#7 The Undertaker's initial retirement
At WrestleMania 33, The Undertaker lost to Roman Reigns in a No Holds Barred Match. After the match, he left his signature gloves, cloak, and hat in the middle of the ring, a gesture that meant he has wrestled his final match.
Will John Cena beat Ric Flair's record? A former WCW Champion thinks so HERE
The Undertaker also walked over to his wife Michelle McCool after the match, which further proved that he was retiring. It was an emotional moment for the WWE Universe as the greatest character in history ends his career.
This would have been higher on the list if The Undertaker just stayed retired. He returned at WrestleMania 34 to squash John Cena in three minutes. The Undertaker went on to wrestle Rusev at the Greatest Royal Rumble, at a live event at MSG, and against Triple H at Super Show-Down. The Deadman should have stayed retired because it's sad to see him wrestle at this point at the age of 53 years old.