About United Thai Boxing and MMA

About United Thai Boxing & MMA

United Thai Boxing & MMA was established after the Triangle’s only Muay Thai-based training gym closed suddenly in 2012. We realized that no other gym in the Triangle area offered authentic Muay Thai-based training with the same frequency and quality. United Thai Boxing & MMA was created to fill this void for everyone from novices looking for a great kickboxing workout to professional Muay Thai and MMA fighters. We chose the name “United Thai Boxing & MMA” because our members are United by a love for Muay Thai, mixed martial arts and the desire to help each other improve through hard work.

We offer training through a combination of group classes, private instruction, and open gym hours. Our culture is built on:

  • Excellent, technique-focused instruction provided by teachers that have trained extensively in authentic Muay Thai, Boxing, Brazilian Jiu-Jitsu, Kickboxing, Wrestling and other mixed martial arts disciplines
  • Obtaining results through hard work
  • A community that encourages discipline, accountability and a sense of family regardless of your training goals

Our classes focus on teaching proper technique to all of our students, regardless of skill level. We welcome you to join us regardless of your experience or training goals. All that we ask of you is to train hard up to your current fitness and ability, but most of all just have FUN!

Come in and experience UNITED today! Contact us or learn more about a FREE TRIAL.
Boxing Classes


Anthony “Turbo” Bui

Head Instructor / MMA / BJJ

Martial Arts Experience:
1983–1988 Discipline: Vo Vi Nam Sifu: Van Binh – Houston, TX
1988–1992 Discipline: HS Wrestling Coach: David Shcultz – Huntington Beach, CA
1992–1994 Discipline: College Wrestling/Golden West College & Cal State Fullerton Coach: Mike Gremlin & Tim Maddox – CA
1996–1998 Discipline: Sanshou Sifu: Xian Liu – Mobile, AL
1996 –1998 Discipline: Sanshou & Muay Thai Coach: Mike Altman – Houston, TX
1997–1998 Discipline: Brazilian Jiu Jitsu Professor: Saul Soliz – Houston, TX
1999–2001 Discipline: Muay Thai Coach: Scott Francis – Garner, NC

Teaching Experience:
1996-2001 Assistant Coach – Sanshou & MMA at Houston Kickboxing Gym –Houston, TX
2007–2009 Assistant Coach – Kickboxing & MMA at LA Boxing/UFC Gym – Cary, NC
2007–2008 Assistant Coach – Kickboxing & MMA at Rapid Fitness – Raleigh, NC
2007–2008 Assistant Coach – Kickboxing at Box 2 B Fit – Raleigh, NC
2008–2009 Head Coach – Kickboxing & MMA at RTP Fitness/Ironman MMA –Durham, NC

Rob Foster II

Head Muay Thai Instructor / Strength & Conditioning Coach / Personal Trainer

Rob is a Certified Personal Trainer with the National Academy of Sports Medicine and a former Professional Skier, Strength and Conditioning Coach, and Instructor/Trainer with Vail Resorts and Professional Ski Instructors of America. Rob got his start in Martial Arts studying Tang Soo Do and Jeet Kun Do in his teens. He was introduced to Muay Thai in 1990. For 11 years in Colorado, he focused on the Science of Skiing and training skiers; training and certifying over 150 Professional Skiers and Ski Instructors. During the summer, Rob’s focus was on Endurance Mountain Bike Racing, competing successfully in 12 hour, 24 hour, 50 mile and 100 mile races. In 2001 Rob became a Police Officer and spent several years in various duties of Law Enforcement. As part of his Police Training he was certified in Police Pressure Point Control Tactics, Koga-Ryu Weapons and Defense Tactics. Rob now resides in Carrboro, NC where he discovered United Thai Boxing & MMA, which rekindled his love of training Muay Thai and the Muay Thai lifestyle.

John Whitfield

Boxing Instructor

John Whitfield is a lifelong athlete, licensed professional boxer and an USA Boxing Certified Coach. Coach John Whitfield, originally from Mine Run VA, began training in boxing in 1989 along with his three older Brothers under the guidance of his Father. John went on to compete in several boxing matches, won many Tuff Man Boxing tournaments, won the Duke University Boxing team invitational, and was a Boxing Demonstrator.

Active in the sport of Boxing industry for more than 10 years, John has had the honor and privilege of training with some of the most skilled Pro Boxing/MMA/Kickboxing competitors and successful boxing coaches, including his Father James Whitfield (Texas State Golden Gloves). Coach Anthony Bradley (record holder for the most medals received for a single Olympic coach), Coach Rick Taylor (USA certified Boxing coach and owner of Body force boxing and fitness), Paul Marinaccio (pro fighter, and former WBF heavy weight champion), and Donnell Holmes (pro fighter).

