#1 Daniel Bryan's destruction
Daniel Bryan won the WWE World Heavyweight Championship in the main event of WrestleMania 30, by defeating all three members of Evolution on the same night. A remarkable feat by any stretch of the imagination.
Months later, John Cena got squashed by Brock Lesnar in the main event of Summerslam, which was contested for Cena's title. However, this wasn't the original plan for the match though.
Will John Cena beat Ric Flair's record? A former WCW Champion thinks so HERE
Also read: When Brock lost his temper backstage after botching WrestleMania 19 finish
The plan was to have Daniel Bryan meet Brock Lesnar in a "David vs Goliath" match at the Biggest Party of the Summer. Daniel Bryan was injured shortly after WrestleMania 30, and the plans ended up getting scrapped. If Bryan hadn't been injured, he was slated to face Lesnar at Summerslam and would have been squashed by The Beast, instead of John Cena.
In the 2018 Survivor Series pay-per-view, Lesnar and Bryan met in a Champion vs. Champion match, with Bryan almost getting the win over The Beast, before bowing out to an F5.