Raul Rosas Jr. Gets First UFC Main Event vs. Barcelos

Raul Rosas Jr. will headline a UFC event for the first time in his career when he meets Raoni Barcelos on September 26 at the UFC Apex in Las Vegas. It will also be the first UFC main event for Barcelos, a 39-year-old Brazilian veteran who is 18 years older than the 21-year-old Rosas Jr.

The bantamweight booking gives Rosas Jr. his biggest test yet as a headliner rather than a supporting act, and it comes at a moment when his stock in the division has never been higher.

Where Rosas Jr. Stands in the Bantamweight Picture

Raul Rosas Jr. enters the Barcelos fight riding real momentum. He's currently ranked in the UFC bantamweight top 15 and has won five of his last six, with his only professional loss coming to Christian Rodriguez back in 2023. His most recent outing was a unanimous decision over former title challenger Rob Font, a result that pushed him further into the contender conversation at 135 pounds. Still only 21, Rosas Jr. became the youngest fighter ever signed to the UFC and the youngest to crack the bantamweight rankings, so a first main event slot fits the trajectory the promotion has been building for him since Dana White's Contender Series.

Barcelos brings a different kind of resume to the cage: experience. At 39, he's fought some of the toughest names in the division and, like Rosas Jr., is stepping into a UFC main event for the first time. That novelty cuts both ways. Neither man has had to carry a full fight week as the top of the poster, and how each handles that pressure is one of the more interesting subplots heading into September 26.

Betting Angle

Expect Rosas Jr. to open as the favorite once lines hit the market, given his age curve, ranking, and the fact he's coming off a win over a name opponent in Font. Barcelos's experience edge is real, but main-event distance and a younger, hungrier opponent with a rankings push on the line typically favor the fighter on the way up. Bettors should watch for how the line moves once fight week starts, since a veteran with nothing left to prove can be live-underdog value if he's still sharp on the feet or on the mat against a grappler like Rosas Jr.

The September 26 card at the Apex won't carry pay-per-view weight, but for the bantamweight division it's a meaningful data point. A win keeps Rosas Jr. trending toward a ranked opponent next, while a loss to a veteran nearly two decades his senior would be a real speed bump in a career that's otherwise moved in a straight line up.

Frequently Asked Questions

Who is Raul Rosas Jr. fighting in his first UFC main event?

Raul Rosas Jr. headlines against Raoni Barcelos on September 26 at the UFC Apex in Las Vegas, marking the first main event of both fighters' UFC careers.

What is Raul Rosas Jr.'s UFC record heading into the Barcelos fight?

Raul Rosas Jr. is 12-1 in his pro career and ranked in the UFC bantamweight top 15, with his most recent win coming by decision over Rob Font.

How old are Raul Rosas Jr. and Raoni Barcelos?

Raul Rosas Jr. is 21 years old and Raoni Barcelos is 39, an 18-year age gap between the two bantamweights.