The Cubs placed Morgan on the 15-day injured list Tuesday with a right elbow impingement, Taylor McGregor of Marquee Sports Network reports.
Morgan's elbow forced him to make a premature exit from Monday's game. He'll now be forced to miss another couple of weeks as he moves to the IL, though it remains unknown if he'll require more than a minimum-length stay. Luke Little and Daniel Palencia will come up from Triple-A Iowa to help make up for the loss of Morgan and Nate Pearson, who was optioned to Iowa on Tuesday.