Cinderella Man (2005)

James J. Braddock, a washed-up boxer forced to give up his career due to a broken hand, takes on a fight against the number-two contender and unexpectedly knocks him out. Against his wife's wishes, Braddock returns to boxing and becomes a symbol of hope during the Great Depression. He faces Max Baer, the vicious champion, in a title fight and defies the odds to become the heavyweight champion of the world.