#1 John Cena
Speculation regarding John Cena's retirement isn't new at this point. The Leader of the Cenation has taken the role of a part-time Superstar in WWE since WrestleMania 33 and is currently focusing on his Hollywood career.
Speaking of Hollywood, it was announced last summer that John Cena was becoming a part of the Fast & Furious franchise. It was around this time that Cena mentioned that he too is thinking about retirement in an interview with TMZ while addressing the infamous Goldberg vs. The Undertaker match which resulted in fans calling for them to retire.
"I think an individual's career is up to the individual. I've been having the same conversation with myself and I'm only 42."
Fortunately for us fans though, Big Match John did not call time on his WWE career and we saw him face "The Fiend" Bray Wyatt at WrestleMania 36 in a cinematic Firefly Fun House match, which was nothing short of epic.
His tweet above following the loss to Wyatt has the WWE Universe pondering about his eventual retirement from in-ring wrestling again.