#3: John Cena
John Cena's WWE career is the stuff of legend. Debuting in 2002, Cena would win his first title, the United States Championship, two years later at WrestleMania 20, and at WrestleMania 21 would win the first of 16 World Championships.
Cena is also a tag team champion, a two-time Royal Rumble winner, and considered one of the biggest Superstars of all time. One thing John hasn't accomplished is being King of the Ring.
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That chink in his armor could be the spark of a big feud between Cena and Corbin, as it may start with the simplest of lines. In a promo, the King could casually mention doing something Cena never did, and Cena could retort on social media. This could kick off an entertaining feud, as well as give the Constable a big push if he goes on to defeat Big Match John.
The pair do have a history, as it was Cena who cost Corbin his Money in the Bank cash-in back in 2017, and one could argue that Corbin would have been a World Champion by now if not for the intervention of Big Match John.