Matheus Nicolau will take on Alex Perez in the main event of UFC Vegas 91 Saturday. The flyweight event tops the main UFC Vegas 91 fight card (7 p.m. ET) at the APEX Facility in Las Vegas. Nicolau is a -175 favorite (risk $175 to win $100), while Perez comes in at +145 (risk $100 to win $145) in the UFC Vegas 91 odds.

Before making any UFC Vegas 91 picks of your own, you NEED to see the latest MMA predictions from SportsLine MMA analyst Kyle Marley. Over the past three-plus years, $100 bettors who have followed Marley's picks are up nearly $10,000! 

The accomplished MMA analyst has provided consistent winners for SportsLine members for the past five years. His accomplishments include hitting five consecutive main-event underdog winners in 2020 following the UFC's brief pause in action because of the pandemic. Anyone who has followed Marley is WAY UP!

This week at UFC 91, we can tell you Marley is backing James Llontop (-350) to get his hand raised against Chris Padilla (+250) in a lightweight matchup on the preliminary card. "Padilla looks like he needs to wrestle here but on short notice, I don't trust he can wrestle as much as he needs to," Marley told SportsLine.

Marley also has strong picks for Nicolau vs. Perez and other bouts on the UFC Vegas 91 card. He's also backing a fighter who has "dangerous kicks and can hang on the feet" to emerge with a huge victory! You MUST see his UFC Vegas 91 picks before making any of your own.

Who wins Nicolau vs. Perez, and which other UFC Vegas 91 fighters to do you need to back? Join SportsLine now to see which fighters you need to be all over Saturday, all from the expert who's up nearly $10,000 on MMA picks!