Common questions
Who is Coach Antoine Quinnie?
Coach Antoine Quinnie is the founder of Dimension 21 Basketball Training, author of "Never Be Afraid", and a player development specialist based in Lilburn & Atlanta, Georgia.
What is the D21 Framework?
The D21 Framework is a systematic, 4-pillar system: Cognitive Court Mapping, Biometric Tuning, Live Simulation, and Data-Driven Feedback — designed to optimize cognitive spatial mapping and physical output.
What levels do you train?
Dimension 21 mentors elite middle school, high school, collegiate, and combine-bound athletes.
What is the 21-Dimension Audit?
We break down your release angle, pickup point, defensive stance width, and hip mobility on high-speed video to eliminate bad habits.
How do I book a training evaluation?
Reach out via the contact page or email dimension21basketball@gmail.com for evaluation availability, scheduling, and facility access details.
What products are available?
The "Never Be Afraid" blueprint ($9.99), the Court IQ Masterclass ($149), the PES Vertical Explosion Protocol ($449), and the "Never Be Afraid" book ($9.99).