Dustin Poirier vs. Justin Gaethje; from UFC on FOX 30 on April 14, 2018.

A look back at Jose Aldo vs. Max Holloway for the UFC featherweight title from UFC 212 in Rio de Janeiro, Brazil.

Features Conor McGregor vs. Eddie Alvarez from UFC 205 on Nov. 12, 2016.

After an injury takes Jose Aldo out of the fight, featherweight standouts Chad Mendes and Conor McGregor face off in an interim championship bout. See them train and then watch their UFC 189 matchup.

Flyweight champion Demetrious Johnson looks to break the record for most UFC titles, but hungry challenger Ray Borg is eager to stop him. See them train and then watch their UFC 216 matchup.

Flyweight champion Demetrious Johnson faces BJJ black belt Wilson Reis and contenders Rose Namajunas and Michelle Waterson square off in a pivotal strawweight battle.

Light heavyweight veteran Glover Teixeira meets former champion Rashad Evans; Rose Namajunas takes on Tecia Torres; the fighters train and watch their matchups.

From May 28, 2017.

Legendary heavyweights Fabricio Werdum and Mark Hunt square off for the interim UFC championship.

Valentina Shevchenko takes on Holly Holm, from July 23, 2016.

Heavyweight stars Junior dos Santos and Stipe Miocic get main event billing at UFC Fight Night in Phoenix - go inside their gyms as they prepare for the big night and see the action-packed bout.

A look at Alvarez vs. Gaethje from Dec. 2, 2017.

A look at Nurmagomedov vs. Barboza from Dec. 30, 2017.

Former UFC bantamweight champion Dominick Cruz returns from a long layoff due to injury to take on reigning titleholder TJ Dillashaw.

Bantamweight champion TJ Dillashaw must defend his title against the man he won it from, Renan Barao.

Heavyweight champion Cain Velasquez and former champion Junior Dos Santos prepare to complete their trilogy in the headlining bout of UFC 166; visiting their gyms to see how their careers evolved in the UFC.

Features the heavyweight championship showdown between Stipe Miocic and Alistair Overeem. UFC Main Event showcases the best fights of recent vintage, set up by pre-fight, interview-driven features that reveal the backstories of the athletes.

Features Brock Lesnar vs. Alistair Overeem and Nate Diaz vs. Donald Cerrone.

Longtime champion Georges St-Pierre returns from injury for a title unification bout against teammate and interim champion Carlos Condit. See both athletes' long roads to this high-level matchup and the fight itself.

Features bout from Yoel Romero vs. Luke Rockhold; from Feb. 10, 2018, in Australia.

Welterweight bout between former UFC Welterweight Champion Robbie Lawler and former UFC Lightweight Champion Rafael dos Anjos; from Dec. 16, 2017 in Winnipeg, Canada.

Features showdowns between contestants of the Ultimate Fighting Championship.

Enhanced replays of memorable fights.

"UFC Unleashed" features the greatest moments from the Ultimate Fighting Championship's vast library of mixed martial arts footage, including matchups that were previously exclusive to pay-per-view audiences. As opposed to simple highlights, "Unleashed" treats fans to bouts in their entirety, from the opening bell to the knockout, tap out or decision, and some episodes consist of a "best of" compilation featuring one UFC star.

One of the biggest advantages for MMA fans resulting from UFC's programming shift to Fox in 2011 is the mixture of content -- both events and series -- produced for Fox-owned Fuel TV. Some of the best comes in the form of the three-hour, mano-a-mano extravaganza "UFC Reloaded," a re-air of the biggest and most memorable UFC pay-per-view events in history. Of course, the fight results are history, too, but seeing the battles for the first time (or once again) is usually worth the wait, and it's free! The series also features footage that was never shown on the original PPV broadcast.

Special programs presented by UFC.

The training and development of professional Ultimate Fighters.