The Steelers used a sixth-round pick in the 2026 NFL Draft on Gabriel Rubio, a Notre Dame defensive lineman whose profile never quite settled into a clean scouting consensus. That kind of uncertainty is exactly what can make a late-round swing so interesting. Rubio spent five seasons with the Fighting Irish and played in 39 games, but injuries wrecked what was supposed to be his senior-year showcase, limiting him to six contests and five starts.
Even with that uneven college resume, Pittsburgh may have landed a player whose upside outpaces the draft slot. The hope inside the organization is straightforward: Rubio develops into more than a depth piece and eventually forces his way into a starting role on the defensive line.
There’s a clear NFL template that could fit what the Steelers are trying to build with him. Veteran defensive tackle DJ Reader has carved out the kind of long career Pittsburgh would love to see Rubio chase, and there are a few traits that make the comparison easy to understand.
At 6-foot-5 and officially over 300 pounds, Rubio brings length that jumps off the page. He’s not built like a heavy, lumbering interior lineman; instead, he carries a sleeker frame and moves faster than his size might suggest. When he’s right, that combination shows up in the way he plays through contact and gets after the ball.
The biggest weapon is his reach. Rubio can use his long arms to knock blockers off balance and keep working toward the play, which made him especially useful against the run at Notre Dame. Pittsburgh is banking on that same trait translating to the next level.
That length also gives him a chance to affect quarterbacks at the line of scrimmage. The Steelers already have a defensive front known for getting hands up and disrupting throws, and captain Cam Heyward has batted down 17 balls at the line of scrimmage over the past two seasons.
If Rubio is going to win a roster spot as a rookie, or even hang around on the practice squad, the run game is where he has to prove himself. That’s the lane Reader has used to stay relevant for so long, and it’s the lane Rubio needs to own if he wants to make a name for himself in the NFL.
He fits the kind of player you can imagine using in subpackages built to stop the run, but there’s still work to do. The biggest lesson is simple: he has to get better at playing low. “low-man wins” is the standard, and that was one area where Rubio struggled in college. In the NFL, pad level and leverage decide a lot of battles.
Still, the raw ingredients are there. With his athleticism and some coaching, Rubio has a chance to become a useful piece in Pittsburgh. The road is long, but the Steelers are hoping they found a diamond in the rough.
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