#4 Kevin Owens vs. Sami Zayn

This rivalry kicked off with a bang, and their stories remained intertwined throughout their time on the main roster, so it's safe to say that this is one of the best rivalries currently going in the WWE. The night Sami Zayn finally defeated Neville for the NXT title was a huge one, and one of the biggest pops in NXT history, but unfortunately for Sami, it was ruined by his best friend Kevin Owens.
They would go on to have several matches down in NXT, and even though they all ended the same, with KO getting his hand raised, the promos and segments are still some of the best we've seen. Sure, it didn't go on as long as most people would have liked, and that's cost it a higher ranking on this list, but given their overall quality and great storytelling, it's safe to say that this is one of the best in NXT history.