Meet Our Instructors
ALEXANDER GREENFIELD (Founder)
Judo, Karate, Wrestling, Self-Defense, MMA
Alex has black belts in judo and karate, and he is working on a purple belt in Brazilian jujitsu. He has been a teacher for over 30 years at various locations including BYU-Idaho. He currently teaches as the head of Special-Ed in the Rigby public school district. He is currently pursuing his Doctorate in Educational Leadership. Alex is also the founder of Rigby free soccer.
He was East Coast Judo champion (brown belt) and a rotating co-captain of a state championship wrestling team. He won his division in the 2021 Rigby Lake Triathlon. He has trained under Olympic coaches, international referees, and with multiple other Olympians, including Rhonda Rousey.
NED SANDS
Brazilian Jiu Jitsu, Fencing
Ned began training Brazilian Jiu Jitsu in 2006 under Armand Debruge at Impact Jiu Jitsu Beaverton. He focuses on fundamentals while teaching techniques, takedowns, defenses, offensive setups, and competition strategies.
A former nationally ranked fencer and certified referee, Ned brings a disciplined, competitive edge to his teaching.
A retired U.S. Navy Captain (2006), Ned is an alumnus of the Naval War College and National Defense University, with a BA from UCLA and a Master’s in Public Administration from USC.
RYAN CHRISTENSEN
Karate
Ryan Christenson has studied martial arts since 2004 and has black belts in Freestyle and Goshin karate as well as in the Superfoot System. In 2014 he began teaching Freestyle karate at BYUI and continues to teach both Goshin and Freestyle karate. He has trained under Bill “Superfoot” Wallace who was an undefeated kickboxing champion. Ryan strives to help others develop good technique in karate.
In 2016 he received a BS in Recreation Management obtained from BYU Idaho. He has worked as a substitute teacher in AK, AZ, and ID; a carpenter, recreation park ranger, and security. He was raised in Alaska where he developed a passion for the outdoors. Ryan served an LDS mission in Los Angeles, California. He enjoys martial arts, dancing, rodeos and traveling.
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ROGÉRIO MORAES (Roger)
No Gi, Brazilian Jiu Jitsu, MMA, Kickboxing
Roger’s journey began on the futsal courts of Brazil, earning a professional soccer contract at 17 and later extending his career internationally to London. His athleticism was further honed through competitive track and field, where he excelled in sprinting and jumping disciplines.
A devoted martial artist, Roger holds a purple belt in Brazilian Jiu-Jitsu under Master Ned Sands. He trains daily in all the sports as part of the Lionheart MMA team, where his commitment to growth and technical refinement continues to set a high standard.
Beyond the mats, Roger is a dedicated husband and father of two, with a passion for retro gaming, photography, hands-on repairs, and endurance running—pursuits that mirror his values of focus, resilience, and continuous improvement.
JARED ORZEL
Karate, MMA
Jared Orzel has a black belt in karate and has been training for 20 years. He is a karate researcher who focuses on finding the original application or "bunkai" of karate kata and making it practical for modern students. His mission statement is to create historically accurate bunkai that can be applied in sparring today.
His classes focus on striking into the bridge, transitioning into the clinch, and finishing with joint locks, sweeps, and throws. Each step of the way is taught as being a part of a greater whole. This allows students to understand, not only how each technique is used, but how to set it up, both offensively and defensively against a live, resisting opponent.
RAYDON DIAB
Judo
Raydon started judo when he was only 5 years old. His parents wanted him to learn a sport that could give him confidence. He quickly fell in love with it, and martial arts has been with him ever since.
He is a 10-time national champion who has competed in several international events. He was selected to be part of the Olympic training team in 2020 for the Tokyo 2020 Olympic Games. He reached his third-degree black belt in 2021. Raydon is an International Judo Federation (IJF) qualified coach and instructor. He is currently at BYUI as a new student mentor.
His life motto is "when life knocks you down, try to land on your back because if you can look up, you can get up."
Taekwondo
Driven by a deep passion for Taekwondo, Eowyn Marston brings over seven years of teaching and training experience to her students. As a certified instructor and second-degree black belt, she is committed to helping others discover the transformative power of martial arts.
Eowyn believes Taekwondo is more than physical training—it’s a path to personal growth. Her classes emphasize discipline, patience, honor, and courage, while also building strength, balance, and confidence. Through dynamic instruction and positive social interaction, she empowers students to lead healthy lifestyles and develop the skills to protect themselves and others.
EOWYN MARSTON
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Yoga
Molly Jorgensen has a Masters of Fine Arts and is a Certified Leadership Martial Artist, as well as a Subject Matter Expert/Trainer. She is also a Dance Artist, Somatic Movement Educator/Therapist, Certified Laban/Bartenieff Movement Analyst, Yoga Instructor and all-around movement geek.
Her teaching practice and creative work are informed by ongoing study in embodied research, mindfulness, neuroscience, psychology and the blend of dance/movement science & somatics for movement training, performance, healing and wellness.
She currently teaches at Brigham Young University Idaho. Molly is the founder and owner of MBody Movement & Somatic Wellness.
MOLLY JORGENSEN
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Tai-Chi & other Chinese martial arts
One would not think it to when you look at him, but he is over 70 years old, and still as strong and as flexible as in his youth.
Dr. Frank Weston is a Tai-Chi Instructor in Kun-Lun Style from Tibet, China. He is excited to bring the increased flexibility, coordination, and focus that Chinese martial arts come with to Rigby and the surrounding area.
Frank teaches Tai Chi with a focus on its roots as a traditional martial art. He emphasizes structure, balance, and the internal power that gives Tai Chi its depth and effectiveness.
Frank will teach not only Tai Chi, but also Qi-Gong and Tui-Shou at the Mamoru dojo.
FRANK WESTON
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