#2. Could enter for the first time - Shayna Baszler
If surprises are anything to take into consideration in the Royal Rumble, then it could be Shayna Baszler who could shock the entire world by making her presence known at Chase Field.
Similar to what Andrade 'Cien' Almas did last year, the NXT Women's Champion could make an appearance and run riot with the other 29 female competitors.
Meet John Cena's dad HERE
Currently engaged in a feud with Bianca Blair, there's also a possibility that the Queen of Spades could be dropping the gold to her and make a blockbuster entry at the Royal Rumble.
Entering the Royal Rumble would be a compelling way to bring her to the main roster and if the company is indeed serious about a Four Horsewomen storyline, then this could be the right way forward.
#2. Could enter for the final time - The Undertaker
The Undertaker is possibly one of the greatest wrestling stars of all time and the Phenom is still going strong despite suffering from endless amount of injuries.
However, the curtains could be closing down on the Deadman soon, with many predicting that this could be the very final time that the Undertaker steps inside the squared circle to fight.
Considering that the Phenom is rumoured to lock horns with Finn Balor at the Show of Shows, an appearance at the Royal Rumble could be an iconic way to kick things off.
His supernatural aura always entices the fans and would definitely give a huge boost to the company's current viewership numbers.
While it's a damn shame that the Phenom could be making his final Royal Rumble appearance this year, he will still be remembered for what he has accomplished in the business for generations to come.