#3 The Undertaker vs. Aleister Black

In many ways, Aleister Black is the second coming of The Undertaker. He possesses a similar mystique, and his hard-hitting styles look as realistic as The Undertaker's.
Black is rumoured to be called up to main roster any time soon, and what better way for him to make a debut than facing The Undertaker at The Grandest Stage Of Them All. The Undertaker can give an open challenge on RAW or SmackDown, and Aleister Black can be the Superstar to accept the challenge and set up this feud beautifully.
It is heavily being rumoured that match at WrestleMania 35 will be the last time the WWE Universe sees The Undertaker appearing in in-ring competition. The Phenom can bid adieu by putting over a young star in a retirement match at Mania. This feud is highly anticipated by the fans too.