If US boxing promoter Don King came to define the art of braggadocio in promoting a world title fight, then Briton Eddie Hearn has taken the art of bravado and showmanship to a whole new level in the age of social media.If US boxing promoter Don King came to define the art of braggadocio in promoting a world title fight, then Briton Eddie Hearn has taken the art of bravado and showmanship to a whole new level in the age of social media.