Question: Which movie starring Russell Crow was about the world heavyweight boxing champion from 1935 to 1937?

Context paragraphs:
Jackie Frazier-Lyde: Jacqueline "Jacqui" Frazier-Lyde (born Jacqueline Frazier; December 2, 1961) is an American lawyer and former professional boxer, who is the daughter of former world Heavyweight boxing champion Joe Frazier.  In the year 2000, she shocked the boxing world by announcing that at the age of 38, she would begin participating in the sport of women's boxing.  Frazier-Lyde had athletic experience, having played basketball at American University in Washington, D.C.

Tommy Burns (boxer): Tommy Burns (June 17, 1881May 10, 1955), born Noah Brusso, is the only Canadian-born World Heavyweight Boxing Champion.  The first to travel the globe in defending his title, Tommy made 11 title defences despite often being the underdog due to his size.  Burns famously challenged all comers as Heavyweight Champion, leading to a celebrated bout with the American Jack Johnson.  According to his biographer, Burns insisted, "I will defend my title against all comers, none barred.  By this I mean white, black, Mexican, Indian, or any other nationality.  I propose to be the champion of the world, not the white, or the Canadian, or the American.  If I am not the best man in the heavyweight division, I don't want the title."

Jess Willard: Jess Myron Willard (December 29, 1881 – December 15, 1968) was a world heavyweight boxing champion known as the Pottawatomie Giant who knocked out Jack Johnson in April 1915 for the heavyweight title.  He was known for his great strength and ability to absorb tremendous punishment, although today he is also known for his title loss to Jack Dempsey.

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: Cinderella Man is a 2005 American drama film by Ron Howard, titled after the nickname of heavyweight boxing champion James J. Braddock and inspired by his life story.  The film was produced by Howard, Penny Marshall, and Brian Grazer.  Damon Runyon is credited for giving Braddock this nickname.  Russell Crowe, Renée Zellweger and Paul Giamatti star.

Jack Johnson (boxer): John Arthur "Jack" Johnson (March 31, 1878 – June 10, 1946), nicknamed the Galveston Giant, was an American boxer, who—at the height of the Jim Crow era—became the first African American world heavyweight boxing champion (1908–1915).  Johnson went on to become one of the most dominant champions of his time, and remains a significant historical figure in heavyweight boxing history, with his 1910 fight against James J. Jeffries being dubbed the "fight of the century."  Johnson was faced with much controversy when he was charged with violating the Mann Act in 1912, even though there was an obvious lack of evidence and the charge was largely racially based.  In a documentary about his life, Ken Burns notes that "for more than thirteen years, Jack Johnson was the most famous and the most notorious African-American on Earth".

Ferdie Pacheco: Fernando "Ferdie" Pacheco, M.D. (born December 8, 1927) is the former personal physician and cornerman for world heavyweight boxing champion Muhammad Ali, as well as numerous other boxing champions.  Known as "The Fight Doctor," Pacheco was a TV boxing analyst for several television networks beginning in the late 1970s, most notably NBC and Showtime.

Frank Goddard: Percy Frank Goddard (27 November 1891- 8 December 1957) was a British boxer who became the heavyweight boxing champion in 1923.  Goddard's career begin in 1914 and it soon became apparent that he was one of the best boxers in the UK.  He became the British heavyweight boxing champion on 26 May 1919 having beaten Jack Curphey for the vacant British Boxing Board of Control (BBBofC) British heavyweight title.  Goddard lost the British heavyweight championship on 17 June 1919 to Joe Beckett.

Philadelphia Jack O'Brien: Joseph Francis Hagan (better known as Philadelphia Jack O'Brien) (January 17, 1878 – November 12, 1942) was the world light heavyweight boxing champion.  Nat Fleischer, founder and editor of "The Ring" Magazine, ranked O'Brien as the No. 2 All-Time Light Heavyweight, and famed boxing promoter Charley Rose ranked him as the No. 3 All-Time Light Heavyweight.  O'Brien was inducted into the Ring Magazine hall of fame in 1968, the World Boxing Hall of Fame in 1987, and the International Boxing Hall of Fame in 1994.

Lucas Browne: Lucas Browne (born 14 April 1979) is an Australian professional boxer and former mixed martial artist.  In boxing he has held the Australian and Commonwealth heavyweight titles, and made history in March 2016 by becoming Australia's first world heavyweight boxing champion after winning the WBA (Regular) title.  However, Browne was stripped of the title two months later for failing a drug test.  This ruling was then overturned in September, clearing him of any wrongdoing.  In November, Browne produced another positive drug test.

Supporting paragraphs: Cinderella Man James J. Braddock
Answer: Cinderella Man