UFC Vegas 121: Rosas Jr. vs. Barcelos Pre-Fight Analysis

Twelve fights at the Meta APEX on Saturday, and two facts shape the whole card. Seven of the 24 fighters have not competed in more than a year, three of them not since 2024. Four are making their UFC debut, and because those four are matched against each other in the two Ultimate Fighter finals, there are two bouts on the main card where the Octagon record has nothing to say at all.

The other thing worth noticing is how tangled the roster is. Raoni Barcelos headlines against Raul Rosas Jr. having beaten both Montel Jackson and Ricky Simon, who fight each other on the prelims. Jackson knocked out Da'Mon Blackshear, and Blackshear beat Alatengheili in the fight Alatengheili has spent 17 months away from. Muin Gafurov handed Rinya Nakamura his only UFC loss and lost to John Castaneda. Joselyne Edwards beat Norma Dumont in April and lost to Ailin Perez in 2024, and Dumont and Perez meet here.

The main event is scheduled for five rounds, which neither man has ever fought. Rosas is 21 and headlining. Barcelos is 39 and on the longest winning run of his career.

Here is how the card reads, first fight to last.

Vanessa Demopoulos vs. Yazmin Jauregui

Jauregui opens the night against a striker she should out-volume. She lands 6.64 significant strikes per minute to Demopoulos's 3.37, defends at 54 percent against 41, and carries a five-inch reach advantage. The complication is that she has not fought since September 14, 2024, when Ketlen Souza submitted her in the first round at UFC 306. That is 739 days.

What the numbers underline is how little grappling Jauregui has shown. In five UFC bouts she has not attempted a single takedown. She has faced eight and stopped all eight, though eight attempts is thin evidence either way. Demopoulos has landed three takedowns from 29 attempts and has been taken down 13 times from 18. Her one Octagon submission win came by armbar from guard.

Demopoulos is 38, has lost three straight, and fought at flyweight last time out. If this stays standing, the output gap is stark. Whether Demopoulos can make it something other than a striking match is the question the first fight of the night asks.

Mickey Gall vs. Sedriques Dumas

Gall returns after 676 days away and moves up two weight classes to do it. All 13 of his UFC appearances have been at welterweight. His numbers describe a 170-pounder, and there is nothing on record for how he carries 185.

The submission threat is specific. Five of his six UFC wins are rear naked chokes, four of them in the opening round. What has changed is everything around it. He has lost four in a row, and opponents have landed 10 takedowns on him from 16 attempts. A grappler who can no longer dictate where the fight happens is in a different business than the one who choked out Sage Northcutt.

Dumas brings a five-inch reach edge and a pattern of his own. Three of his five UFC losses came by submission, two of those guillotines, and the most recent was a first-round D'Arce choke against Jackson McVey in April. Two fighters whose recent results run through the same vulnerability, from opposite sides of it.

John Castaneda vs. Alatengheili

Alatengheili has been gone 515 days, since a decision loss to Da'Mon Blackshear in April 2025. Blackshear is also the man Montel Jackson knocked out in 18 seconds, two fights later on this card.

Castaneda is the more active striker, 4.95 landed per minute at 51 percent accuracy with five inches of reach on his side. Alatengheili absorbs 5.12 per minute and lands at 32 percent, a difficult pair of numbers to carry against someone who throws as much as Castaneda does. His route has been the takedown, 14 landed from 32 attempts.

Both men are 34 and both carry a draw on their UFC record. Castaneda's came in April, a majority draw with Mark Vologdin after a point deduction. One caveat on reading his rate stats: three of his nine UFC bouts were contested at catch weight and one at featherweight, so the sample is not purely a bantamweight one.

Norma Dumont vs. Ailin Perez

Two fighters who have spent years beating the same opponents. Both hold wins over Karol Rosa and Ashlee Evans-Smith. Dumont lost a split decision to Macy Chiasson in 2022, and Perez beat Chiasson in February. Perez beat Joselyne Edwards in 2024, and Edwards beat Dumont in April.

