Mason Leak

Physical Profile

At 6-4 / 230, Leak has the prototypical ACC-edge frame with room to add 15-20 pounds without sacrificing his elite lower-body juice. His athleticism is verified, not projected: a 6-5 high jump (3rd at the New England Indoor Championship), 18-1 long jump, and 12.13 100m translate to real lower-body explosion (94 Explosion Score per NextGen Prospects) and the change-of-direction needed to flatten the corner. The build is muscular and powerful rather than lean-and-bendy, pointing to a power-rusher profile with developing length-and-leverage as his weight catches up to his frame.

Play Style

A power-over-finesse edge who attacks half-the-man and rams the corner rather than dipping-and-bending around it. On film he plays downhill, using his burst to close ground in a hurry and his strength to stack-and-shed in the run game, finishing as a violent, sure tackler. The athleticism shows up in pursuit and second-effort plays; the polish — converting his straight-line power into a multi-move rush — is the part still under construction.

Strengths

• Elite lower-body explosion confirmed by track credentials (6-5 HJ, 18-1 LJ) and a 94 Explosion Score — generates real power off the edge and can convert speed-to-power, exploding through contact to collapse the pocket corner
• Plays with violent hands and physicality at the point of attack; Andrew Ivins notes he 'can explode through contact and ram protection on the corner' and 'strikes as a tackler' who finishes in the backfield with authority — a genuine asset against the run, not just a pass-rush specialist
• Significant developmental ceiling — a muscular frame with room to grow, raw power, and multi-sport athleticism gives him one of the higher trait floors among 2026 edges in the Northeast (top-3 in CT)

Areas to Improve

• Pass-rush technique and counters — currently wins on traits (power/burst) over a developed plan; needs a refined rush arsenal (hand-fighting sequences, secondary moves, a reliable inside counter) to consistently beat ACC-caliber tackles
• Functional bulk and anchor — at 230 on a 6-4 frame he must add weight and play with more consistent pad level/leverage to hold up as a base-defending edge and avoid getting washed against the run at the next level

College Projection

Likely a developmental redshirt or rotational depth piece early at Boston College who needs a year or two in a college strength program to add functional weight before competing for a starting edge role. Realistic timeline is a meaningful rotational contributor by Year 2-3, with starter upside as the technique catches up to the tools. The transfer to Avon Old Farms (a prep powerhouse) for his senior year suggests a player and family investing in development against elite competition.

NFL Outlook

Developmental NFL traits exist — the explosion metrics and frame are the kind of athletic baseline that draws late-round/priority-UDFA interest if the pass-rush plan develops — but he is several steps of refinement away from a draftable projection. His ceiling is tied entirely to technical growth and added mass; the floor is a productive college rotational edge. Too early and trait-dependent to project meaningful draft capital today.

Best Fit

A 4-3 base scheme that lets him attack as a wide-9 or 5-technique edge and play downhill, where his explosion and power are weaponized rather than asking him to drop into coverage as a stand-up OLB. He fits a development-first program with a strong strength staff and a defined edge-rush plan — exactly the kind of patient, trait-banking projection Boston College has historically done well with along the defensive front.