#2 John Cena
John Cena hasn't been announced for the event and just as many people believe he won't show up as there are people that do believe he will. I for one, believe that not only will Cena show up at this year's Royal Rumble, but he will also have a major impact on the show.
While this is not a predictions post on if he will show up or not, it is a reason why it could be his last.
Cena, who is close to breaking the record for having the most title World Title reigns, could have one last run at the title with a Rumble win this year.
Cena will only become busier with Hollywood over the next five years or so and with that said the opportunities of the Cenation Leader being in a Rumble match are growing smaller.
While I don't believe we have seen the last of the former WWE Champion, I don't believe there are many chances left for Cena to be a potential three-time Rumble winner.