Background

R Mason Thomas was born in Fort Lauderdale, Florida, to a football family: his father, Harvey, played defensive end at Florida in the early 1990s before a moped accident broke his leg and cut short his career. The "R" in Thomas's name doesn't stand for anything; it's a tradition from his mother's side of the family, where names beginning with R span several generations. He attended Cardinal Gibbons High School, ran the 100, 200, and 400 meters on the track team, and helped the Chiefs win back-to-back Florida 4A state football championships in 2020 and 2021. A four-star recruit who originally committed to Iowa State, he flipped to Oklahoma on National Signing Day 2022 when new defensive line coach Miguel Chavis made him the first edge rusher he offered. Thomas then missed a combined seven games across his first two seasons with high-ankle sprains on each ankle. His 2024 breakout, nine sacks, 13 games healthy, earned him the nickname "The Closer" from Sooner fans for his big late-game plays. He earned All-SEC First Team honors in 2025, added 6.5 more sacks in 10 games before a quad injury, and declared for the 2026 NFL Draft.

Physical Attributes

RAS:

There is not a single physical measurement over the bottom 16th percentile anywhere on Thomas' body. He is not just small, but nearly a total outlier in how small he is. His speed, bend, and agility are fantastic and are his only hopes of making an NFL career as an EDGE.

Data and Tape Analysis

If you are unfamiliar with my EDGE radar charts, you can find more information here

One thing that infuriated me about Thomas was his tackling ability. He looks like a tackle fluffer out there, setting it up so someone else can get the job done. I am sure his small arms do not help with that, but it happened often enough that I had to lead with that.

Otherwise, R Mason Thomas is a pure speed rusher. Bends around the outside with ghost rushes, bull slips where he smacks a tackle's arms away and runs the hoop, and brief hesitation moves add up to an effective arsenal. When he wins, it usually happens quickly, and once he knows how to win, he uses that information against his opponent.

Everything that Thomas will be worth in the NFL comes from his pass rushing abilities. That is because he is also a very average run defender. He gets swallowed up and easily moved by linemen when blocked, but when he can stay free has excellent pursuit.

Thomas also has some decent movement skills in space, and through some work, could learn to become an acceptable cover player. However, that would probably highlight his tackling even more, and take away from the one thing it is apparent right now he can do, so that might not be as enticing an option as it looks at first glance.

Grade and Outlook

R Mason Thomas tries as hard as he can to overcome his size. Though I am not sure he will ever be able to fully transcend it. He will have value as a DPR, and some enterprising coaching staff may try to move him to a full time OLB role. Still, pass rush juice is uber valuable, and you always take a swing at someone who could be a sack merchant in the league.

Grade: 5.6 ( Late 2nd Rounder / Early 3rd Rounder)