Pierce left the game in the third quarter last night with what was diagnosed as a bruised knee. If that's really the case, then it probably stiffened up on him overnight… as bruised knees are wont to do.
I assume they're going to see if he can loosen it up in warmups. They might as well just sit him out tonight since they're off until Wednesday. No point in forcing something at this point of the season.
Photo courtesy Associated Press