The UFC's loudest prospect meets its quietest wall. On Saturday, September 26, the Meta APEX hosts five bantamweight rounds: Raul "El Niño Problema" Rosas Jr. (12-1, #11, age 21) and his 6.10 takedowns per 15 minutes against Raoni Barcelos (22-5, #13, age 39) and an 88% takedown defense built over fifteen UFC bouts. Norma Dumont (#4) vs. Ailín Pérez (#5) features on the preliminary card. Model lean: Barcelos 57–43. Live on Paramount+ at 8:00 PM ET / 5:00 PM PT.
Get picks for this card — model picks + card previews in your inbox.
Youth and grappling volume against the sturdiest wall in the building: Raul Rosas Jr. (12-1, 6.10 takedowns per 15) meets Raoni Barcelos (22-5, 88% takedown defense) over five rounds at the APEX. Model lean: Barcelos 57–43.
BetOnline is our preferred reference when available. We show the selected source and implied probability; this is not a guarantee of the best price across all books. Check the capture date before treating an estimated edge as current.
Main event
Bantamweight · 5 rounds
Market differences are not a ranking of best bets. Conviction is editorial; a close matchup does not automatically mean poor data.
Fights shown: 12/12 · Analyses available: 0/12
Matchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight preview
Model estimate
Preview
Matchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight preview
Model estimate
Preview
Matchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight previewMatchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight previewMatchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight previewMatchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight previewMatchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight preview
Model estimate
Preview
Matchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight previewMatchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight previewMatchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight preview
Model estimate
Preview
Matchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight previewMatchup preview. Styles, form and paths to victory are broken down on the fight page.
View fight previewDeep Dive
The full story behind UFC Vegas — the narrative, the card spotlights, the questions everyone asks, and how the model reads thin data.
The Story
This UFC Vegas APEX card is a classic timeline test, and the main event is its purest collision. Raul "El Niño Problema" Rosas Jr. (12-1, #11, age 21) owns 6.10 takedowns per 15 minutes and the highest control-time percentage in UFC bantamweight history (56.9%) — including 16 takedowns on Rob Font, the second-most ever in a UFC bantamweight bout. Across from him, Raoni Barcelos (22-5, #13, age 39) is a five-time Brazilian national freestyle wrestling champion with 88% takedown defense — 5 of 41 attempts conceded across fifteen UFC bouts — and a five-fight win streak. It is youth and grappling volume against the sturdiest wall in the building, with the winner moving inside the bantamweight top ten.
MMA Analytics leans Barcelos 57% / Rosas 43% — five rounds extend Barcelos's documented strong-finisher window (his Round-3 output runs at 161% of his Round 1), and neither man has contested a Round 4 in the UFC. The co-main is a women's bantamweight rankings collision: Norma Dumont (#4, 13-3) versus Ailín Pérez (#5, 13-2) in the women's bantamweight co-main. Mickey Gall is off the card; Sedriques Dumas (10-5) meets unbeaten Luis Hernandez (8-0) at 205 on the main card. Rodolfo Vieira vs. Robert Bryczek is now a middleweight preliminary. Each matchup has a dedicated page.
Main Event — Bantamweight
01Rosas Jr. vs. Barcelos
Ranked #11 vs. #13. Rosas brings 6.10 takedowns per 15 into Barcelos's 88% takedown defense — 5 of 41 attempts conceded. Model leans ~57% Barcelos over five rounds.
Full breakdown
Co-Main — Women's Bantamweight
02Dumont vs. Pérez
Official rankings collision moved to the co-main: Dumont is #4 (13-3) and Pérez is #5 (13-2). The model edges Pérez at ~54%, capped by Dumont's schedule and a career-long refusal to lose consecutive fights.
Full breakdown
Main Card — Light Heavyweight
03Dumas vs. Hernandez
Mickey Gall is out. Sedriques Dumas (10-5) meets unbeaten Luis Hernandez (8-0, The Stache) at 205. Hernandez's published line is 11.14 SLpM and 2.5 submissions per 15, with no UFC sample. No win probability is assigned.
