#1 The Rock vs Roman Reigns
The Rock has been heavily rumored to make a stunning comeback to the ring in recent weeks. In fact, recent betting odds suggest that he is the leading favorite to win the Royal Rumble match.
If The Rock is to return to the ring, a feud with his cousin should be the most logical step for him.
Roman Reigns is the current Universal Champion, and it's a possibility that a match between the two Anoa'i family members could take place at WrestleMania for the Universal Championship. However, that seems extremely unlikely.
Reigns would have to turn heel for this match as there's no chance he'll be cheered over the popular Brahma Bull. This match has the appeal of the The Rock vs John Cena, a match that took place at the highest grossing WrestleMania of all time. The Rock vs Roman Reigns would be the biggest main-event in recent memory.