“A champion should ask himself, “if I were to compete against myself, what would I practice to beat me?“
- Leo Vieira
Founder of Checkmat
OUR MISSION
At Checkmat South Texas we strive to engage the student through physical & mental training in Jiu-Jitsu, to become disciplined, confident, healthy individuals.
The Checkmat Direction
As a representative of Checkmat South Texas, I will always lead by example and understand that my actions are to be held accountable. It is my goal to positively influence future generations to come.
I understand that rules are established to protect myself and others.
I will listen to my body, thoughts, and feelings; without getting carried away by them. I will be present and aware of my surroundings, without judgment.
We are Checkmat. We are Jiu-Jitsu.
2025 Checkmat World Champions
Adam Wardzinski
Jansen Gomes
Matheus Gabriel
Notable Checkmat Athletes
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Leo "Leozinho" Vieira
FOUNDER of Checkmat
2x ADCC Champ / ibjjf world champ
head of submission grappling for One championship
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Ricardo "Rico" Vieira
CO-FOUNDER OF CHECKMAT
HEAD OF BJJ AT CHECKMAT / FIGHTZONE LONDON
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Leandro Vieira
CO-FOUNDER OF CHECKMAT
HEAD OF BJJ AT AMERICAN KICKBOXING ACADEMY
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Marcus "Buchecha" Almeida
13X BLACK BELT WORLD CHAMPION
ONE CHAMPIONSHIP MMA FIGHTER
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Lucas “Loucura" Leite
PROFESSOR / OWNER OF CHECKMAT LA HABRA & Upland
MULTIPLE TIME WORLD CHAMPION
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Samuel "Samurai" Nagai
WORLD CHAMPION
PROFESSOR AT INEVAT JIU-JITSU
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Jackson Nagai
PANAMERICAN / AMERICAN NATIONAL CHAMPION
PROFESSOR / OWNER OF CHECKMAT CHINO
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Matheus Gabriel
2x WORLD CHAMPION
OWNER / PROFESSOR OF INEVAT JIU-JITSU
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Jansen “Nenego” Gomes
WORLD CHAMPION
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Leka Vieira
FIRST EVER FEMALE BLACK BELT WORLD CHAMPION
USA MARTIAL ARTs HALL OF FAMER
OWNER / PROFESSOR OF CHECKMAT VALENCIA
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Nathalie "Tata" Ribeiro
MULTIPLE TIME WORLD CHAMPION
PROFFESSOR AT CHECKMAT LA HABRA
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João Assis
IBJJF WORLD CHAMP / ADCC CHAMP
OWNER / PROFESSOR OF CHECKMAT HUNINGTON BEACH
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Adam Wardziński
2x IBJJF WORLD CHAMPION
Crown Winner
OWNER / PROFESSOR OF CHECKMAT POLAND
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Karen Antunes
IBJJF WORLD CHAMPION
OWNER / PROFESSOR of CHECKMAT PHOENIX
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Matheus Luna
OWNER OF LUNAJITSU
PROFESSOR AT CHECKMAT FRESNO & LOS ANGELES
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Luiz Panza
ibjjf world champion
Owner / professor of Checkmat rolling hills
