Watch how Gustavo “Sirizinho” Pires tapped out Daniel Simmler in Boston

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The heavier fighters also deserved the spotlight at the IBJJF Boston Open held last Sunday in Massachusetts.

From Gracie Barra, Gustavo “Sirizinho” Pires won the super-heavyweight category by tapping out Daniel Simmler (Renzo Gracie) with an armbar in the final match.

Check out how the black belt did it!

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