Lorenzen (elbow) could return from the DL at the end of Reds' current nine-game road trip.
The Reds intend to bring Lorenzen back as a reliever. "I think Michael will have games that are a little more closely clustered together," manager Bryan Price said. "And we'll evaluate both of them (Lorenzen and Raisel Iglesias) there at the end and see if they need something else, if there's a box they need to check off or if there's something we're not comfortable with."