#2 Seth Rollins vs The Undertaker
Seth Rollins is the only member of the SHIELD to not have a singles match against The Undertaker.
The Deadman has had such a tenured and storied role in WWE for decades. The Undertaker has battled against legends like Ric Flair, Triple H, Bret Hart, Hulk Hogan, Shawn Michaels, while also helping build up younger stars Randy Orton and Roman Reigns.
His devotion to his character and the aura around it, and the expectations that come with an Undertaker match, have helped cement the former WWE Champion as a surefire future Hall of Famer.
Seth Rollins can consider himself very unlucky he never got the chance to work with The Undertaker 1-on-1. Rollins is a talent with such a remarkable resemblance to the likes of Shawn Michaels.
And considering what Shawn Michaels and The Undertaker produced in all of their clashes, it has to be said that a star like Seth Rollins would undoubtedly produce the stuff of dreams if he had the chance to face The Undertaker.
In an alternate timeline, fans may have gotten the chance to see Seth Rollins attempt to conquer the famous Wrestlemania streak.
#1 Seth Rollins vs Shawn Michaels
Seth Rollins is a talent with immense charisma and work rate. He crafts each match and into its own story for the benefit of the viewer and produces the nonstop magic when he steps foot into the squared circle.
Seth Rollins has drawn uncanny comparisons to Edge in their feud, with the latter even going so far as to call the former "Edge-lite." But if there is one star that draws the most comparisons to Seth Rollins from past WWE, it is Mr. Wrestlemania.
Shawn Michaels made a career out of instant classics, cinematic storylines and explosive talking points. He retired after a career decorated with championships, accolades and records. Shawn Michaels has his name attached to a variety of iconic rivalries with the likes of Steve Austin, Bret Hart and The Undertaker.
Shawn Michaels was an era-defining superstar, much like Seth Rollins. They are two talents that unfortunately never had the opportunity to stand opposite one another in the ring.
The glory these two could've produced will forever elude the WWE Universe. "What could have been," is the only thing a fan can say when imagining The Kingslayer vs The Showstopper.