Which movie starring Russell Crow was about the world heavyweight boxing champion from 1935 to 1937?
Cinderella Man:  Russell Crowe, Renée Zellweger and Paul Giamatti star. James J. Braddock: James Walter "Cinderella Man" Braddock (June 8, 1905 – November 29, 1974) was an American boxer who was the world heavyweight champion from 1935 to 1937.
Cinderella Man