Boston Celtics' Paul Pierce reacts after talking to head coach Doc Rivers during the third quarter of an NBA basketball game against the Chicago Bulls in Chicago, Thursday, April 7, 2011. The Bulls won 97-81. (AP Photo/Nam Y. Huh)

Photo by: Nam Y. Huh

Boston Celtics' Paul Pierce reacts after talking to head coach Doc Rivers during the third quarter of an NBA basketball game against the Chicago Bulls in Chicago, Thursday, April 7, 2011. The Bulls won 97-81. (AP Photo/Nam Y. Huh)