Check out the first preview episode ahead of the much-anticipated showdown.
Cain Velasquez defends his heavyweight crown against the only man to ever defeat him, former champion Junior Dos Santos in the main event at UFC 166 on October 20.
Ahead of the fight the UFC cameras behind the scenes to look at the training camps of the two men in what should be a thrilling third installment of their rivalry.
While the documentary does not feature the brash hype and trash talking that is accosted with such occasions, it does show that while the pair are two of the nicest men away from the cage, the switch gets flicked when the door closes.
And that is only heightened more when the gold is on the line.
With either fighter being able to end the fight with a single punch, fanatix wants to know from you who wins and why in Houston?