The Steelers walked out of Week 5 with a convincing win over the Colts, and most of the attention went where you’d expect. Jaylen Warren put on a show with an 80-yard touchdown reception and a 50-yard TD run. Aaron Rodgers also drew praise after becoming the first Steelers quarterback since Terry Bradshaw in 1982 to throw three passing touchdowns in three straight games in the same season.
But tucked inside that win was another performance worth noticing: rookie defensive tackle Gabriel Rubio made his NFL debut and looked like a problem for Indianapolis.
Rubio, Pittsburgh’s sixth-round pick in the 2026 NFL Draft, had already made the initial 53-man roster, but he didn’t get into a regular-season game until Week 5. His chance came after Derrick Harmon went on IR this past week with a foot injury, opening the door for Rubio to be promoted to the active roster.
He made the most of it.
In his first regular-season action, Rubio was part of a Steelers run defense that simply smothered the Colts. He played 14 total snaps, with 10 coming against the run. On those 10 run-defense snaps, Indianapolis never picked up more than two yards on a carry with Rubio on the field.
Here’s what that looked like in sequence for the Colts:
2 yards.
-1 yard.
1 yard.
0 yards.
0 yards.
2 yards.
1 yard.
-2 yards.
2 yards.
2 yards.
That’s about as clean as it gets. With Rubio on the field for those 10 run snaps, the Steelers allowed just 7 rushing yards on 10 carries, or 0.7 yards per carry. When he wasn’t out there, Pittsburgh gave up 59 yards on 14 carries, a 4.2-yard average.
There is some context here. Rubio’s reps came mostly in third- or fourth-and-short situations, so the Colts weren’t really attacking the defense in a way that invited explosives. And Pittsburgh did give up a touchdown to Tyler Warren on a sneak on one of the snaps Rubio played.
Still, the rookie showed exactly what the Steelers needed from him.
He didn’t do much as a pass rusher on his four pass-rush snaps, but in the run game he was stout at the point of attack and active when it came time to slide laterally and chase the ball. At 6-foot-5 and 321 pounds, Rubio held his ground, and the tape backed up the numbers.
He was credited with only one run stop, but he finished with three tackles on those 10 run-defense snaps, a strong sign of how often he was in the middle of the action. The Steelers’ All-22 review only strengthened the case that he was one of the game’s quiet standouts.
The grading numbers reflected it too. Rubio finished as the third-highest-graded Steelers defender in Week 5, posting a 68.8 overall PFF grade behind only Jalen Ramsey and Yahya Black.
That’s a notable start considering the assignment. Jonathan Taylor is not the kind of back who usually gets swallowed up, yet he managed only 45 yards on 15 carries against Pittsburgh in what turned into one of the least productive full games of his NFL career.
The sample was small, and the situation helped shape his usage, but Rubio still flashed in a big way. With Harmon out for the foreseeable future, the Steelers should get another look at what they may have found.
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