UFC Fight Night: Rosas Jr. vs. Barcelos, also billed as UFC Vegas 121 and UFC Fight Night 289, is Saturday, September 26, 2026 at the Meta APEX in Las Vegas. The prelims start at 5 p.m. ET and the main card at 8 p.m. ET, with the whole card streaming on Paramount+ in the United States. Raul Rosas Jr. becomes the youngest fighter ever to headline a UFC card when he meets Raoni Barcelos in a bantamweight main event, and the card also includes both finals from Season 34 of The Ultimate Fighter.
| Date | Saturday, September 26, 2026 |
| Prelims | 5 p.m. ET, 2 p.m. PT |
| Main card | 8 p.m. ET, 5 p.m. PT |
| Venue | Meta APEX, Las Vegas |
| Where to watch | Paramount+ (prelims and main card) |
Main Card (8 p.m. ET, Paramount+)
| Fight | Division | Note |
|---|---|---|
| Raul Rosas Jr. vs. Raoni Barcelos | Bantamweight | Main event, No. 12 vs. No. 13 |
| Rodolfo Vieira vs. Robert Bryczek | Middleweight | Co-main event |
| Mehemmedeli Osmanli vs. Ilimbek Akylbek | Bantamweight | TUF 34 bantamweight final |
| Melissa Amaya vs. Tina Black | Women’s strawweight | TUF 34 women’s strawweight final |
| Brady Hiestand vs. Rinya Nakamura | Bantamweight |
Prelims (5 p.m. ET, Paramount+)
| Fight | Division | Note |
|---|---|---|
| Rodolfo Bellato vs. Christian Edwards | Light heavyweight | Featured prelim |
| Elves Brener vs. Josiah Harrell | Lightweight | |
| Montel Jackson vs. Ricky Simon | Bantamweight | |
| Norma Dumont vs. Ailin Perez | Women’s bantamweight | No. 4 vs. No. 5 |
| John Castaneda vs. Alatengheili | Bantamweight | |
| Mickey Gall vs. Sedriques Dumas | Middleweight | |
| Vanessa Demopoulos vs. Yazmin Jauregui | Women’s strawweight | Opens the card |
About the Main Event
Rosas Jr. is 12 and 1, with a six and one record in the UFC and five straight wins, the most recent a decision over Rob Font at UFC 326 in March. He turns 22 on October 8 and is chasing Jon Jones’ record as the youngest champion in UFC history. Barcelos is a 39 year old Brazilian veteran ranked one spot behind him at bantamweight. It is a five round fight, the first main event of Rosas Jr.’s career.
What Comes Next
The UFC returns the following Saturday, October 3, with UFC 332 at the Delta Center in Salt Lake City.