Dimension 21 Basketball Training
Founder of Dimension 21 Basketball Training, author of "Never Be Afraid", and player development specialist based in Lilburn & Atlanta, Georgia.
The Architect — 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.
His coaching and training career took root in Raleigh, North Carolina. Taking over a basketball program that hadn't won a single game the previous year, he implemented a rigorous standard: mechanical discipline, high-IQ decision drills, and mental fearlessness. Within a single cycle, that winless team fought all the way to the State Final Four — proof of what is possible when an athlete commits to precision over hollow hustle.
Now centered in Gwinnett County, Georgia, Dimension 21 mentors elite middle school, high school, collegiate, and combine-bound athletes with systematic biometric evaluations and mental training.
From public courts to a platform
- Raleigh, NC
- Took over a program that hadn't won a single game the previous season
- Culture Shift
- Implemented mechanical discipline, high-IQ decision drills, and mental fearlessness
- Final Four
- That winless team fought all the way to the State Final Four in a single cycle
- Gwinnett, GA
- Now mentors middle school, high school, collegiate, and combine-bound athletes
- Author
- Published "Never Be Afraid" — the elite athlete's blueprint to unbreakable confidence
Hustle is the baseline; precision is how you win.
The facts
- Based
- Lilburn & Atlanta, Georgia (Gwinnett County)
- Founder
- Coach Antoine Quinnie — player development specialist
- Author
- "Never Be Afraid" — mindset & confidence blueprint
- Athletes
- 4,470+ athletes coached
- Result
- State Final Four contender coach
- Precision
- 100% mechanical audit precision