#3. Could enter for the first time - Lars Sullivan
Despite the reports suggesting that Lars Sullivan could be in trouble after not showing on his scheduled dates with the WWE, the company could still be looking to push him to the moon once he finds it fit to appear.
Considering that the company is handling the situation very well, there's a genuine possibility that Sullivan could be making his main roster debut with the Royal Rumble.
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He is rumoured to lock horns with John Cena at WrestleMania 35, and this could be the right time for the company to push the envelope with this feud.
There's no denying that Vince McMahon definitely sees a star in Lars Sullivan and will definitely push him to toss as many competitors as possible to ascend him to the top as a force to reckon with.
#3. Could enter for the final time - John Cena
John Cena is arguably the greatest performer in the wrestling business and could be entering Chase Field for the final time as a participant in the Men's Royal Rumble.
The Cenation Leader has currently shared some verbal altercations with Drew Mcintyre and is rumoured to square off against either him or Lars Sullivan at the Grandest Stage of Them All.
While Cena is always a strong contender to win the Royal Rumble, his part-time schedule has made it difficult for him to continue the tedious schedule of a full-time wrestler.
Considering that he is more involved as an actor in Hollywood, this could very well be the final time that the 16-time World Champion enlightens the crowd with his magnetic presence.