 As a professional, he started out announcing games for the Peoria Chiefs single-A baseball club in 1987.Impemba also served as the sports director at WXCL Radio and the play-by-play voice of the Peoria Rivermen of the now-defunct International Hockey League during the 1987-88 season.From 1989 to 1990, Mario served as the voice of the Quad City Angels single-A team in Davenport, Iowa.