#1 Seth Rollins

As we noted in the first post on this list, some superstars have indeed beaten Brock Lesnar before: and Seth Rollins is one of them. Sure, if you want to get technical about it then he actually pinned Roman Reigns at WrestleMania 31 and not the champ, but the history books will always say that Seth managed to get one over on The Beast Incarnate.
Many, many fans want to see a similar type of thing happen again with The Architect winning the Universal Championship, but in our hearts, we all know that it isn't going to come to fruition.
In all likelihood Braun Strowman will cash-in his Money in the Bank briefcase and hold the title up high, or, The Big Dog Roman Reigns will finally get revenge on Brock by beating him once and for all - sending him to the Ultimate Fighting Championship in the process.
WWE made several mistakes with Money in the Bank?