3 Reasons why Roman Reigns will defeat John Cena at No Mercy and 2 reasons he won't

Won't: Undertaker avenges himself on Roman Reigns

Payback is a b*tch

While we were led to believe that Roman Reigns retired the Undertaker at WrestleMania 33, there has been no official confirmation on the matter so far.

And that means -- as poignant as the Deadman's departing gesture at Mania was -- that he is still as much a part of the roster as any other Superstar and quite capable of popping up again, unannounced.

Although Roman Reigns did win their contest fair and square, the embattled veteran didn't cover himself in glory with how laboured and disjointed he looked -- something he would be, no doubt, itching to re-address.

If you recall, The Undertaker also avenged himself on Brock Lesnar for handing out a defeat to him at WrestleMania 30... what figures that the same fate isn't waiting for Roman Reigns at No Mercy too?