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ITC is home to an elite collective of Black Belts from all over the globe. Among our coaching staff, you will find Olympians, National Champions, and International Level Athletes. It may seem intimidating walking into a gym that appears filled with hardcore competitors - but accomplished, true martial artists are as humble as they are skilled. ITC staff is simply composed of passionate people who set out to become World Class at the things they pursue. That means they're world-class at helping their students reach their goals! This proves ITC as one of the best martial arts schools in not only Queens, but in all of New York City. 


Founder, Head Coach

Sensei Greg Gutman

Sensei Gregory Gutman is a 4th Degree Judo Black Belt, and the lead instructor at ITC. He has been training in the martial arts for over 45 years. He started training in the Russian martial art of Sambo and in Judo in 1973 and moved to completely to Judo in 1977.


He received the prestigious Master of Sport Certification from the Russian Government, (Black Belt,) in 1978. In 2004, he won the World Masters  Judo Championship and is a six-time World Judo Masters medalist. He won the Sambo Masters in 2016 and placed in the Sambo World tournament. Sensei Gregory is also the Vice President of the USA Sambo Federation and the President of the USA Hand To Hand Fighting Federation. 


Sensei’s Philosophy: “It is not about being the best. It’s about doing your best!

BRazilian Jiu-Jitsu

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Professor C. Ryan Quinn

Head Coach, Brazilian Jiu-Jitsu

 C. Ryan Quinn is regarded by many as the best Submission Grappler in Queens. A seasoned competitor and coach, Professor Quinn continues to regularly compete in international level events and has taught in over a dozen countries across the globe.

Professor Quinn received his black belt under charismatic MMA legend Renzo Gracie and continues his training under the world-renown Ivy-League professor turned Jiu-Jitsu coach John Danaher. A well-rounded student, he also holds a brown belt in Judo and continues his study of Freestyle & Folkstyle wrestling under Olympian Brandon Escobar. 

As a competitor, he has represented the United States in the World Professional Jiu-Jitsu Championships at purple belt, won the IBJJF New York International Open Gi & No-Gi at brown belt, is 4-time NAGA Champion in the Expert Division and is the reigning Rise Invitational 185lb Champion at the black belt level.


As a coach, Professor Quinn has a unique approach which presents Jiu-Jitsu as a thinking man's game - combining clear, simple instruction with broad universal concepts, and heavily relying on effective but fun games to build essential skills. 


Professor Jon Calestine

Coach, Brazilian Jiu-Jitsu

Jon Calestine is undoubtedly one of the best grapplers on the planet. Coach Jon is an EBI Champion and a Daisuke Yamaji (Renzo Gracie lineage) black belt in Brazilian Jiu-Jitsu, and protege of Jiu-Jitsu revolutionary Eddie "Wolverine" Cummings. 

Calestine specializes in No-Gi Jiu-Jitsu. After winning countless regional submission-only tournaments across the country, Jon stepped onto the world stage and went unbeaten to win the elite 16 Man Eddie Bravo Invitational. He then went on to unite his newly won title with the reigning IBJJF No-Gi World Champion Gianni Grippo, in a special sub-only challenge match that saw Calestine dominate the submission exchanges on his way to victory. 

Competing at the incredibly competitive 135 and 145 pound divisions, Coach Jon has developed a special skillset that keeps him one step ahead of the competition. As a result he is an internationally sought after instructor, having taught across multiple continents across the globe. 

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Coach Sebastian Berti

Head Coach, Kids Brazilian Jiu-Jitsu

With over a decade of experience, Coach Sebastian holds a brown belt in Jiu-Jitsu. He began his training in his home of Miami and relocated to New York City to pursue Brazilian Jiu-Jitsu full time at ITC in Astoria.


An active competitor, Sebastian's career reached new heights after completely dominating a black belt opponent in front of 5000 spectators at the Mohegan Sun Arena. 


Coach Sebastian gives back to the community by leading the Kids Brazilian Jiu-Jitsu and Mixed Martial Arts classes at ITC. Passion and attention to detail define his method of instruction, while discipline and excellent technique form the cornerstones of his program. 


An Olympian in Freestyle Wrestling, Coach Brandon Escobar is considered by many to be the single most accomplished wrestler teaching in Queens. 

Competing on the highest levels in American Folkstyle, Freestyle, and Greco-Roman Wrestling, Coach "Esco" possesses a depth of knowledge in his field that few will ever reach in their lifetime. With a long competitive career and a list of tournaments wins far too large to present here, he not coaches the students of the ITC Jiu-Jitsu program but also the staff.

Esco continues his training at ITC, currently possessing a blue belt in Brazilian Jiu-Jitsu. Outside of wrestling his wrestling career, he pursues excellence in everything he does: a foray in fighting in mixed martial arts saw him become Champion in the Triton Fights promotion.

Coach Brandon Escobar

Head Coach, Wrestling for Jiu-Jitsu

Muay Thai

Laszlo Huve has trained martial arts 35 years. Background in San Dao Kung Fu, Tae Kwon Do, Kick Boxing, and Muay Thai. After studying various martial arts, he developed the understanding that Muay Thai boxing is the most efficient stand-up fighting style. He has trained several military groups, in the United States and abroad. Coach Huve is a former kickboxing champion. He has extensive coaching and training experience. He has trained fighters for over 15 years. producing several national, state and world champions. Coach Huve is the first person to bring a mixed martial arts cage to New York City. 


Personal Philosophy: “Humility. I think that humility takes you further and makes you work harder…This is work and ongoing work. Champions are not born, they are made. Fighting is teamwork. It is never one guy by himself. Family, teammates around you… We try to make sure that whatever our students learn, they learn the right way. They are moving at their own speed, but still, in a way that they grow. It is not just a workout. Your mind, your body and your spirit have to grow. Do it with your heart, do it with your soul, do it with your body. Martial arts is a different approach. Martial arts is a lifestyle dedication. Whether it is Muay Thai, Judo or Brazilian Jiu-Jitsu, it’s an art.”


Coach Laszlo Huve

Coach, Muay Thai

Under Construction

Our staff page is currently in the process of completion. Please check back to learn more about why our Coaching Staff are among the best in the world.


Meet the coaches

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