Morse is eligible to come off the disabled list on Tuesday, but manager Davey Johnson didn't want to rush him back and felt Thursday was the best time to activate him.
Once Morse is back on the team, the Nationals must take off a player from the 25-man roster. Johnson declined to say who the candidates are.
One has to assume that outfielder Brett Carroll or infielder/outfielder Stephen Lombardozzi are possibilities to leave the team. There is a feeling that Lombardozzi needs to play every day. Carroll is out of options, but has been used only for pinch-running duties.