Prizefighter: The Life of Jem Belcher is a 2022 British-American biographical drama film about the birth of boxing, written by and starring Matt Hookings. The film explores the life of Jem Belcher who became the youngest ever world champion. Jem was partially blind at the age of 22 and dead by the age of 30. The film stars Matt Hookings as Jem Belcher, Ray Winstone as his trainer Bill Warr and Russell Crowe as Jem's boozy grandfather Jack Slack. Marton Csokas, Jodhi May, Steven Berkoff, Julian Glover, Julius Francis are the supporting cast. The film was first theatrically released in Russia on June 30, 2022, and it had a VOD release by Amazon Prime on July 22, 2022.