At Checkmat Headquarters Brazilian Jiu-Jitsu we believe that Brazilian Jiu-Jitsu is a martial art and combat sport that focuses on grappling and ground fighting. It was developed in Brazil in the early 20th century by Carlos Gracie, who blended elements of Kodokan judo, Mitsuyo Maeda’s Kodokan jujutsu, and other influences. Jiu-Jitsu is sometimes referred to as Gracie Jiu-Jitsu since Carlos’s son Helio Gracie developed a variant of the art that emphasized submissions and guard work overthrows and takedowns.

Brazilian Jiu-Jitsu is known for its effectiveness in self-defense situations, as well as its success in mixed martial arts competitions. The goal in BJJ is to force an opponent to submit through the use of chokes and joint locks or to gain a dominant position from which an attacker can be controlled or knocked out. In addition to being an effective fighting style, BJJ is also a great workout and can be practiced by people of all ages and skill levels.

Checkmat’s success comes from the steady leadership and instruction of Master Leo Vieira, a 5th degree BJJ black belt and Judo black belt. Nicknamed “Leozinho” or “Little Lion” he is known—uniquely—as both one of the finest jiu-jitsu competitors of his generation (2X World Champion, 2X ADCC winner) and also as a pioneering coach and instructor. Master Leo sees both the art and science within BJJ, emphasizing technical prowess and invention while also strongly believing in the dynamic expression and individuality of each practitioner. In any given month, you can find Master Leo teaching a world champion, a Sheikh, a prince, a police officer, a nurse, a college student, an elementary school student, or a beginner on his or her first day all with the same kindness, interest, and passion.

At Checkmat Headquarters Brazilian Jiu-Jitsu, you will find world-class, hands-on instruction that has been tested on the practice mats and proven on the competition field. Checkmat men, women, and youth have won some of the most prestigious tournaments in the sport including the World Championships, the Brazilian National Championships, and the Abu Dhabi Combat Club (ADCC) Submission Wrestling World Championships.

Place Checkmat Headquarters Brazilian Jiu-Jitsu

Head CoachProfessor: Leo Vieira

BeltBlack Belt

Address & Contact

Our Address

3290 E 19th St, Signal Hill, CA 90755, United States


33.7913527, -118.1533651

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Our Useful Features & Services


Gi and NoGi

Professors and Coaches

Patricia Fontes, Catherine Fuhro Perret, Gabriel Almeida and Kauan Barboza


Mitsuyo Maeda > Carlos Gracie Sr > Helio Gracie > Rolls Gracie > Romero Cavalcanti > Leo Vieira