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Léo Vieira
Leo Vieira.jpg
Vieira in May 2019
Born (1976-03-23) March 23, 1976 (age 48)
Rio de Janeiro, Brazil
Other names Leozinho
Division Featherweight
Style Brazilian Jiu-Jitsu
Team Checkmat
Rank 6th deg. BJJ black belt
Years active 1997–2013; 2017
Léo Vieira
Medal record
Representing  Brazil
Grappling
ADCC
Gold 2003 São Paulo, Brazil -66kg
Gold 2005 California, USA -66kg
Silver 2007 New Jersey, USA -66kg
Silver 2011 Nottingham, UK -77kg
Brazilian Jiu-Jitsu
World Championship
Silver 1997 Rio de Janeiro, Brazil -76kg
Gold 1998 Rio de Janeiro, Brazil -76kg
Bronze 2000 Rio de Janeiro, Brazil -76kg
Brazilian Jiu-Jitsu
Pan American Championship
Gold 2002 California, USA -69kg
Gold 2004 California, USA -69kg

Leonardo Alcantara Vieira (born March 23, 1976) commonly known as Léo Vieira or Leozinho is a Brazilian submission grappler and Brazilian Jiu-Jitsu instructor.

He is the eldest of the Viera brothers (Ricardo and Leandro), who lead and fight for Checkmat.

Brazilian Jiu-Jitsu

Leo Vieira began training Jiu-Jitsu under Romero 'Jacare' Cavalcanti at the age of 6. He has won numerous medals, such as the Brazilian Jiu-Jitsu World Championships, Pan American Championships and the prestigious ADCC world championships. After being on break from Jiujitsu Gi competition, Vieira competed again on July 16, 2017, at the age of 41. He competed in Absolute Championship Berkut Jiu-Jitsu 6 in Moscow and lost the fight via terra footlock. On September 25, 2017, Vieira competed in the ADCC against former Ultimate Fighting Championship title contender, Chael Sonnen in the absolute division. Vieira lost the fight via referee's decision. Vieira returned after more time away from competition at BJJ Stars 7 on November 6, 2022, where he defeated Cleber Luciano 8-0 on points in a superfight.

In 2022, Vieira was hired as the Vice President of Grappling for ONE Championship.

CheckMat Jiu-Jitsu Team

One of the most successful teams in contemporary Brazilian Jiu-Jitsu, CheckMat's worldwide headquarters is in São Paulo, Brazil. CheckMat was established in 2008 by Leo and his brothers. Since its creation, Checkmat has become one of the top teams in Brazilian Jiu-Jitsu. Team CheckMat is the 2008 and 2009 NoGi World Champion Team. Team Checkmat also came in first for the Brazilian Nationals (Gi) 2010 and Brazilian Nationals (No-Gi) 2010.

Instructor lineage

Mitsuyo Maeda → Carlos Gracie, Sr. → Helio Gracie → Rolls Gracie → Romero Cavalcanti → Léo Vieira

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