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Dr. Brian Duncan has been training in martial arts for 3 decades. He currently holds a 5th degree black belt in SGC Karate & Kickboxing and a purple belt in BJJ. Coach Brian also has a 2nd degree black belt in Koei-Kan Karate and a black belt in Wing Chun.

Tom Clerici is a BJJ black belt having trained under Professor Steven Bongiorno, Professor Jay Regalbuto, and Professor Chris Massie. He has prepared world-class competitors for ADCC World Championships and Trials, IBJJF World and Pan Championships, EBI Invitationals and many local and national tournaments.

Kayla Zickler joins the Duncan MMA staff with over 6 years of coaching experience and over 20 years of wrestling experience. She is a 2012 Pan American Junior Championship in the women’s freestyle 51kg class.

Kailey Duncan is a co-owner of Duncan MMA, a Brazilian Jiu Jitsu Blue Belt, and the Head Women’s Jiu Jitsu Coach. She also serves as an assistant instructor in our Kids BJJ program, helping develop strong fundamentals, discipline, and confidence in young athletes.

Sophia Duncan is a Brazilian Jiu Jitsu Blue Belt and holds a Purple Belt in SGC Karate & Kickboxing. At just 16 years old, she is already an active competitor and dedicated member of the Duncan MMA team.

Coach Reese brings a strong wrestling background and a passion for athlete development to Duncan MMA. With over a decade of wrestling experience, he focuses on teaching the technical foundations of wrestling while helping students build the discipline, work ethic, and mental toughness needed to succeed both on and off the mat.

Coach Octavian Mathis is one of the wrestling coaches at Duncan MMA, working with both our elementary and middle/high school wrestling programs. With a strong competitive background and a passion for developing young athletes, he focuses on helping students build solid fundamentals, mental toughness, and confidence on the mat.

Coach Michael Dominguez is a military veteran with over a decade of martial arts experience and a lifelong commitment to disciplined training. His background reflects both technical depth and real-world toughness, shaped by years of service and high-level competition. He brings structure, intensity, and accountability to every class he leads.