The Octagon returns to Perth this Saturday as top-ranked welterweight Jack Della Maddalena squares off against fifth-ranked Carlos Prates in the main event of UFC Fight Night at RAC Arena. With the main card kicking off at 7 a.m. ET on Paramount+, this is a pivotal matchup for both fighters looking to climb the welterweight ladder.

Della Maddalena, 29, is coming off a tough unanimous decision loss to Islam Makhachev at UFC 322 this past November—a fight that snapped his impressive 18-bout winning streak. Now fighting on home soil, the former UFC welterweight champion aims to start a new streak and remind fans why he's been a force in the division since turning pro in 2016. With an 18-3 record that includes 12 knockouts, two submissions, and four decisions, the Australian has proven he can win in multiple ways.

On the other side, Carlos Prates enters with serious momentum. The Brazilian earned a knockout victory over Leon Edwards in his last outing at UFC 322, showcasing the kind of power that makes him a dangerous opponent for anyone. Both fighters are listed at -110 on the money line at DraftKings Sportsbook, reflecting just how evenly matched this welterweight clash appears on paper.

For those looking to make informed picks, SportsLine expert Kyle Marley has been on an absolute tear. Over the past three-plus years, $100 bettors following his picks are up nearly $10,000, and since May 2018, he's returned well over $21,000. Marley's resume includes hitting five consecutive main-event underdog winners in 2020 after the UFC's pandemic pause—a stretch that turned heads across the MMA betting community. He's studied every angle of this Della Maddalena vs. Prates matchup and has released his top betting picks and best bets.

Don't miss this welterweight showdown, which promises fireworks from two fighters with something to prove. For the complete breakdown and Marley's expert predictions, head to SportsLine before the Octagon door closes.