Story & Lesson Highlights with Antoine Quinnie of Gwinnett

Antoine Quinnie shared their story and experiences with us recently and you can find our conversation below.

Good morning Antoine, it’s such a great way to kick off the day – I think our readers will love hearing your stories, experiences and about how you think about life and work. Let’s jump right in? What are you chasing, and what would happen if you stopped?
I’m building a legacy defined by the lives I uplift—through skills training, motivation, and the message in my book. Stopping isn’t an option, because every day I push forward, I might be the reason someone doesn’t give up.

Can you briefly introduce yourself and share what makes you or your brand unique?
My name is Antoine Quinnie—most people know me as Coach Q—and I’m the owner of Dimension 21 Basketball Training. For more than a decade, I’ve dedicated my career to developing student-athletes at every level, from middle school standouts to overseas professionals. My mission is simple: to elevate players not just athletically, but mentally and emotionally, so they can succeed on and off the court.
What makes Dimension 21 unique is our holistic approach. I combine high-level skill development with performance training, mental preparation, and personal accountability. I’ve been fortunate to work with and learn from some of the top minds and programs in the game, and I bring that experience back to every athlete I train.
Over the years, I’ve collaborated with elite programs such as the Chris Paul Elite Camp, Atlanta Dream Youth Camp, Phil Handy’s “94 Feet of Game”, T3I Sport NBA Combine Training, the Tony Delk Academy, the NBA G-League Skyhawks, USA Basketball, and more. Most recently, I served as the Head Trainer for Agnes Scott College Women’s Basketball for the 2023–2024 season.
I’m also committed to continuous growth. My certifications—USA Basketball Licensed Coach, CPT, PES, and CNC—reflect my belief that player development requires a 360-degree foundation. I’ve visited programs at Auburn, Duke, Oklahoma, Notre Dame, Georgetown, Georgia State, UNLV, UGA, Howard, and others to continue learning from the best.
At the end of the day, what drives me is impact. Every athlete I meet is an opportunity to change a trajectory, build confidence, and develop a leader. That’s the legacy I’m building through Dimension 21.

Thanks for sharing that. Would love to go back in time and hear about how your past might have impacted who you are today. What did you believe about yourself as a child that you no longer believe?
Growing up, I believed the sky was the limit. Today, I understand that my potential reaches far beyond the sky—and I refuse to doubt the ideas and thoughts that push me forward.

Was there ever a time you almost gave up?
Yes, there was a moment when I wanted to give up. When I moved back to Atlanta from North Carolina, I had no clients and nothing I tried seemed to work the way it had before. I felt stuck. Then, out of nowhere, I got a call to train a young kid who dreamed of becoming a starter on his team. That one opportunity reignited my purpose—and from that day forward, I haven’t looked back.

Next, maybe we can discuss some of your foundational philosophies and views? What are the biggest lies your industry tells itself?
One of the biggest myths in sports training is that it’s a quick path to wealth. It’s not. This industry is built on passion, patience, and genuine investment in the players you serve. You can make great money, but if money is the only reason you show up, athletes will sense it and find someone who truly cares—sometimes even someone with less talent or experience.

Okay, so before we go, let’s tackle one more area. What will you regret not doing? 
I don’t regret the hard work I put in each day. I understand that the results may not appear right away, but they always reveal themselves at the right time. I will never regret giving flowers to everyone who supported my journey — even when they couldn’t see the full picture. To my fans, friends, family, and to my wife Amber, thank you for believing in me.

Contact Info:

• Instagram: https://www.instagram.com/d21_basketball?igsh=MTY5eWppejNsNHBlcw%3D%3D&utm_source=qr