On Sunday night, pro-wrestling fans awaited the climax of a narrative that, depending how you count, was either months or decades in the making: John Cena, one of just a handful of active wrestlers whose name is widely recognized by folks who don’t know a turnbuckle from a Titantron, was finally—after more than twenty years as the squeakiest-clean of baby-face wrestling heroes—set to wrestle as a villain. Cena’s rivalry with his opponent, WWE Champion Cody Rhodes (son of Texas wrestling great Dusty Rhodes), began in March, when Cena made his dramatic heel turn at the end of another WWE event. After Cena won the company’s Elimination Chamber match to earn the right to face the champion, Rhodes entered the ring to congratulate the longtime great and…