#2 Seth Rollins

Speaking of the Universal Title, Seth Rollins has the opportunity to slay The Beast and bring the Big Red Title back on Raw after months of absence. For almost 2 years now, barring that two month reign for Roman Reigns, The Universal Title has been the sole property of Brock Lesnar, and this has caused a lot of damage,\ to not only the title but the main event scene on Raw as well.
On the other hand, his opponent, Seth Rollins, crawled up the ladder throughout the year with stunning performances, and, in the absence of Roman Reigns and the downfall of Braun Strowman, has emerged as the top guy on Raw. However, Rollins still needs a huge win to solidify his stand as The Guy, and who better to beat than The Beast himself.
Look who just shut down all of Tony Khan's critics! More HERE.
From the way things are looking at this moment, Rollins seems to be the least likely of the three World Title challengers to emerge victorious. However, while Kofi's and Becky's emotional wins would generate moments that would be remembered for a long time, Seth's victory over Brock would not only save Seth from crashing back to the mid card but also help the entire Main Event scene on Raw