready to carry the load.
There is one major difference from the game last season, though, and it matters. Haynes King was the engine for Georgia Tech’s ground attack in that opener, accounting for 156 of the Yellow Jackets’ 320 rushing yards and scoring three times. He’s gone now, with Indiana transfer Alberto Mendoza stepping in after never starting a college game.
That changes the shape of the challenge, but not the importance of it. Colorado can focus more directly on Haynes and Hosley, yet the Buffs still have to win at the line of scrimmage. If Georgia Tech can run the ball and stay ahead of the chains, the new quarterback won’t matter much.
The best answer may be the group behind the defensive front. Gideon Lampron arrived from Bowling Green with 119 tackles, 17.5 tackles for loss and first-team All-MAC honors after the 2025 season.
Liona Lefau brings two seasons of starting experience from Texas, and Tyler Martinez transferred in from New Mexico State. Sanders has said he sees three pros in that room, and all three should give Marve more speed and more experience behind the rebuilt front.
Marve will also handle the defense from the sideline rather than the booth, which should keep him closer to the linebackers between series. That setup gives him a chance to fix a bad fit or missed assignment before the next drive starts.
Colorado’s camp also offered a useful dress rehearsal. The defense spent every day going against Brennan Marion’s Go-Go offense, a scheme that demanded gap discipline and forced linebackers to track multiple run threats. Georgia Tech is different, but the lessons on communication and eye discipline still apply.
Lampron said those reps mattered.
“They definitely have us prepared for anything we can see,” Lampron said. “It is one of Coach Marve’s biggest focuses.”
For Colorado, the formula is simple enough on paper: hold the point of attack, keep Lampron and Lefau clean, and make Mendoza throw from longer downs instead of letting Georgia Tech control the game on the ground. Thursday will show quickly whether that offseason makeover actually changed anything.
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