White Sox lefty Carlos Rodon has received an initial recommendation that he undergo Tommy John surgery, Jon Heyman of MLB Network reports on Twitter. He’s headed in for a second opinion before a final plan is set. It was already known that a full ulnar collateral ligament replacement was possible for the 26-year-old southpaw. But that scarcely draws the sting for the Chicago organization, which already lost another of its other top young arms when Michael Kopech underwent the dreaded (but often career-saving) procedure last season. If Rodon does indeed require Tommy John, he’ll be down for the entire remainder of the 2019 season. His rehab would surely stretch into the 2020 campaign as well. The best-case scenario, presuming steady progress on a fairly conservative timetable, would likely be a return next summer.