Mason Grivna is a 6’10” post prospect from Ballard High School in Louisville, Kentucky, competing with Louisville Magic on the grassroots circuit.
A member of the 2029 graduating class, Grivna already presents college level size with developing skill and coordination.
He impacts the game as a true interior presence, using length, touch, and positional awareness to influence both ends of the floor.
Offensively, he scores efficiently around the rim, finishes through contact, and shows soft hands catching in traffic.
His footwork continues to improve, allowing him to seal defenders and create angles in the paint.
Defensively, Grivna alters shots simply by being present, using verticality and timing to contest without fouling.
He rebounds his area consistently and shows willingness to outlet and initiate transition opportunities.
As he matures physically, Grivna’s upside becomes increasingly intriguing.
He runs the floor well for his size, communicates defensively, and shows an understanding of team concepts.
His presence draws attention from opposing defenses, opening spacing opportunities for teammates.
Continued development of strength, mobility, and offensive counters will elevate his overall impact.
College Projection:
Mason Grivna projects as a long term high major or strong mid major frontcourt prospect if development continues on its current trajectory. His size alone makes him a priority evaluation, and his steady skill progression supports future college minutes.
Evaluation Summary:
Grivna combines legitimate size, developing touch, and defensive awareness. His physical tools and improving feel project well to structured college systems that value rim protection and interior efficiency.
Key Development Areas:
Skill improvement needs: expanding post counters and short corner shooting Physical or athletic targets: added lower body strength and lateral mobility Mental or consistency areas: asserting offensive presence for longer stretches
Long-Term Outlook:
Mason Grivna has the frame, mindset, and trajectory to become a college program cornerstone in the frontcourt.