Best known for his incredible upset win over Georges St. Pierre at UFC 69, stocky welterweight grappler Matt Serra is walking away from mixed martial arts (MMA) after having surgery to remove one of his ribs.

UFC and MMA referee Josh Rosenthal, who was busted for running a marijuana warehouse in Oakland, was able to reschedule last week's drug sentencing in U.S. District Court to July 2, 2013. Not that it's kept him out of the cage, mind you.

Jacob Volkmann says UFC does not treat most of its fighters very well and has a "horrible" healthcare plan. In addition, his salary was barely enough to keep him above "poverty." Let's hope things work out a little better in World Series of Fighting!

Latest UFC 161 fight card line up and rumors for "Evans vs. Henderson" pay-per-view (PPV) event taking place at MTS Centre in Winnipeg, Manitoba, Canada, on June 15, 2013. Check out updated UFC 161 fight card and rumors right here.

Chris Weidman says he nearly signed with Bellator for a two-year deal back in 2011 until 'sneaky' contract clause 'betrayed' him. The good news is, he got a UFC deal instead and will now fight Anderson Silva at UFC 162 on July 6 in Las Vegas.

Gegard Mousasi says a "big name" fight against Vitor Belfort could sway him to make the drop back down to the middleweight division. But that doesn’t mean he’s "scared" to fight the cream of the crop like Jon Jones at light heavyweight.

Josh Barnett next fight? "Warmaster" is no longer a mixed martial arts (MMA) free agent, signing a multi-fight contract to return to UFC "later this year" after more than one decade away because of a failed test for steroids.

UFC 161 fight card update: Roy Nelson vs. Stipe Miocic Heavyweight fight has been added to pay-per-view (PPV) event from MTS Centre in Winnipeg, Manitoba, Canada, on June 15, 2013, to help fill the void left with the Renan Barao injury in main event.

Part two of MMAmania.com's UFC 160 preview breaks down top 4 of 7 under card "Prelims" fights on Facebook on May 25, 2013: Pyle-Story, Nurmagomedov-Trujillo, Bermudez-Max Holloway and Smith-Whittaker from MGM Grand Arena in Las Vegas, Nevada.