About Us

Our Mission

We believe in training for our journey both as a martial artist and a citizen. The 15 levels of our belt rank system symbolize the journey we take to develop the skills that allow us to R15E to every occasion and help transform the world one person at a time. 

Come join us on the journey as we take new recruits, pursue excellence, and transform them into experts with the skills to achieve lifelong success.

Our Classes

All classes are split by age and skill level, so that we can make every class relevant and exciting for our athletes.  Adults train with adults, and kids train with kids.  Occasionally we will offer special "mixed" classes where Kids, Teens and Adults will come and train together which provides a fun and family friendly experience for all.  

Students can come as often as they like!  We recommend at least 2 sessions per week.  Our goal is that every session will leave the student  SWEATING, SMILING, & LEARNING!

Our Instructors

Clint Asay

Owner and Lead Trainer of Tiger-Rock Martial Arts of Lone Tree, Clint Asay is a Senior 5th Degree Black Belt with over 25 years of Martial Arts Experience.   


With a BS in Exercise Science from BYU, he combines cutting edge sports science and the latest teaching techniques to give his students the most effective experience possible. Over the years Clint has taught countless self-defense seminars for women, trained others in various weapons systems, and instructed tactical self-defense for the ATF.  

Christopher "CJ" Johnson

Academy Manager and Certified Trainer of Tiger-Rock Martial Arts of Lone Tree.  CJ is a 3rd Degree Black Belt with over 10 years of Martial Arts Experience. 

Starting his career as a professional basketball player, CJ continued his education with the US Navy (as a US Navy Seabee).  He holds a BA in English as well as technical degrees in Construction Technology, Automotive Prototyping and Machine Theory.  Before joining Tiger-Rock full time to combine two of his passions - Martial Arts and teaching - he worked for companies such Google, Amazon and the Department of Labor.  

Elias Downing

Elias is a 3rd degree black belt whose martial arts journey began in 2012 as a student here at Tiger-Rock Lone Tree. As a member of the instructing team staff for the past 2 years, Elias is one of the first “ home grown” instructors to come from Tiger-Rock Lone Tree. 

He is known as energy instructor who makes challenging easy and fun for all levels of students.  Elias has gained a well-deserved reputation throughout Tiger-Rock Nation as being not only a highly charismatic instructor, but as the instructor with a big heart. 

When not working at Tiger-Rock Lone Tree, you may find Elias enjoying Colorado's great outdoors with his family.

Ashley Abramson

Ashley is a 3rd degree black belt and long time member of the instructing team staff. She is dedicated to being an active part of the improvement of our students and academy and has training with Tiger-Rock for the past 6 years. 

Currently attending Metropolitan State University in Denver, Ashley is working towards earning her BS in Exercise Science with a minor in psychology.  She makes expanding her knowledge on how the body works in exercise a priority so she can become a more effective instructor. 

Ashley loves every second on the mat and hopes to transform the lives of our students as much as they have transformed her life.

Video Testimonial

Hear about Thomas' journey and how the Tiger-Rock R15E  program has transformed Thomas and his family,