Before I say anything else, let me start by saying I'm not worried about the Boston Celtics based on what I've seen over their 1-3 preseason record.
But I am concerned, and the lack of team identity, open barn door on defense, and the offense a Brad Stevens-led team displayed in the 2011 NCAA title game vs. UConn (for those who don't follow college ball, that means very, very bad) are the main reason why.
All the guys who know better are settling for jump shots, playing ISO ball, letting the passing drop and the ball stick.