This isn't intended to be a comprehensive list. I'm just going to be periodically updating this list with titles from the following IMDB search parameters:
https://www.imdb.com/search/title/?genres=documentary,sport
UPDATED: 5/17/24
TV Shows & Movies about Boxing, Karate, MMA
Movies and TV Shows based on True Stories
Movies and TV shows that are on Disney+
Disney+
by ASM