Watch The Ultimate Fighter Season 4 Episode 1: The Ultimate Fighter is a reality TV show where 16 contestants live together and battle each other for a pair of Ultimate Fighting Championship contracts. The UFC is divided into five weight classes, Heavyweights, Light Heavyweights, Middleweights, Welterweights and Lightweights. In the first season of The Ultimate Fighter, there are 8 Light Heavyweights and 8 Middleweights, with four of each trained by two legendary UFC competitors Randy Couture and Chuck Liddell. Willa Ford hosts the reality challenge segments that help determine who fights who to stay in the competition.