18. LeBron James
James was en route to becoming a Cleveland icon with his electric performances for the Cavaliers. However, he rocked the franchise when he announced “The Decision” and left for the Heat. Fans knew that he threatened to leave his teammates cold but believed he’d stay.
He crushed their dreams of an elusive championship when he departed. It proved to be the right decision at the time because he won a couple of rings in Miami. James returned and achieved redemption with the Cavaliers as he won a title in 2016 (via N.Y. Times).