He holds notable K-1 wins over Sam Greco, Andy Hug, Remy Bonjasky, Ernesto Hoost, Peter Aerts and Stefan Leko.
He made his professional K-1 fighting debut on July 20, 1997 at the K-1 Dream '97 tournament against Kyokushin and Seidokaikan fighter Andy Hug.
This was their second encounter, the first being at the 5th Kyokushin World Tournament in 1991 that resulted in a controversial knockout victory for Filho with a technique that connected after the bell rang.
The second fight was also won by Filho quickly earning the Brazilian a large fan base in Japan as well as making him one of the then top contenders for the K-1 World GP Championship title.
He has not taken part in any major competition since 2004 but remains active developing young fighters and in overseeing Brazil’s Kyokushin national team.