Paul Pierce has a sprained knee, but it's not going to force him to miss any time. According to multiple reports, shared by CelticsBlog, the Boston Celtics' small forward has a sprained MCL, but is available for Game 6 of the Celtics' series against the Atlanta Hawks. The Celtics lead, 3-2, and can close out the series at home on Thursday night.
Pierce participated in morning shootaround, and there's no indication that he's going to be seriously limited, either in his performance or in his minutes. The Celtics have said that there is no other injury beyond a sprain for Pierce, so there's no reason for him to sit if he's not in serious pain and feels like he can move his knee well. Pierce was the Celtics' co-leader in scoring in Game 5 with 16 points, and he's currently averaging 21.8 points per game in the playoffs.