The treatment made him overweight and he wanted to take up a sport and chose Brazilian jiu-jitsu, eventually becoming a BJJ black belt under Sebastian Lalli at Checkmat in Brazil.
[6] Pucci made his MMA debut on October 15, 2011 and submitted Raoni Tavares in the opening round at Adventure Fighters Tournament in Paraná.
In November 2012 Pucci moved to Singapore to join the fight team at Evolve MMA which included fellow Brazilians Rafael Dos Anjos and Leandro Issa.
[9] On May 30, 2014, Pucci faced Major Overall at ONE FC: Honor and Glory, suffering his first loss by first-round knockout via punches and a soccer kick.
Pucci picked up his second consecutive victory against former ONE Lightweight Champion Kotetsu Boku at ONE Championship: Eternal Glory on January 19, 2019.
[15] Pucci lost his next fight against Kwon Won Il by first-round knockout at ONE Championship: Inside the Matrix 4 on November 20, 2020.