#1 The Undertaker vs CM Punk (WrestleMania 29)
The feud between CM Punk and The Undertaker at WrestleMania 29 deserves to be on the top of this list. The story was personal, and CM Punk took it to another level with his antics. Paul Heyman managed CM Punk at that time, and this story started when The Phenom was paying his tribute to Paul Bearer, who was an integral part of The Deadman's career and had died a few days back due to respiratory issues.
CM Punk interrupted the tribute segment and then stole The Urn, which was held by Paul Bearer when he served as the manager to The Undertaker. The Deadman didn't appreciate this and asked Punk to return the urn, but the 'Best in the World' decided to play mind games with the master of the mind games. He attacked The Undertaker while being dressed as a drude, and threw the urn components on the legend.
The match between them was the highlight of a triple main event at the show, and while CM Punk wanted to be the one in 20 and 1, he couldn't get the job done.
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