Lorenzen (elbow) resumed throwing Saturday, MLB.com's Mark Sheldon reports.
A right elbow strain kept Lorenzen on the DL to open the season, and his rehab process was further delayed by a case of mononucleosis, which caused him to shed 20 pounds. The right-hander is now working to regain stamina and strength after suffering through the illness, but he's still not particularly close to returning just yet. He'll need to face hitters before the Reds consider sending him out on a rehab assignment.