Here is what Ryback tweeted about the upcoming main event WWE Extreme Rules, which is scheduled on May 19th: First rule of #RybackRules is there are no rules. Change is inevitable. I am on a mission. Target not John Connor, but JC is who I see. — Ryback (@Ryback22) April 20, 2013 Workout tip #1. Hard work always works. In Dublin on zero sleep and legs will be destroyed in gym. You will understand me soon. #RybackRules — Ryback (@Ryback22) April 20, 2013