3 observations about what happened to the Celtics’ spacing after a stellar first half

Marcus Smart had 10 assists in the first half. But the Celtics spacing fell apart and so did the playmaking that served them so well during the first half of Game 1. (Jim Davis/Globe Staff). 8 takeaways as Jimmy Butler helps Heat steal Game 1 from Celtics

Before they got blitzed by a 46-25 Miami run in the third quarter, the Celtics looked like they were in sync offensively.

Marcus Smart dished out 10 assists in the first half, during which the Celtics scored 40 points in the paint. They were enough of a threat from outside to keep Miami on its toes.

But that all came to a rather abrupt stop in the second half. The Celtics began the third quarter leading by nine and were down 12 at the end of…