"We can't afford to play such bad defense — especially against this type of team," Bargnani said. "One day we play good defense and then there are games like today where we play very bad defense, so I can't say it's getting better. We have to focus more and give a better effort."
The Celtics scored 11 straight over the end of the third quarter and first few minutes of the fourth to go up by 21 points.
Chris Wilcox dunked an alley-oop on Rondo's 19th assist, then Terry made another 3-pointer to put Boston up 79-64 entering the fourth.
Rondo left the game shortly after reaching 20 assists early in the fourth. He also had 20 assists against Philadelphia on Nov. 9.
After trailing by as much as 17 in the first quarter, Toronto regrouped in the second and chipped into the lead with a 13-4 run. Lucas' 3-pointer with 2:35 left pulled the Raptors to 42-39, but Pierce had a three-point play and the Celtics led 47-42 at halftime.
Boston was still out of sync early in the third and a few fans started booing when DeRozan's layup pulled Toronto to 55-53 with 6:38 left in the quarter.
Bargnani got Toronto close again with a pair of free throws, 63-61, with 3:30 left in the third. But Terry hit two 3-pointers as Boston went on an 11-1 run.
Notes: Toronto was coming off a win at Indiana on Tuesday night and has yet to win back-to-back games this season. ... Boston was playing for the third time in four days and has a game at Detroit on Sunday night. ... Sullinger's previous highs in his brief career were six points and seven rebounds. ... Calderon had nine of Toronto's 22 assists. ... Boston tied its season high for points, matching its total in a 120-107 loss to Miami in the opener.