#2. CM Punk never headlined WrestleMania
CM Punk was a huge star in WWE, but he never competed in a WrestleMania main event.
Punk competed seven times on The Grandest Stage of Them All. He started his WrestleMania participation in 2007, competing in the Money in the Bank ladder match. Although he lost that match, he won the briefcase twice in a row at the following two WrestleManias.
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In 2010, CM Punk lost a singles match against Rey Mysterio. He also suffered a defeat the following year against Randy Orton. In 2012, he faced Chris Jericho for the WWE Championship, but the bout was not the main event. Instead, John Cena vs. The Rock headlined The Show of Shows.
The following year, Punk had a huge match against The Undertaker at WrestleMania 29. However, the main event spot was reserved for the Cena vs. The Rock rematch for the WWE Championship.
Headlining WrestleMania will remain one of the few things that CM Punk never achieved in WWE.