Heavyweight Josh Barnett is an Ultimate Fighting Championship competitor once more.

With the loss of UFC 161's planned headliner between Renan Barao and Eddie Wineland, Ultimate Fighting Championship officials looked to add some firepower to the event's lineup. Roy Nelson and Stipe Miocic answered the call.

The International Mixed Martial Arts Federation today announced it has established an anti-doping committee that is focused on enabling its members to meet World Anti-Doping Agency compliance in one year's time.

Next week's Legacy FC 20 event is set with 10 bouts, including a Carlo Prater and Carlos Diego Ferreira headliner, as well as a late change to the evening's main card.

As Invicta FC approaches its sixth event, a trio of female MMA fighters have come forward to accuse a prominent manager of inappropriate behavior, and the manager has stepped to his defense.

As MMAjunkie.com previously reported, UFC interim champ Renan Barao is injured and out of next month's UFC 161 event. With little time to find a suitable replacement, the night's co-feature between Rashad Evans and Dan Henderson has been promoted to headlining status.

Bellator welterweight champ Ben Askren puts his title on the line against Andrey Koreshkov on Wednesday, July 31 as the promotion visits Albuquerque's Santa Ana Center.

UFC interim bantamweight champion Renan Barao is officially out of next month's UFC 161 main event.

Flyweight star Jessica "Evil" Eye is set to return to the cage on June 1 in front of her hometown supporters in Cleveland. In the newest installment of the Women's MMA Report, Robert Sargent discusses that bout and other news and notes from the world of women's MMA.

With his visa issues resolved and his flight completed, Mark Hunt is no longer a question mark for Saturday's UFC 160 co-headliner with fellow contender Junior dos Santos. To prepare for that bout, watch his recent fight with Stefan Struve.

MMAjunkie.com Radio kicks off at noon ET (9 a.m. PT) with Carlos Condit, Fallon Fox, Burt Watson (in studio), Phil Baroni and Lowen Tynanes.

Officials have promised a stacked lineup for the debut UFC on FOX Sports 1 event, though the August show still could use a big-name headliner. However, one notable fighter recently offered his services.

A welterweight bout between Sergio Moraes and Neil Magny is the latest addition to August's UFC 163 lineup.

UFC lightweight Donald Cerrone has developed a reputation as a fighter who works as hard as he plays. Considering how expensive his preferred methods of play can be, he has to.

As a reminder, the UFC's traditional pre-event show returns tonight with the debut of "Countdown to UFC 160: Velasquez vs. Silva" on FUEL TV.

Episode No. 52 of the Co-Main Event Podcast now is available for streaming and download. This week, the fellas look back at UFC on FX 8 and preview Saturday's big UFC 160 event and its heavyweight co-headliners.

Rick Story has been raring to go for this one for a while. The welterweight said he put on his game face for Mike Pyle the minute he heard he was fighting him at Saturday's UFC 160, where he hopes to build toward another long win streak.

UFC welterweight Mike Pyle is a little puzzled as to why a marquee fight isn't in his immediate grasp. He's knocked out his past three opponents, and yet he still seems stuck in the middle of the pack.

It's fortunate for Gray Maynard that his fight against Clay Guida nearly a year ago was a win for him. If not, who knows? "Thank God I got the win on that – because I don't even think I'd be in the sport right now," he told MMAjunkie.com.

Although he's spent more of his life in the United States than in his native Brazil, returning to his home country next month for UFC on FUEL TV 10 still will be a special moment for Raphael Assuncao.