Boston has established itself as a defensive force. Teams know that when they face off against the green and white that they are in for a fight. That's a great identity to have as defense is an essential cog when it comes to contending.
The problem is that Boston isn't that great at putting the ball in the hoop. How bad are they? They can't even make shots when there is no one around them.
Boston's 89-77 loss to the Cleveland Cavaliers Tuesday night was a great example of this. The Celtics did a superb job keeping LeBron James and company below 90 points, but only managed to score 77 themselves by shooting an atrocious 32.