Tom DeBlass

Biography

Tom DeBlass is an American Brazilian jiu-jitsu black belt, former professional mixed martial artist, coach, and one of the most influential personalities in modern grappling. Known for his powerful top pressure, defensive guard game, and exceptional ability to teach complex concepts simply, DeBlass has built a global following both as a competitor and instructor.

DeBlass has an impressive 9–2 professional MMA career, competing in organizations such as the UFC and Bellator. He later signed with ONE Championship as an ambassador, helping grow the promotion’s submission grappling division while continuing to represent the jiu-jitsu community on a global stage.

DeBlass is a black belt under Ricardo Almeida and a respected figure in the North American jiu-jitsu scene. He founded Ocean County BJJ in New Jersey, producing numerous high-level competitors and contributing to the growth of jiu-jitsu in the region. His influence expanded further through his best-selling instructional series, seminars worldwide, and an active online presence where he shares technical guidance and motivational messages.

Beyond the mats, DeBlass is known for his outspoken personality, advocacy against bullying, and efforts to promote mental and emotional resilience within the martial arts community. His candor about personal struggles, growth, and the challenges faced by everyday practitioners has made him one of the most relatable and respected voices in the sport.

Tom DeBlass continues to be a major force in jiu-jitsu—through his competition legacy, global teaching influence, and role as a public figure dedicated to self-improvement, discipline, and helping others through martial arts.

Personal

* Legend status is reserved for retired athletes with outstanding achievements and a lasting impact on the sport.

Rankings