Watch as Conor McGregor earned his first UFC belt when he defeated Chad Mendes at UFC 189 for the interim featherweight championship. McGregor takes on Khabib Nurmagomedov at UFC 229 in the main event on October 6 live on Pay-Per-View.

Conor McGregor finally earned UFC gold when he defeated Chad Mendes at UFC 189 for the interim featherweight title. Don't miss McGregor take on Nate Diaz in a rematch on Aug. 20 at UFC 202.

"Ruthless" Robbie Lawler's earned a fifth round UFC knockout victory against Rory McDonald at UFC 189. He looks to defend his Welterweight title against Tyrone Woodley at UFC 201 in Atlanta, Georgia. Don't miss the action July 30.

Gunnar Nelson bounced back from his first loss in the UFC with an impressive rear naked choke of Brandon Thatch at UFC 189. Nelson is set to face Albert Tumenov on May 8 at Fight Night Rotterdam.

Conor McGregor took on Chad Mendes on short notice at UFC 189 and claimed the featherweight interim title. Now as the undisputed 145-pound champ, McGregor will fight Nate Diaz at UFC 196 on Mar. 5 live on Pay-Per-View.

Go back and watch all the joy and disappointment from UFC 189, which many are calling the greatest fight card in UFC history. Watch Conor McGregor and Robbie Lawler celebrate their massive victories in Las Vegas.

Chad Mendes spoke backstage with Megan Olivi about his performance at UFC 189, suffering a defeat at the hands of Conor McGregor.

Frankie Edgar gives his thoughts on UFC 189 and the future with Megan Olivi.

Watch the highlights of the UFC 189 post-fight press conference featuring Dana White, Conor McGregor, Chad Mendes, and more.

Jeremy Stephens spoke backstage with Megan Olivi about his performance at UFC 189, with a TKO win against Dennis Bermudez.

Robbie Lawler spoke backstage with Megan Olivi about his performance at UFC 189, with a TKO win against Rory MacDonald

Conor McGregor talks to UFC commentator Joe Rogan about his second round TKO victory over Chad Mendes in UFC 189. Rogan also speaks to Chad Mendes who gives his thoughts on accepting the fight on such short notice.

Gunnar Nelson spoke backstage with Megan Olivi about his performance at UFC 189, with a first-round submission win against Brandon Thatch.

Thomas Almeida spoke backstage with Megan Olivi about his performance at UFC 189, with a KO win against Brad Pickett.

Matt Brown spoke backstage with Megan Olivi about his performance at UFC 189, with a first-round submission win against Tim Means.

Cody Garbrandt spoke backstage with Megan Olivi about his performance at UFC 189, with a unanimous decision win against Henry Briones.

As a recap to what occurred during this year’s 2015 UFC Hall of Fame induction ceremony, UFC correspondent Megan Olivi takes you through the day with interview of this year’s inductees, Matt Hughes, Frank Trigg, Bas Rutten, and "The Prodigy" BJ Penn.

Watch as UFC 189 stars such as Robbie Lawler, Gunnar Nelson, Matt Brown, Brandon Thatch and more tell you about the craziest items they've purchased with the extra performance bonus money they've earned throughout their careers in the UFC.

Mike Swick gives unprecedented full access to his entire fight camp for UFC 189 in this new VLOG series. Shot on location in Phuket Thailand, follow Mike as he prepares for the biggest fight of his life and the final attempt to regain his UFC career.

Go behind the scenes with his Cody Garbrandt as he explains his special bond to cancer survivor Maddux Maple, and their promise to each other that continues to motivate him.

An in-depth profile of how Conor McGregor has risen to become the UFC's golden ticket. Filled with great interviews from his inner circle, trace Conor's story from his Dublin birth to the precipice of glory at UFC 189 in Las Vegas, NV.

MetroPCS takes a closer look at Robbie Lawler as he prepares to battle Rory MacDonald in the co-main event at UFC 189 in Las Vegas, NV.

UFC matchmakers Joe Silva and Sean Shelby breakdown key fights for UFC 189: Mendes vs. McGregor taking place in Las Vegas, NV.

Megan Olivi talks to Conor McGregor, Chad Mendes, Robbie Lawler and Rory MacDonald as they take part in open workouts in front of a raucous Las Vegas audience.

Whether his opponent is Jose Aldo, Chad Mendes, or even Mayweather, Conor is confident that he will obliterate them.

A lot of people get tattoos with stories behind them; Conor just got a tattoo because he thought it looked bad-ass. Check out another clip from his recent appearance on CONAN.

Take a definitive look at the the interim UFC featherweight title between Chad Mendes and Conor McGregor with John Gooden and Dan Hardy in Unibet's Inside The Octagon.

UFC featherweight Conor McGregor sits cageside at UFC 179 to watch Jose Aldo and Chad Mendes battle it out for the second time. The Irishman, who is mic'd up, gives his thoughts on the fight. McGregor faces Mendes Saturday night at UFC 189.

Rory MacDonald talks with Megan Olivi about his increased hunger, new versatility, and finding motivation in the face of a loss as he prepares for his co-main event rematch with Robbie Lawler at UFC 189 this Saturday.

Megan Olivi sits down with Robbie Lawler to discuss his training, sharpening his skills, and the business of fighting as he prepares to defend his belt against Rory MacDonald during UFC 189 this Saturday night.

This Saturday night all the talking comes to an end when Chad Mendes and Conor McGregor collide in The Octagon for the interim featherweight title at UFC 189 in Las Vegas, Nevada.

This weekend is packed with two epic UFC events on FOX Sports 1; the prelims for UFC 189 on Saturday at 7pm/4pm ETPT and the finale of The Ultimate Fighter: American Top team vs. Blackzilians on Sunday at 6pm/3pm ETPT on FS1.

In the second episode this week, John Gooden and Dan Hardy take an in-depth look at the co-main event at UFC 189 as Robbie Lawler and Rory MacDonald battle for the welterweight crown.

MetroPCS takes a closer look at UFC featherweight Conor McGregor as he prepares to battle Chad Mendes for the interim 145-pound crown at UFC 189 in Las Vegas, NV.

Fresh from an epic five-rounder with Jose Aldo in their October 2014 rematch, Chad Mendes is eager to start another winning streak. Ricardo Lamas has won two in a row and will look to further his case against Chad Mendes.