
Allen Causevic is a black belt under Jay Valko. He is has won multiple medals at all levels of jiu-jitsu and judo. Allen was one of Jay's first students and was the first person Jay ever promoted up every belt rank.
Allen Causevic is a black belt under Jay Valko. He is has won multiple medals at all levels of jiu-jitsu and judo. Allen was one of Jay's first students and was the first person Jay ever promoted up every belt rank.