Miller missed Washington's game against the Detroit Pistons on Tuesday night, and coach Flip Saunders said Nick Young would replace him in the starting lineup.
Miller left Sunday's loss to the Hornets in the third quarter after aggravating his strained calf. That was only his second game since Nov. 21.
Saunders said Miller "might be out a week or so."
For the Pistons, Tayshaun Prince sat out a second consecutive game with a sore left knee, and Ben Gordon wasn't in the lineup after straining his right groin Monday.