#4 The Undertaker vs Shawn Michaels — WrestleMania 26
(First match: Undertaker def. Michaels — WrestleMania 25)
At WrestleMania 26, it was Michaels who retired Ric Flair. Just two years later, it was time for HBK to say goodbye.
Taker/Michaels first clash at WrestleMania 25 is an all-time classic and maybe, the best match in 'Mania history. Their second bout had a lot more riding it on; it was Michaels career vs Taker's streak.
At WM25, their bout was placed in the middle of the show, but this match was rightfully the main event. Due to the stakes, this was the most pivotal match of Undertaker's legendary streak. It was the perfect ending to HBK's career, in the main event of WrestleMania in an outstanding bout.
Michaels has had many chances to return to the ring, but he's rightfully stayed away. He cannot top this finale.