#4 Kevin Owens (Face) vs Sami Zayn (Heel)
Ever since these two men have made their debut in WWE, they have battled each other countless number of times. And we might not be even done yet. But one thing about all their previous encounters was that Kevin Owens was the heel and Sami the babyface. They did have a few matches against each other during their short stint as a heel duo, but it wasn't close to the epic rivalries they had in the past.
Kevin Owens made his return to WWE as a babyface, and just last week it was evident that Sami turned against the fans, signalling that his heel character would continue further down the line. With the superstar shake-up next week, things look possible for another feud between these two premier superstars.
Out of all the suggestions on this list, this match-up is the most likely to happen before the end of this year.