Full breakdown
Prelim — Middleweight
04Vieira vs. Bryczek
Rodolfo Vieira (11-5) vs. Robert Bryczek (18-7) moved off the co-main onto the preliminary card at 185. Model leans Vieira ~58% / Bryczek 42%, conviction 5/10.
Full breakdown
UFC Fight Night: Rosas Jr. vs. Barcelos is a UFC Vegas Fight Night on Saturday, September 26, 2026 at the Meta APEX in Las Vegas, Nevada — a 12-fight card headlined by a five-round bantamweight main event. Raul "El Niño Problema" Rosas Jr. (12-1, ranked #11, age 21) brings 6.10 takedowns per 15 minutes and the highest control-time percentage in UFC bantamweight history (56.9%) against Raoni Barcelos (22-5, ranked #13, age 39), a five-time Brazilian national freestyle wrestling champion with 88% takedown defense measured over 41 attempts and a five-fight win streak. The co-main is Norma Dumont (#4) vs. Ailín Pérez (#5) at women's bantamweight. Mickey Gall is out; Sedriques Dumas meets Luis Hernandez at light heavyweight on the main card. MMA Analytics leans Barcelos 57% / Rosas 43%. The main card streams on Paramount+ at 8:00 PM ET (5:00 PM PT).
UFC Fight Night: Rosas Jr. vs. Barcelos streams live from the Meta APEX in Las Vegas, Nevada on Saturday, September 26, 2026, with the main card beginning at 8:00 PM ET on Paramount+. Local Las Vegas time is 5:00 PM PT. Viewers in the United Kingdom and Ireland should expect a 1:00 AM BST start on Sunday, Central Europe tunes in at 2:00 AM CEST, and Abu Dhabi runs at 4:00 AM on Sunday. Prelims begin at 5:00 PM ET / 2:00 PM PT, also on Paramount+. All listed times follow the UFC.com listing and remain subject to broadcast changes; the timezone grid on this page covers ET, PT, BST, CEST, and UAE at a glance.
Main event, bantamweight, five rounds: Raul Rosas Jr. (12-1, #11) vs. Raoni Barcelos (22-5, #13). Co-main, women's bantamweight: Norma Dumont (13-3, #4) vs. Ailín Pérez (13-2, #5). Main card: Sedriques Dumas (10-5) vs. Luis Hernandez (8-0) at light heavyweight, replacing Mickey Gall; Ilimbek Akylbek Uulu (10-3) vs. Mehemmedeli Osmanli (12-1) at bantamweight; Tina Black, billed on some listings as Valesca Machado (15-4), vs. Melissa Amaya (8-0) at women's strawweight. Prelims: Rinya Nakamura (10-1) vs. Brady Hiestand (8-2) at bantamweight; Rodolfo Vieira (11-5) vs. Robert Bryczek (18-7) at middleweight; Rodolfo Bellato (13-3-1) vs. Christian Edwards (8-5) at light heavyweight; Elves Brener (16-6) vs. Josiah Harrell (11-1) at lightweight; Montel Jackson (15-4, #19) vs. Ricky Simón (22-7-1, #27) at bantamweight; John Castañeda (21-8-1) vs. Alatengheili (17-10-2) at bantamweight; Yazmin Jauregui (11-2) vs. Vanessa Demopoulos (11-8) at women's strawweight.
MMA Analytics currently favors Raoni Barcelos at approximately 57% win probability versus Raul Rosas Jr. at 43% for the UFC Vegas bantamweight main event. The lean is the matchup's sturdiest defensive wall ( 88% TDD measured over 41 attempts) against the division's highest-volume takedown engine (6.10 TD/15, 56.9% career control). Round-by-round data makes it worse for the 21-year-old: Rosas's landed-minus-absorbed differential runs +3.8 in Round 1 then turns negative, his striking output is the second-lowest in a 79-man division, and he has never fought past fifteen minutes — while Barcelos is a documented strong finisher whose Round-3 output runs at 161% of his Round 1. Neither man has contested a Round 4 in the UFC, so five rounds extend Barcelos's best window. Conviction is capped by an eighteen-year age gap and a 39-year-old who was dropped in Round 1 five months ago. Full fight pages compare these model probabilities to BetOnline odds.
