Since movies about Jake LaMotta and Rocky Graziano were quite successful, do you think a movie about Sugar Ray Robinson, who is considered to be a far superior boxer, as well as
Raging Bull (1980) - IMDb
Jake LaMotta Biography - Life of American Boxer
The Darker Road Of Raging Bull - The Book Packs A Bigger Punch
Jake LaMotta, 'Raging Bull' of boxing, dies at 95 - The Washington Post
How Jake La Motta Really Felt the First Time He Saw Raging Bull | Vanity Fair