Greene (elbow) threw 52 pitches over a three-inning simulated game Tuesday at Great American Ball Park, Gordon Wittenmyer of The Cincinnati Enquirer reports.
Greene came out of the session feeling great. While the successful sim game should set him up to return from the 15-day injured list to start Sunday against the Pirates, the team has not yet confirmed as much. If Greene does indeed start Sunday, he would be surely be working on a limited pitch count. The right-hander has been shelved since mid-August with right elbow inflammation.