#4 John Cena

John Cena has almost been an afterthought of late, but don't be fooled. Anyone who doesn't think he's eventually going to get his "record breaking" 17th world title win is crazy.
Though he's a free agent, he currently appears on Raw far more than SmackDown, and it's unlikely WWE won't want his name to be on the list of Universal Champions, especially when the "record books" are looming.
Did you know a top WWE Superstar just wrestled outside the company? More details HERE
Cena vs. Braun Strowman will be one more of those "overcoming the odds" stories that have defined his career.
Fans won't be happy about it, but a loss to Cena won't dent the credibility of Strowman, despite Cena's weaker booking of late. It's too much of a trope for WWE not to do it.
Cena will likely main event WrestleMania one more time, carrying the red strap into the biggest show for a rematch with the man who has been groomed to take his spot.