Well ahead of their run-in at WrestleMania 40 and their brief alliance during John Cena's retirement tour, he and The Rock clashed both on- and off-screen.

John Cena's year-long farewell tour is set to conclude in just a few days. The Cenation Leader will wrestle his final match against Gunther on December 13 at Saturday Night's Main Event XLII.

John Cena is rarely one to overstep any boundaries between him and the WWE creative team. There have only been a few reported instances of Cena using his lever

The Undertaker has penned a heartfelt message to John Cena on his retirement. The Phenom once explained why they didn't face one another more.