UFC Vegas 108 main card odds, breakdowns and predictions | X-Factor

This weekend (Sat., Aug. 2, 2025), Ultimate Fighting Championship (UFC) returns home to UFC Apex in Las Vegas, Nevada for UFC Vegas 108. It’s been two months since we last saw the inside of the Apex — did you enjoy those times? Did you savor the interesting match ups? I hope so, because it’s time to strap in for two weeks of mediocrity. The main event fell apart just a few days ago, which cost us the only match up between Top 10 athletes on the entire card! That said, there is a silver lining: we’ll be talking entirely about fighters between Bantamweight and Welterweight today, and those are the good divisions.

Let’s dig into the analysis and predictions of the five main card fights leading up to the main event:

Lightweight: Mateusz Rebecki (-218) vs. Chris Duncan (+180)

Best Win for Rebecki? Myktybek Orolbai For Duncan? Jordan Vucenic
Current Streak: Rebecki won his last bout, while Duncan has won two in a row
X-Factor: Duncan’s submissions are sneaky good
How these two match up: Saturday’s co-main event should be good fun for however long it lasts.

Rebecki is a fireplug of a Lightweight. Already highly experienced and quite skilled by the date of his UFC debut, Rebecki is a formidable puncher, wrestler, and jiu-jitsu player. At 32 years of age, the Polish standout is looking to make his push into the rankings. Duncan, meanwhile, has found a surprising bit of success as an underdog in his five-fight UFC career. He’s aggressive and physically strong, a hard-hitting slugger with a real knack for snatching up the neck.

In this case, however, I’m not sure Duncan’s aggression will benefit him. As Orolbai found it repeatedly, Rebecki has quite an accurate counter left hand. Furthermore, I expected Rebecki to win the wrestling battle, and if Duncan is counting on the guillotine to bail him out … Rebecki doesn’t really have a neck!

In all seriousness, Rebecki has the kickboxing to hurt Duncan and the wrestling to control him. The real question is whether “Rebeasti” finds the finish …

Prediction: Rebecki via submission

Photo by Jeff Bottari/Zuffa LLC

Lightweight: Esteban Ribovics (-258) vs. Elves Brenner (+210)

Best Win for Ribovics? Terrance McKinney For Brenner? Guram Kutateladze
Current Streak: Ribovics lost his last bout, whereas Brenner has lost two in a row
X-Factor: Brenner has taken a lot of damage in recent losses
How these two match up: Another Lightweight match up, another good scrap.

Ribovics is an all-action kickboxer who makes up for a usual height and reach disadvantage with mixed levels combinations and volume. He’s tough as nails and unafraid to throw himself into the fire, pushing a crazy pace that can wilt even experienced opposition. Brenner is no stranger to that strategy! The Brazilian is aggressive to a fault, happy to trade haymakers and submission attempts alike. A team mate of Charles Oliveira, Brenner definitely brings that Chute Boxe mentality into the Octagon.

I see advantages on both sides here. Ribovics is the tighter kickboxer, the man who builds smarter combinations whereas Brenner is a bit more wild and full power all the time. On the floor, however, Brenner has shown slicker submissions, which could become a factor if either man decides to wrestle or lands a knockdown.

An interesting element to consider is that both men are on the shorter side of Lightweight. Usually, they’re forced to close distance, but in this match up, they can trade without having to reach.

Perhaps the standout difference — the one that decides my pick — is speed. Ribovics is more fluid and lets his strikes unfurl faster than his opponent. That quickness edge should help him find his range early and begin setting the tone, forcing Brenner to dig himself out of a hole.

Brenner is game enough to try, but I wouldn’t bet on it.

Prediction: Ribovics via decision

Photo by Jeff Bottari/Zuffa LLC

Women’s Bantamweight: Karol Rosa (-192) vs. Nora Cornolle (+160)

Best Win for Rosa? Yana Santos For Cornolle? Melissa Mullins
Current Streak: Rosa lost her last bout, while Cornolle rebounded in her most recent appearance
X-Factor: Rosa has fought much better competition overall
How these two match up: Somehow, this is a ranked women’s Bantamweight fight.

