I've become a big fan of Fitch lately. I think he's got a good chance to win the entire thing. Koreshkov and Gracie are his only real threats; Koreshkov can stuff takedowns long enough to land a knockout strike, which Lima, Daley and Page can't say, and his last three losses have been against people with stronger submission grappling than him, like Neiman (he beat Shields by outboxing him, hint-hint).
Ruth and Dynamo don't have the experience to deal with someone like Fitch (if Daley couldn't beat Fitch on the feet, they're not gonna), and Ruth's not gonna be able to hold him in guard for three rounds and earn a unanimous decision like in his other fights. Fitch's strong enough to outmuscle Okami; how's Ruth's athleticism and two-years-in-the-game submission grappling gonna keep him on his back?
Rory will be tough, but if Fitch can beat Koreshkov, he's got a good chance against Rory (they have similar strengths).