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

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!