I don't know about Kelly at small forward. lol
You may have a point with the set play remark.
I'm beginning to get the feeling that teams are toying with the Celtics in the first half. The Hawks played with no urgency in the first half at all, falling behind by 23 points. They kind of asked the C's to show them what they had.
Then the Hawks in the second half really tightened up the defense, shutting down penetration, tightening up in general, to the games end result.
When things tighten up, it seems no one on the Celtics can get a good look, there offense gets desperate and unorganized.