#1. Seth Rollins

Prior to signing with the WWE, Dean Ambrose and Seth Rollins were considered two of the biggest up and coming stars on the Independent circuit with Ambrose rising through the ranks of CZW and Rollins working his magic under Ring of Honor.
Look who just shut down all of Tony Khan's critics! More HERE.
Dean Ambrose and Seth Rollins initially kick-started their feud during their FCW days where they put on some absolutely stellar matches as part of WWE’s then-developmental brand.
Upon their call-up to the main roster, the two men along with Roman Reigns, debuted as part of The Shield and earned an immense amount of success under the faction’s initial tenure.
However, it was in the year 2014-15, when Ambrose and Rollins eventually took their rivalry to the very next level that saw them initially compete in a high stakes match at SummerSlam, 2014 and shortly afterward, Ambrose also found himself on the receiving end of a brutal Curb-Stomp through a pile of cinderblocks.
With Rollins having the back-up of The Authority, which included the likes of The Big Show, Kane, Randy Orton, and J&J Security, Ambrose, on the other hand, was absolutely perfect to portray the role of the anti-authority babyface in this feud, a character which was previously portrayed by ‘Stone Cold’ Steve Austin during the attitude era.
Ambrose and Rollins’ rivalry spelled brilliance and was tremendous through and through in-terms of storytelling, in-ring match qualities, and promos as well.
This feud is certainly bound to go down as one of the most iconic feuds in WWE history and if we get the chance of witnessing Rollins and Ambrose throw it down once again in the near future, then we are surely in for yet another treat from the two very best of this generation.