#3 Baron Corbin
Not many fans expected Baron Corbin to become a prominent player on SmackDown Live when he was drafted to the blue brand last summer, but he has really come into his own as a monster heel in recent months. From his intimidating presence and excellent mic skills to his solid in-ring ability, Corbin has all the tools necessary to be a world champion before long.
The only thing he needs now is a main event-level program, and pairing him off with John Cena at WrestleMania would certainly cement him as a top-tier talent. Although their latest encounter on SmackDown wasn't anything too special, I'm certain they could produce magic with more time and more storyline support. Corbin winning wouldn't be too likely, but simply sharing a ring with Cena on the one year anniversary of his WWE debut would elevate him to that next level.