Karol Rosa is a mean, gritty fighter. She pushes forward, throws in combination, and isn’t afraid of a dirty clinch scrap. Cornolle, conversely, does more of her work at distance. She prefers a cleaner exchange of strikes and is generally bit more difficult to hit. A French Muay Thai champion, Cornolle is still adjusting her game to MMA. Likely, this match up is going to be a question of distance and whether or not Rosa can gain the pocket without getting touched up in the process.

I’m actually going to side with the Muay Thai veteran and slight underdog here. Cornolle knows how to punish an opponent for walking forward into shots, and Rosa demonstrated some pretty mediocre cage craft in her last showing against Ailin Perez. If she just marches forward on a straight line, Cornolle should be able to wear her down with linear kicks and knees.

At some point, Rosa will found her clinch, but Muay Thai champions tend to be pretty good there as well.

Prediction: Cornolle via decision

Photo by Chris Unger/Zuffa LLC

Welterweight: Neil Magny (+170) vs. Elizeu Zaleski (-205)

Best Win for Magny? Johnny Hendricks For Zaleski? Sean Strickland
Current Streak: Magny has lost two straight, whereas Zaleski lost his last bout
X-Factor: Magny has taken a lot of hard shots in his long career
How these two match up: Welterweight OGs will throw down.

Everybody knows Magny’s approach at this stage of the game. As he’s aged, his kickboxing has become increasingly less effective, forcing him to rely entirely on the clinch attack that used to be just part of his offense. For some reason, Magny is hilariously vulnerable to the calf kick — the most popular weapon in all of MMA — and has yet to adapt to it.

Zaleski generally appears to be holding up a little better in his late 30s, though it’s worth-mentioning that he isn’t fighting nearly the same level of opposition. A slick striker, Zaleski loves his Capoeira kicks but is most effective with clubbing power punches.

I’ll confess to being really torn here. On one hand, Zaleski hasn’t beaten anyone particularly good since … undersized, short-notice Benoit Saint Denis in 2021? At the same time, he knows how to throw a calf kick, and that alone could throw off Magny’s whole approach. Magny has the much better wins in recent years, but he just looks so incredibly vulnerable on the feet lately, and Zaleski can still crack.

I’m going to hesitantly side with “Haitian Sensation” here. Magny oughta be tough enough to survive Zaleski’s early offense and savvy enough to find some clinches and survive. As the fight wears on, Zaleski’s strikes will have less pop, whereas Magny’s takedowns and control should grow more effective.

Prediction: Magny via decision

Photo by Jeff Bottari/Zuffa LLC

Featherweight: Kevin Vallejos (-455) vs. Danny Silva (+350)

Best Win for Vallejos? Seung Woo Choi For Silva? Josh Culibao
Current Streak: Vallejos recently won his UFC debut, whereas Silva is 2-0 inside the Octagon
X-Factor: Silva has a significant edge in height and reach
How these two match up: Young strikers are going to try to take each other’s head off.

There’s a bit of Ilia Topuria in Vallejos’ loading up and uncorking of power punches. He boxes very beautifully, putting together kill shots smoothly in combination. At 23 years of age, he’s a blue chip Featherweight prospect, and the only blemish on his record is a decision loss to Jean Silva from two years ago!

Silva, meanwhile, isn’t as highly regarded as Vallejos, but he’s beaten better opponents. A solid boxer in his own right, Silva has good defense in the pocket and some ripping calf kicks to compliment his punching combinations.

This fight could get really interesting if Silva is able to draw it long and start landing to the lead leg. Unfortunately, the difference in speed and firepower feels too large to overcome. The odds are a bit inflated, but there’s real evidence that Vallejos is going to be a top contender a couple years down the line.

He might suffer a prospect loss or two on the path, but Silva doesn’t seem like the guy to upset him.

Prediction: Vallejos via decision

‘X-Factor’ Picks for 2025: 33-20