5 Undertaker matches that should have happened at WrestleMania 

#4 The Undertaker vs Mankind: WrestleMania 13 - No Holds Barred Match for the WWE Championship

Mankind

Original match: The Undertaker vs Sycho Sid (C) - WWE Championship.

Upon Mankind's arrival to WWE the night after WrestleMania XII in April of 1996, it seemed like Vince McMahon and WWE had just found The Undertaker's next top rival. It turns out, "Mrs. Foley's baby boy" had fully ditched Cactus Jack and morphed into Mankind to take on WWE's own Grim Reaper.

Mankind and The Undertaker competed in a match at King of the Ring 1996, a Boiler Room Brawl at SummerSlam 1996, a Buried Alive match at In Your House 11: Buried Alive, a match at Survivor Series 1996, a match at In Your House 14: Revenge of the 'Taker, and a Hell in a Cell match at King of the Ring 1998, where Mankind was famously thrown off the roof of the structure.

To the casual and hardcore fan, it seems ludicrous that The Undertaker and Mankind have collided everywhere except WrestleMania, just based on their legendary Attitude Era rivalry alone.

At WrestleMania 13, Mankind teamed up with Vader to take on Owen Hart and the British Bullin a NO DQ tag team match for the titles, while The Undertaker faced Sycho Sid in a forgettable WrestleMania main event that was overshadowed by the legendary Bret Hart vs Stone Cold Steve Austin classic.

With the chemistry the WWE Hall of Famer and The Phenom had, a match between them in the WrestleMania 13 main event would have still been discussed to this day.