Yes. Raul Rosas Jr. (#11) vs. Raoni Barcelos (#13) is official as the five-round bantamweight main event at the Meta APEX in Las Vegas. Norma Dumont (#4) vs. Ailín Pérez (#5) is the women's bantamweight co-main. Mickey Gall withdrew; Sedriques Dumas now meets Luis Hernandez (8-0) at light heavyweight on the main card. All twelve fights stream on Paramount+; the card order above reflects the announced bout order and remains subject to change.
UFC experience describes the size of the available sample, not the chance of winning. A short UFC record leaves more uncertainty about how a fighter performs against different styles. Opponent quality, recent changes and missing statistics also matter; five bouts alone do not establish that a prediction is well calibrated.
Limited UFC sample
<3 UFC Bouts
Fewer than three UFC fights. Analysis leans more heavily on pre-UFC performance patterns and fighting style.
Developing UFC sample
3-4 UFC Bouts
Some UFC evidence is available, but a few matchups can strongly influence the averages. Check opponent quality and the limitations in each analysis.
Established UFC sample
5+ UFC Bouts
More UFC observations are available. This does not guarantee predictive accuracy; changes in opposition, injuries and style can still limit the estimate.
Note: All fights receive thorough analysis regardless of UFC experience levels. Analyst conviction is an editorial assessment, not a measured probability or statistical confidence interval.
Yellow marks our forecast favorite. The comparison shows our win estimate against the probability implied by each quote. Gap is in percentage points (pp), includes bookmaker margin, and is not expected return.
| Fight | Fighter A | Win estimate A | Market / implied A | Fighter B | Win estimate B | Market / implied B | Model / market & our read |
|---|---|---|---|---|---|---|---|
| Jr. vs Barcelos🟢 | Raul Rosas Jr. | — | -180 (BetOnline)64.3% implied | Raoni Barcelos | — | +153 (BetOnline)39.5% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Dumont vs Pérez🟢 | Norma Dumont | — | +120 (BetOnline)45.5% implied | Ailín Pérez | — | -140 (BetOnline)58.3% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Dumas vs Hernandez🔴 | Sedriques Dumas | — | N/A— | Luis Hernandez | — | N/A— | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Uulu vs Osmanli🔴 | Ilimbek Akylbek Uulu | — | +231 (BetOnline)30.2% implied | Mehemmedeli Osmanli | — | -279 (BetOnline)73.6% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Black vs Amaya🔴 | Tina Black | — | -220 (BetOnline)68.8% implied | Melissa Amaya | — | +185 (BetOnline)35.1% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Nakamura vs Hiestand🟡 | Rinya Nakamura | — | -335 (BetOnline)77.0% implied | Brady Hiestand | — | +273 (BetOnline)26.8% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Vieira vs Bryczek🔴 | Rodolfo Vieira | — | -145 (BetOnline)59.2% implied | Robert Bryczek | — | +124 (BetOnline)44.6% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Bellato vs Edwards🔴 | Rodolfo Bellato | — | -175 (BetOnline)63.6% implied | Christian Edwards | — | +149 (BetOnline)40.2% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Brener vs Harrell🔴 | Elves Brener | — | +111 (BetOnline)47.4% implied | Josiah Harrell | — | -130 (BetOnline)56.5% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Jackson vs Simón🟢 | Montel Jackson | — | -205 (BetOnline)67.2% implied | Ricky Simón | — | +173 (BetOnline)36.6% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Castañeda vs Alatengheili🟢 | John Castañeda | — | -330 (BetOnline)76.7% implied | Alatengheili | — | +269 (BetOnline)27.1% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
| Jauregui vs Demopoulos🟢 | Yazmin Jauregui | — | -850 (BetOnline)89.5% implied | Vanessa Demopoulos | — | +596 (BetOnline)14.4% implied | Matchup preview Styles, form and paths to victory are broken down on the fight page. |
