Welterweights take center stage Friday at Bellator 222 as Rory MacDonald faces Neiman Gracie in the World Grand Prix semifinals. The main card starts at 10 p.m. ET. MacDonald is a -145 favorite, while Gracie is a +115 underdog in the latest MacDonald vs. Gracie odds. 

Before you make any Bellator 222 picks , be sure to see the predictions from SportsLine MMA expert Kyle Marley. Marley won the first-ever "ToutMaster" UFC betting contest sponsored by MMAOddsBreaker and appears regularly on multiple MMA betting and DFS shows. Over the past year, $100 bettors who have followed Marley's picks are up more than $21,000. 

Last week at UFC 238, Marley told SportsLine members to back Calvin Kattar (-170 ) against Ricardo Lamas +150 in an undercard lightweight bout. Kattar rolled to a first-round knockout and Marley's followers picked up another easy winner.      

Moreover, at UFC Fight Night 151 a month ago, Marley went a stunning 11-1 and netted $100 bettors nearly $1,000 in profit in a single evening! His selections included accurately predicting that Donald "Cowboy" Cerrone (+110) would pull the upset of Al Iaquinta (-130) in the main event. Anyone who has followed Marley's advice is UP HUGE.

At Bellator 222, we can tell you Marley is backing Dillon Danis (-450) to get the best of Max Humphrey (+350) in a welterweight bout.

"This is purely a set-up fight for Danis to get a highlight-reel win. Bellator loves to build prospects by padding their records, and that is what is going on here," Marley told SportsLine.

Marley also has extremely confident picks locked in for MacDonald vs. Gracie and every other fight on this stacked Bellator 222 card. You ABSOLUTELY need to see his picks before making any of your own.

Who wins MacDonald vs. Gracie? And how does each fight end? ... Join SportsLine right now to see which fighters you need to be all over Friday at Bellator 222, all from the incomparable expert who's up more than $21,000 in MMA bets in the last year!