Stylistically they are opposites. Dumont is a volume striker who does not chase finishes: 3.85 landed per minute at 50 percent accuracy, 64 percent striking defense, and no submission attempts at all across 178 minutes of Octagon time. Perez grapples, with 29 takedowns from 59 attempts, 4.90 per 15 minutes, and 44.6 percent of her cage time spent in control.

Dumont has gone to a decision in 11 straight fights, every one since Megan Anderson knocked her out in February 2020. Perez arrives on six consecutive wins, her only loss a rear naked choke at featherweight in 2022. Dumont has a six-fight run of her own behind the Edwards loss, three of those at bantamweight and three at featherweight.

Montel Jackson vs. Ricky Simon

They fought before, at UFC 227 in August 2018, in Jackson's UFC debut. Simon won a unanimous decision and landed seven takedowns doing it. Eight years later the same question arrives with far more evidence behind it.

Jackson has been taken down 30 times from 91 attempts faced. He has also scored 12 knockdowns in 13 bouts while absorbing 1.40 significant strikes per minute, the profile of a counter-puncher who rarely gets touched and hurts people when he lands. Simon is still the wrestler: 55 takedowns from 147 attempts, 4.49 per 15 minutes, across 216 minutes of cage time.

Both men's most recent loss came against Barcelos, who headlines. Jackson dropped a split decision to him in April, Simon a unanimous decision in November. Simon's last outing after that was a majority draw with Adrian Yanez. Whether eight years changed the answer to the takedown question is the whole fight.

Elves Brener vs. Josiah Harrell

Harrell has three minutes of UFC cage time. That is the entire record, a first-round TKO loss to Jacobe Smith in February, at welterweight. He drops to lightweight here, and every rate figure attached to his name comes from those three minutes, which makes all of them useless as a description of how he fights.

Brener has 76 minutes across six bouts and a clear shape to his game. He lands 4.76 per minute at 47 percent, absorbs 5.86, and has landed five takedowns from 30 attempts. He also has four inches of reach and three straight losses, to Myktybek Orolbai, Joel Alvarez and Esteban Ribovics.

His three UFC wins came by punches at distance twice and a split decision once, and his one stoppage loss came to knees in the clinch. A fighter with a known profile against one we have almost no read on.

Rodolfo Bellato vs. Christian Edwards

Edwards took this matchup once already. He stepped in against Modestas Bukauskas in May when Bellato was out, fought at a catch weight in his UFC debut, and lost a split decision. Now the original pairing happens.

Bellato's record carries two bouts with no winner, a no contest against Paul Craig ended by an illegal upkick and a majority draw with Jimmy Crute. When he has won, he has done it from top position, with stoppages over Ihor Potieria and Luke Fernandez. He throws 5.37 per minute at 60 percent accuracy and absorbs 5.86, an aggressive trade to be making at light heavyweight.

Edwards is two inches taller with three more inches of reach. One point worth stating plainly: he has never faced a takedown attempt in the UFC, so his takedown defense is not a number at all. With 15 minutes of Octagon time, most of what we think we know about him is still theory.

Brady Hiestand vs. Rinya Nakamura

This bout was booked for UFC 298 in February 2024 and fell apart when Hiestand withdrew injured. He has not fought since June 15, 2024, which is 830 days before Saturday.

Both men are 3-1 in the UFC and both win the same way. Hiestand controls 47.4 percent of his cage time, Nakamura 52.6 percent. Hiestand has landed 18 takedowns from 39 attempts and attempts 1.10 submissions per 15 minutes; Nakamura has landed seven from eight and attempts 1.40. Where they diverge is on defense. Nakamura absorbs 1.72 significant strikes per minute, Hiestand 3.75.

