Discover John Cena's 10 worst moments in WWE history, from the "Once in a Lifetime" rematch and losing to Kevin Federline, to stifling The Nexus and his planned heel turn.

WWE Raw opened with WWE Champion CM Punk heading to the ring. He hyped the title match at the Royal Rumble then proceeded to lay into John Laurinaitis. He described him as a failure as a wrestler, an ...