 Although the IBU has sanctioned title matches and "world champions" from countries such as Barbados, Guyana, Germany, and Hungary, they often lack widespread recognition as the best fighters in their class.IBU titles can be a first title for boxers who progress to gain additional titles of the more recognized "Big Four".One notable former IBU Heavyweight Champion was Shannon Briggs, who had his title stripped in 2003 after refusing to face quality opponents.