#2 Seth Rollins and Sami Zayn
Despite squaring off against each other multiple times, Seth Rollins and Sami Zayn have never been involved in a deeply personal rivalry that could take WWE by storm.
While both the superstars share an incredible friendship, they followed different careers and often catch up whenever possible, outside of the business.
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Both versatile competitors also joined hands to talk about metal music in a brilliant podcast with Chris Jericho, and expressed their humble beginnings and friendship.
There's no denying that both of them are equally agile, with Zayn being a more natural baby face and Seth Rollins acting as a more natural heel.
Since these two can deliver pretty insane matches, booking them in a feud could rejuvenate Sami Zayn's career and ascend him on the level of a main-event threat.