Rocky is certainly one of the greatest sports movies of all time, but a 2008 American Film Institute (AFI) poll determined that another boxing movie is actually the genre's champ. There's nothing quite like the Rocky movie franchise. Following its release in 1976, the original Rocky went on to win the Academy Award for Best Picture and has spawned at least eight sequels, two of them part of the spinoff series Creed. In 2020, Guinness named Rocky the most successful sports movie franchise (obviously excluding the Fast & Furious films). Still, another sports movie that failed at the box office is considered by experts to be a better film.

https://screenrant.com/afi-greatest-sports-movie-raging-bull-not-rocky/