Heavyweight contenders meet in the main event Saturday of UFC Fight Night as No. 6-ranked Jairzinho Rozenstruik faces No. 9-ranked Augusto Sakai in Las Vegas. The main card from the Apex facility is set for 7 p.m. ET. Rozenstruik is listed as a -130 favorite (risk $130 to win $100), while Sakai is priced at +110 (risk $100 to win $110) in the latest William Hill Sportsbook odds for UFC Fight Night: Rozenstruik vs. Sakai. 

Before you make your UFC Night: Rozenstruik vs. Sakai picks, make sure you see what the ultimate MMA insider, Ian Parker, has to say. 

A former fighter who's been in the industry for 15 years, Parker has managed some of the world's best, including former UFC middleweight champ Chris Weidman, Costas Philippou and Gian Villante. Parker trained alongside UFC Hall of Famer Matt Serra. Now, Parker breaks down fights and makes betting picks for the Voice of the UFC, Jon Anik.

Parker is coming off a mind-boggling 2020 season. On the Anik & Florian Podcast, Parker went an astounding 58-14, returning $9,465 to $100 bettors who followed him. He hit 11 of his 17 underdog picks and 19 of 30 main events. Overall, Parker nailed an astonishing 81 percent of his plays. 

Over the past three UFC Fight Nights, Parker has gone 19-6 to give his followers a profit of nearly $1,400! Two weeks ago, his winners included telling SportsLine members to back Rob Font (-115) against Cody Garbrandt in the bantamweight main event. Anyone who has followed him is WAY UP! 

Now, he's turned his attention to  UFC Night: Rozenstruik vs. Sakai and locked in his top picks. If you parlay them together, you're looking at a payout of more than 10/1!

For UFC Night: Rozenstruik vs. Sakai, we can tell you Parker is backing Roman Dolidze (-140) to get his hand raised against Laureano Staropoli (+120) in a clash of middleweight prospects on the main card.

"The biggest difference will be the grappling of Roman Dolizde," Parker said. "He has solid striking but is known for his takedowns and his heel hooks. The path to victory for Dolizde is to avoid the striking game of Staropoli and to take the fight to the ground immediately."

Parker also has strong picks for Parker also has strong picks for Rozenstruik vs. Sakai and other top fights on the UFC Fight Night card. He is also backing one fighter who "has the advantage in striking, grappling and cardio." You ABSOLUTELY need to see his picks before locking in any UFC Night: Rozenstruik vs. Sakai bets.

Who wins Rozenstruik vs. Sakai? And which fighter is a MUST-BACK? ... Join SportsLine right now to see which fighters you need to be all over at UFC Fight Night, all from the ultimate MMA insider who returned nearly $9,500 last year!