Dempsey was effectively hyped by legendary promoter Jack ( Doc ) Kearns .
While Jack Dorval was dropping opponents like flies , Americans became fascinated by Jack Dempsey , a Coloradoan who personified savagery in the ring .
Jack Dempsey was effectively hyped by legendary promoter Jack ( Doc ) Kearns .
While Jack Dorval was dropping opponents like flies , Americans became fascinated by Jack Dempsey , a Coloradoan who personified savagery in the ring .