Heavyweight contenders collide in the main event of UFC on ESPN 7 as sixth-ranked Alistair Overeem squares off against No. 14-ranked Jairzinho Rozenstruik on Saturday night. The 12-bout card takes place at Capital One Arena in Washington, D.C. The main card is scheduled for 9 p.m. ET. Overeem is a -120 favorite (risk $120 to win $100), while Rozenstruik is offered at +100 (risk $100 to win $100) in the latest Overeem vs. Rozenstruik odds.

Before you make any UFC on ESPN 7 picks, you need to see the predictions from SportsLine MMA expert Kyle Marley. He won the first-ever "ToutMaster" UFC betting contest sponsored by MMAOddsBreaker and is in contention to win this year's contest. He also appears regularly on multiple MMA betting and DFS shows. Over the past year, $100 bettors who have followed Marley's picks are up nearly $19,000!

At UFC Fight Night 164, Marley accurately predicted that Andre Muniz (-115) would defeat Antonio Arroyo (-105) in a middleweight bout on the main card. Those who have followed Marley are WAY UP.

For UFC on ESPN 7, we can tell you Marley is backing Aspen Ladd (-15) to get her hand raised against Yana Kunitskaya (+130) in a matchup of women's bantamweight contenders on the main card.

"Ladd is the better overall striker and grappler. I like her boxing more and she is more dangerous on the ground," Marley told SportsLine.

Marley also has extremely confident picks locked in for Overeem vs. Rozenstruik and every other bout on the UFC on ESPN 7  card. You ABSOLUTELY need to see his picks before making any of your own!

Who wins Overeem vs. Rozenstruik and every bout at UFC on ESPN 7? And how exactly does each fight end? ... Join SportsLine right now to see which fighters you need to be all over Saturday at UFC on ESPN 7, all from the incomparable expert who's up nearly $19,000 in MMA picks in the last year!