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Juilanna Peña already has delivered on one bold prediction, and the bantamweight champion plans to do so again when she meets former champion Amanda Nunes on Saturday in the main event of UFC 277. Their rematch highlights the pay-per-view main UFC 277 fight card (10 p.m. ET) from American Airlines Center in Dallas. Peña called for and was granted a title shot against Nunes largely because the dominant former champion had run out of viable challengers. She confidently maintained that she would be the one to beat Nunes and backed up her bold words last December with a second-round stoppage of Nunes. This week, Peña has vowed to repeat the performance, though Nunes is determined to reclaim the belt.

Nunes is the -300 favorite (risk $300 to win $100), while Peña is a +250 underdog in the latest UFC 277 odds from Caesars Sportsbook. The interim flyweight title is on the line in the co-main event as former champion Brandon Moreno (-200) takes on rising prospect Kai Kara-France (+175). Before making any UFC 277 picks, make sure you check out the MMA predictions and betting advice from SportsLine expert Kyle Marley.

Marley won the first-ever "ToutMaster" UFC betting contest sponsored by MMAOddsBreaker and appears regularly on multiple MMA betting and daily Fantasy shows. He watches every single fight for every professional MMA card and does extensive research before each event.

Over the past three-plus years, $100 bettors who have followed Marley's picks are up more than $13,000. The accomplished MMA analyst kicked off the 2022 UFC season in January by telling SportsLine members to support Calvin Kattar (+200) against Giga Chikadze (-240) in the featherweight main event. Kattar's lopsided unanimous-decision victory gave Marley's followers another easy winner. Anyone who has followed him is way up.

Now, he's turned his attention to the UFC 277 fight card and locked in his best bets. You can only see his MMA picks at SportsLine.

UFC 277: Julianna Peña vs. Amanda Nunes preview 

Nunes (21-5) remains the most dominant female champion in the history of the UFC and is one of the all-time greats regardless of gender. She is the only woman to ever hold two division titles simultaneously and the only UFC champion to successfully defend both.

The sinister Brazilian slugger hadn't tasted defeat since losing by stoppage to veteran contender Cat Zingano in September 2014, and few MMA observers believed that streak would end when she met Peña at UFC 269 last December.

Although Peña (11-4) was 5-2 in seven UFC appearances and considered a rising contender, she was widely viewed as a couple wins away from meriting a title shot. But with essentially no other contenders showing interest in fighting Nunes, Peña not only asked for the title shot, but also insisted she would unseat the dominant champion.

Her claims were mostly scoffed at and chalked up to an attempt to generate interest in a fight that might otherwise hold minimal public interest. However, Peña pushed the pace and forced Nunes to retreat and eventually crumble in a fashion previously unseen. Now, the new champion can cement her status as an elite fighter if she can manage a sweep of Nunes. You can see who to back here.

UFC 277 predictions

We'll share one of Marley's UFC 277 predictions here: He is backing Magomed Ankalaev (-475) to get past Anthony Smith (+380) in a battle of light heavyweight contenders that will kick off the main card.

Smith (36-16) is one of the most popular fighters on the UFC roster because of his gregarious nature outside of the cage and his resilience and courage inside of it. The 34-year-old hit a stretch in which he lost three of four but has since rebounded with three consecutive victories.

Ankalaev (17-1) has been pegged as future champion by countless MMA observers because of his lethal power and strong fundamentals. But the 30-year-old Russian's stock has dipped a little because his last three fights have ended in decisions while he has looked tentative to engage against upper-echelon competition.

"Ankalaev is the better striker with more power, and he is the better wrestler as well. I will pick him by decision and use the outcome prop to get better odds," Marley told SportsLine. See who else to pick here.

How to make UFC 277 picks 

Marley also has strong picks for Peña vs. Nunes and every other bout on the UFC 277 card. He's backing a fighter who "has a big edge on the ground" to emerge with a dominant victory. Marley's picks and predictions are only available at SportsLine.

Who wins Peña vs. Nunes? And how exactly does each fight end? Visit SportsLine now to get detailed picks on every fight at UFC 277, all from the incomparable expert who's up more than $13,000 on MMA in the past three years, and find out. 

UFC 277 odds, fight card

See full UFC 277 picks, best bets, and predictions here.

Amanda Nunes (-300) vs. Julianna Peña (+250)
Brandon Moreno (-200) vs. Kai Kara-France (+175)
Magomed Ankalaev (-475) vs. Anthony Smith (+380)
Sergei Pavlovich (-120) vs. Derrick Lewis (+100)
Don'Tale Mayes (-140) vs. Hamdy Abdelwahab (+120)
Alexandre Pantoja (-150) vs. Alex Perez (+130)
Drew Dober (-210) vs. Rafael Alves (+180)
Matthew Semelsberger (-160) vs. Alex Morono (+140)
Joselyne Edwards (-140) vs. Ji Yeon Kim (+120)
Ihor Potieria (-145) Nicolae Negumereanu (+125)
Drakkar Klose (-210) vs. Rafa Garcia (+180)
Orion Cosce (-170) vs. Blood Diamond (+150)