The Texas Longhorns hired Will Muschamp as their new defensive coordinator this offseason, and head coach Steve Sarkisian’s defense returns significant talent on that side of the football.

Pass rusher Colin Simmons, potential All-American safety Jelani McDonald, and a deep linebacker group give Muschamp plenty to work with. The question is whether the cornerback room can hold up its end of the bargain in what should be an aggressive, man-coverage-heavy scheme. If the corners can’t handle island assignments, the entire defensive identity could be in jeopardy heading into a season with national title expectations.

What a Muschamp defense looks like

If you follow Muschamp’s career as either a defensive coordinator or head coach, one thing is very clear: he has always valued being aggressive on the defensive side of the football. That includes playing a ton of man coverage on the back end and allowing that coverage to create a variety of pressure looks up front. The defensive line will move, twist, and stunt. Second-level pressures will be a staple.

This is a defense that lives and dies by man-to-man coverage and creating pressure from multiple spots.

With any new staff and different personnel, it’s always possible that Muschamp evolves his approach to fit this Texas group. But he has been such a successful defensive coordinator for so long that you should expect him to stick with what has made him a coveted name in the profession.

Where the fit is strong

Several parts of this Texas defense fit the Muschamp system well. Simmons and the talented defensive line coming back should be able to handle the volume of pressure looks Muschamp wants to create. Outside of nose tackle Ian Geffrard, who transferred in from Arkansas this offseason, this is a group that genuinely wants to play as an attack-style front.

The second level is athletic, too. While I do have some concerns about Pitt transfer Rasheem Biles as an all-around linebacker, there is no question that he is at his best when blitzing and getting downhill. His tackle-for-loss numbers while a member of the Pitt program only validate that opinion.

Ty’Anthony Smith, now entering his junior season, is a potential breakout candidate after playing good football a year ago. True freshman Tyler Atkinson, a 5-star recruit in the 2026 recruiting class, adds another dynamic piece. All three players fit what Muschamp wants to do at the second level of his defense.

The safeties are a strong spot as well, led by McDonald. That group should not be a concern.

The cornerback room gives me pause

In order for this defense to be the best version of itself, Texas needs to be able to play a lot of man coverage. That puts immense pressure on the cornerback position, which is where I have reservations heading into the fall.

Graceson Littleton and Kade Phillips both saw extensive playing time as true freshmen last season. They will now enter their sophomore years, and some natural ascension should be expected. But each player, especially Littleton, had a fair share of struggles a year ago. Littleton is projected to be the starting nickel, while Phillips will be one of the outside corners.

Both need to take a significant step forward to fulfill the Muschamp philosophy.

At the other outside corner spot, Texas went into the portal and brought in Bo Mascoe from Rutgers. While Mascoe has some appealing short-area explosiveness and general coverage ability, I believe he was slightly overvalued from a transfer portal perspective. At 5-11 without a ton of length and grading out as a below-average run defender, the transition to SEC competition as a potential No. 1 corner gives me extreme pause.

Perhaps a player like Kobe Black or Samari Matthews emerges to provide quality depth, and the room looks better than anticipated. But for the most part, I believe this will be a boom-or-bust group.

What happens if the corners can’t hold up?

If the cornerback room cannot consistently match up in man coverage, Muschamp faces a difficult decision. Does he play more zone? Does he get more conservative at times? That has not been a part of his strategy or philosophy during the entirety of his defensive coordinator career. Playing more zone would fundamentally alter what makes a Muschamp defense a Muschamp defense.

If you are not able to get the most out of those corners and trust them on an island, I have my concerns with how smooth this transition will be heading into 2026. Texas has national title expectations, and the cornerback room will determine whether this defense reaches its ceiling or falls short of it.