Eventually Coach Whitfield developed a passion for teaching the sport to others and founded, The Triangle Assassins Boxing Club (formerly The RTP Boxing Club). Focused on fundamentals of the sweet science of boxing. During training, Coach Whitfield stresses the importance of strengthening the mind as well as the body and establishes training regiments that are designed to get you in the best cardio conditioning one can achieve.

Amanda Riccio, PHD

Yoga Instructor

Amanda is an energetic, motivated instructor who specializes in Yin Yoga and enjoys bringing yoga to the community.  She has been doing yoga for over 15 years, but always as a compliment to other activities. When Amanda started her PhD, about 7 years ago, she began to go to Bikram yoga classes out of necessity. She needed to balance out her crazy life as a stressed-out, PhD student and since then yoga has really become a focus. After Amanda finished her doctoral, she moved to Montreal, QC, Canada and after a while of doing Bikram yoga everyday, wanted something else. She gradually found herself balancing out her Bikram practice with yin yoga. Doing yin yoga made her less stressed, more focused, and it noticeably helped improve her other yoga practices and overall body positioning. After receiving her yin yoga teaching certificate at Happy Tree Yoga and teaching community classes in Montreal, Amanda was absolutely in love with sharing her practice. She recently moved to Durham, and wants to continue to share yoga in this community, both as a student and as a teacher. She aims to create classes which focus on deep stretching, moving at a slow pace, and general acceptance of where we are in the moment.

Johnny Kru

Muay Thai Level 2 Instructor / Muay Boran Specialist

Founder of Kruel Militia MMA.

Sarah Omwenga

Children and Adult Muay Thai Instructor

One of the top young female Muay Thai fighters in the state of NC. Sarah has been training Muay Thai for 6 years.  She placed 2nd in both the WKA (World Kickboxing Association) and IKF (International Kickboxing Federation) Muay Thai events behind the number 1 female world/international multi-champion in their weight class. Sarah trained at Diamond Muay Thai in Koh Phangan, Thailand.   

Adam Hughes

Muay Thai Instructor

Adam has been training in Muay Thai for 10 years and has a deep passion and knowledge for this Art. “Muay Thai has been an outlet and an avenue in which I channel my energy and let it all go. Without Muay Thai I don’t know where I’d be.”

Sarah Thompson

Children’s Muay Thai Instructor

Sarah has been training in Muay Thai for 6 years.  Sarah has competed in WKA (World Kick Boxing Association) and IKF (International Kickboxing Federation) Muay Thai events and has also boxed in an USA Boxing tourney.

Danny Feagans

Asst. Boxing Coach

Rob Foster II

Wrestling Instructor

Corey Bell is a longtime volunteer assistant coach for the Duke Blue Devils after a highly successful wrestling career at The University North Carolina. He works closely with the middle and higher weights and brings an infectious spirit to the program.

The Durham, N.C., native was a four-time ACC champion and NCAA qualifier for the Tar Heels during his collegiate wrestling career.

Bell, who majored in communication studies at North Carolina, was a Carolina ACT mentor, a member of the Black Student Movement and Ebony Readers. He also performed with the band Sankofa while at North Carolina. Bell is a successful entrepreneur and businessman in the Durham-Chapel Hill area.

Will Smith

Boxing Fitness & Cardio Kickboxing Instructor / Personal Trainer

Will “The Crazy Asian” Smith is former a East Coast Boxing trainer here to teach and lead Boxing Fitness. He has a passion for combat sports and a huge heart for helping others achieve their fitness and health goals.  Coach Will is also a successful personal trainer who will assist you in reaching your physical goals.

TK King

Owner / Kickboxing Instructor / Children’s Muay Thai Instructor / Personal Trainer

TK has 15 years of computer experience working for top companies in Research Triangle Park, NC, a Swedish company, and as an independent consultant. She was also a technology instructor in the Washington DC metro area. Even though TK was a “tech head” with a Computer Science degree and MBA, her passion for sports could not be denied.  TK lettered in 4 sports in HS, played college basketball and is an inductee in both the W-S/Forsyth County and Bishop McGuinness HS Sports Hall of Fame. TK is a certified personal trainer, USA Boxing certified coach and IKF Kickboxing promoter. Her Muay Thai journey started in 2013 and she did her formal training under Diamond Muay Thai gym in Koh Phangan, Thailand.