Date of Birth: 
Place of Birth: Rio de Janeiro, Brazil
About Léo Vieira
- Leonardo Alcantara Vieira commonly known as Léo Vieira or Leozinho is a Brazilian grappler, a Brazilian Jiu-Jitsu Instructor, and Competitor.
- He was born March 23, 1976 in Rio de Janeiro Brazil.He is the eldest of the Viera brothers (Ricardo and Leandro), who lead of and fight for Checkmat.
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