Welcome to Pitbull Jujitsu a White Tiger Production. Calvin Metz teaches you his system of Aiki Combat Jujitsu. With 40 years in the martial arts. Pitbull Jujitsu cut its teeth on no holds barred pit fights Calvin Metz teaches his streetwise system that won in the NO RULE pit fights of Chicago, New Orleans and Atlanta and it will work in the streets of your town too