1. Vs. Brock Lesnar - SummerSlam 2014
Brock Lesnar. The Beast Incarnate. The Conqueror. Introduced as The Authoritys dangerous and uncomfortable Plan C, the main event for SummerSlam was set: John Cena vs Brock Lesnar for the WWE World Heavyweight Championship. The last time these two met, Cena took a bloody and brutal beating - but ultimately got the victory. We all knew Cena was in for the fight of his life again this time, however nobody could have predicted what would happen that night. Yes, Brock won, and whilst Lesnar defeating Cena may not be too surprising in of itself, the way in which Lesnar relentlessly man-handled and disposed of Cena was utterly astonishing. Countless punches. Two F-5s. Sixteen German suplexes. With no trademark comeback from Cena in return, no overcoming of odds and no answer to Lesnars brutality, this was the most shocking defeat in John Cenas historic career.