
The training and development of professional Ultimate Fighters.

TUF season 4 winner and former UFC welterweight champion Matt Serra pays a visit to Team Sonnen's training; Jeff Creighton and Andreas Binder prepare for their welterweight quarterfinal fight.

Diego annoys fellow Brazilian Rodrigo at the house, stirring up their rivalry even more; TUF season 20 winner Carla Esparza joins Team Sonnen's training; second flyweight quarterfinal fight.

Former TUF season 24 competitor and two-time UFC flyweight champion Brandon Moreno helps Team Cormier during training; Team Sonnen's Furkatbek Yokubov faces Alibi Idiris of Team Cormier in the third flyweight quarterfinal fight.

TUF alumni and former UFC champions Rose Namajunas and Raquel Pennington help Team Cormier during training; the third welterweight quarterfinal fight, Team Sonnen's Matt Dixon takes on Alex Sanchez of Team Cormier.