#1 Seth Rollins vs. AJ Styles

As far as in-ring work goes, these are two of the best in the WWE and indeed the world right now, and if Seth Rollins does indeed secure the Universal Championship at WrestleMania, Styles as his first challenger would be amazing.
They've faced off and even been on the same side throughout their WWE tenures, but a true rivalry between two greats has never quite happened, and while it means one may have to change brands, it's definitely worth it.
15 shocking wrestling couples - Find out now!
Neither are exactly excelling in the character department, but the WWE care strongly about both men, and when you put them in the ring and allow their work to tell a story, fans will be invested.
This one is probably worthy of being a WrestleMania rivalry, but the WWE can't save all their good rivalries for the biggest stage, and considering they need good content heading into their Fox deal, this is one we could see carrying the torch.
Goldberg ruined Bray Wyatt's career? - Watch now!