The point guard was in impressive form as he scored a double-double and forged a match-winning partnership with Jared Sullinger to help Boston end a four-game losing streak.
"It was really good. You just feel like you're really under control, the way that he was playing late," the Celtics coach told reporters after the game.
"And I thought he put a lot of pressure on their defense because they went under almost every pick-and-roll the whole day with him."
The win sees the Celtics sitting in fourth position in the Atlantic Division with a record of 16-33.