Hiestand has three inches of reach and fights orthodox against a southpaw. Both of his UFC finishes came in the third round, a rear naked choke of Garrett Armfield and ground strikes against Batgerel Danaa, which says something about how he closes fights. Nakamura's only Octagon loss came against Muin Gafurov, and his last appearance was a first-round body kick that folded Nathan Fletcher.

Melissa Amaya vs. Tina Black

The first of two Ultimate Fighter finals, and the record has nothing on either woman. Both make their official UFC debut here, so there are no rates, no control figures, and in Amaya's case no recorded height or reach.

What we know comes from outside the Octagon. Amaya is 8-0 and 31 years old. She finished Anna Melisano and then GiGi Canuto to reach the final. Black, who also competes as Valesca Machado, is 30, has held titles in Invicta and A1, and lost to Piera Rodriguez on the Contender Series in 2021. She stopped Natalia Alves in the second round and outpointed Benouaich on her way here. Her professional record is reported inconsistently across sources, so it is not stated here.

Bouts on the show are exhibitions and do not enter professional records. What that means in practice is that two fighters who have just had a full camp and several fights this year arrive with a blank Octagon sheet.

Mehemmedeli Osmanli vs. Ilimbek Akylbek

The second final, and the same blank sheet. Neither man has UFC data, height, reach or stance on record.

Osmanli is 12-1 with stoppages in 10 of his 12 wins, eight of them by submission. He submitted Belakh in the quarterfinal and then caught Christian Strong with a buggy choke in the semifinal, which coverage described as the first of its kind on the show. Akylbek is from Kyrgyzstan, turned professional in 2021, won an Octagon League title and went 1-2 during a run in ONE Championship. He took a decision over Sean Mora.

They trained under Michael Bisping on the same team and had to be separated during a session on the show. Whatever read exists on this fight comes from six weeks of television, not from anything measurable.

Rodolfo Vieira vs. Robert Bryczek

Vieira's UFC career has been built on submissions. Five of his six wins came that way, three by arm triangle from mount, and four of the five ended inside two rounds. Getting there has been the problem. He has landed 22 takedowns from 99 attempts, a conversion rate that tells you opponents have known exactly what was coming for years.

He is 37 and has lost three of four, including back-to-back losses for the first time in his career, a head kick from Bo Nickal in November and a decision to Eric McConico in April.

Bryczek has three UFC bouts and 42 minutes, two inches of reach, and 37 percent striking accuracy against Vieira's 54. He has faced 14 takedown attempts and stopped 10 of them. His one Octagon win was a third-round stoppage of Brad Tavares. Whether a grappler who converts one attempt in five can still find the one that matters is the fight.

Raul Rosas Jr. vs. Raoni Barcelos

Rosas controls 56.9 percent of the time his fights spend in the cage. He has landed 32 takedowns in seven appearances at 54 percent accuracy, and he does it while landing only 1.34 significant strikes per minute. Almost everything he has accomplished in the UFC has happened on the mat.

Barcelos has allowed five takedowns from 41 attempts faced. He lands 4.65 per minute at 51 percent accuracy with 60 percent striking defense, and he has beaten Payton Talbott, Cody Garbrandt, Ricky Simon and Montel Jackson across his past four fights, every one by decision.

One detail worth sitting with. Opponents have attempted three takedowns on Rosas in seven fights. Not three per fight, three in total, two of which landed. Nobody has tried to wrestle him, which means the most-asked question about his game has almost no evidence behind it in either direction. Rob Font did attempt one in March and did not get it, in a fight where Rosas landed 16 of his own.

Neither man has fought a five-round bout. Rosas turns 22 in October. Barcelos is 39 and has spent the past two years proving that a slower, sharper version of himself beats the division's younger strikers. Saturday asks whether it beats a wrestler nobody has tried to test.

If you want to see the predictions for the card, visit mmafightadvisor.com/predictions, and for head to head comparisons on every fighter on it, visit mmafightadvisor.com/stats.