Glover Teixeira has shed some light on the scary moment that stopped the UFC Vegas 121 main event cold. The former light heavyweight champion, who worked Raoni Barcelos' corner that night, said his longtime friend suffered a swelling in his brain that eventually caused his body to shut down during the fight.

Other outlets framed it a bit differently. MMA Weekly and both reported, citing other sources, that the scare was caused by a traumatic brain injury, which lines up with Teixeira's account even if the terminology varies depending on who you ask.

The fight itself ended badly for Barcelos. Raul Rosas Jr. finished him by TKO/KO in the fifth round at one minute, thirty-eight seconds at UFC Vegas 121, a result that will sting given where both men sat in the bantamweight picture. Barcelos came in ranked No. sits just ahead at number #13 with a 1590 Elo mark over the same number of bouts. The finish only widens that gap.

The moment hit close to home for Deiveson Figueiredo, who has lived through something similar himself. The former flyweight champion, now ranked ninth at bantamweight, described reliving the experience as 'agonizing' when asked about watching Barcelos go down. Figueiredo is coming off a loss to Song Yadong via submission in round 2 and is already looking ahead to his own matchup, booked against Payton Talbott at UFC 332 on October 3. Our model gives him a 14 percent chance in that one, rating it strong confidence, so Figueiredo has plenty on his own plate even as he processes what happened to his friend in the division.