American Top Team vs Blackzilians video preview for Ultimate Fighter (TUF) 21

For the first time ever, The Ultimate Fighter (TUF) will pit two of the top gyms in mixed martial arts (MMA) today, American Top Team (ATT) against the Blackzilians, against each other in an elimination-style tournament with a $500,000 grand prize awarded to the winner at the conclusion of the FOX Sports 1 program, which debuts on April 21, 2015. The teaser video above illustrates the heat between both South Florida gym owners, Dan Lambert (ATT) and Greg Robinson (Blackzilians) as eight up-and-coming Welterweight fighters from both camps collide. For more on TUF 21: "American Top Team vs. Blackzilians" click here.