DeMar DeRozan scored 37 points and the Chicago Bulls rallied from a 19-point, second-half deficit on Monday night to beat the Boston Celtics 128-114 and improve to 6-1 for the season.

Zach LaVine scored 26 points and Nikola Vucevic had 11 points, 10 rebounds and nine assists for the Bulls, who outscored Boston 39-11 in the fourth quarter to turn a 14-point lead into a 14-point victory.

Jaylen Brown scored 28 for the Celtics, who have lost three in a row and left their home court to boos. Al Horford had 20 points and 10 rebounds, and Jayson Tatum scored 20 for Boston.

The Celtics led 94-75 with about three minutes left in the third quarter and still had a 103-89 lead entering the fourth. But Chicago scored the first 12 points in the fourth to cut the deficit to two points, 103-101, with just over 8 minutes left.

Ayo Dosunmu, a second-round draft pick who had his first double-digit NBA game with 14 points, hit a 3-pointer with 6:53 left to put the Bulls up 106-105. The Celtics briefly retook the lead before Chicago scored 18 of the next 20 points.

Tatum scored two points on 1-for-8 shooting in the fourth quarter, and Brown was scoreless on just two shots.

The Celtics led 35-31 near the end of the first quarter before DeRozan ran off nine straight points, scoring 11 during a 15-0 run that gave Chicago a 46-35 lead. But Brown scored the next 10 on his own - hitting back-to-back 3-pointers to make it a one-point game.

After Dosunmu's layup, Brown hit another 3, then Smart made one of his own and the Celtics made it an eight-point lead at halftime.

The Bulls visit Philadelphia on Wednesday night.