WALTHAM — About a week ago Doc Rivers and Courtney Lee sat down for a conversation. The coach wanted Lee not to think so much, to be more aggressive, and so he made sure the 27-year-old knew that.

In the ensuing week, Lee has put up some of his best performances in a Celtics uniform, including an exceptional all-around game against the Trail Blazers Friday, crucial with Rajon Rondo serving the first game of his two-game suspension.