Kids Coaches

Who We Are

Foster Ehrie


-BJJ Blue Belt-
-4 Years High School Wrestling-
-Fuji KY State BJJ Champion-

Foster's Bio

Foster began training Jiu-Jitsu at age 10.   After focusing on wrestling for 4 seasons in High School, he restarted BJJ and joined the Pedigo Submission Fighting team in 2020.
He made a strong addition to Triangle’s new & growing training room, but truly stood out when he began assisting with the Kid’s Classes.
Foster has a genuine passion and heart for children, and a natural ability to relate to, teach, and mentor young athletes.

After two years of training and teaching as an Assistant Coach, Foster became the Head Coach of our Kid’s Jiu-Jitsu Program.

“When I first started coaching, I had no idea how impactful this career could be.   Not just teaching Jiu-Jitsu & Wrestling, but imparting life lessons, good manners, and – most importantly – helping these kids understand what can come from hard work and discipline.   Every day I come to the gym with an immense sense of pride and gratitude for this opportunity!”

Justin Claphan


-BJJ Brown Belt-
-Fuji Ohio State Championship Silver Medalist-

Justin's Bio

Justin began training in Ohio in 2014, under the Ribeiro Jiu-Jitsu Association.  After receiving his Brown Belt, Justin and his wife Christy relocated to Franklin, and joined the Pedigo Submission Fighting team.
He has been a dedicated part of our training room since shortly after Triangle Academy opened, and brings a wealth of experience to the Kids Jiu-Jitsu Program as a Senior Coach.

“Jiu-Jitsu is a great way to stay in shape, gain self-confidence, and improve in so many ways – I love it because it is so FUN!! My favorite part of being a coach is seeing other people’s growth. Knowing that I can help kids learn to handle a bullying situation especially is a great feeling.”

Rishi Martinez


-BJJ White Belt-
-Fluent in Spanish-

Rishi's Bio

Originally from Culver City, California, Rishi began his Jiu-Jitsu training at Triangle Academy, after moving to Tennessee.  He has been a dedicated part of our training room and great addition to the team, and now works as an Assistant Coach in the Kids Jiu-Jitsu Program!

“I’ve enjoyed my training from the beginning, and my love for the sport has just deepened since being able to teach.  Coaching the Kids Classes motivates me to be a better leader and teammate myself. My goal is to compete successfully and one day, open my own Jiu-Jitsu gym!”