#3 Not ready: Shinsuke Nakamura
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While his heel turn at WrestleMania 34 was a major upgrade to his character, it still wasn't enough to help him come away with The WWE Title. In fact, Nakamura was beaten convincingly by AJ Styles time after time, which not only affects Nakamura's momentum, but also his credibility as a top talent.
Add in the fact that Nakamura has trouble with promos and getting fans behind him and you have a superstar that is in no way ready for another main event run. Furthermore, as long as his promo's consist of only a few words and creative continues to not believe in him, its only going to get worse as time goes on.
Edited by Sundaresh Kumar