With teams set and training underway, the competition kicks off as the flyweight division's top two picks clash in an explosive first fight.

TUF legend TJ Dillashaw joins Team Sonnen as guest coach. Then, Donchenko faces Martins in the first welterweight fight with a semifinal spot on the line.

Diego annoys Rodrigo, fueling their rivalry. Carla Esparza trains with Team Sonnen. Arshiyan Memon faces Imanol Rodriguez in the flyweight quarterfinal.

A former champion visits a team. Two men prepare for a fight. One struggles with his weight cut, putting his future in jeopardy.

A former champion helps a team during training. A man faces another man in a fight for a quarterfinal spot.

Two former champions help a team during training. A man takes on another man in a quarterfinal fight.

Teams are sent out for a night of Brazilian jiu-jitsu. Two flyweights face off for a spot in the semi-finals.

Yair Rodriguez joins Team Cormier for training. Diego and Rodrigo clash in the final quarterfinal to settle their heated rivalry.

Sonnen and Cormier kick off a quirky challenge that stirs the energy, as Peña suddenly drops into training, and the flyweight semi-final ignites with fierce momentum.

Two men take a team to see a show. Two teammates face off in a semifinal for a spot in the live finale.

A winner of a show stops by to hang out with the teams. A man faces another man for a spot in the live finale.

Two coaches take their teams out for a final dinner. A Hall of Famer helps out at a training. Two men face off.