The 1 season of The Ultimate Fighter was broadcast on ESPN from lundi 17 janvier 2005 to samedi 9 avril 2005. It consists of 14 episodes, the first one is called "The Quest Begins" and the last one "Forrest Griffin vs. Stephan Bonnar TUF 1 Finale".
Sixteen aspiring mixed martial artists live together, train together and compete against each other to become the Ultimate Fighter. They receive coaching from UFC champions and contenders in a variety of martial arts including wrestling, boxing, judo, Jiu-Jitsu, karate and kickboxing. The winner receives a six-figure contract from the UFC.