BOSTON — The Boston Celtics went back and forth with the Chicago Bulls early on, but Jayson Tatum did superstar things to keep Boston in front and the Payton Pritchard landed the knockout punch with a three-point barrage. The Celtics move to 2-1 after a 134-99 win.

The Celtics started out hot, gave up their early lead, and then built another one thanks to five early Jayson Tatum assists and seven quick points off the bench by Hugo Gonzalez . The Boston lead grew to 16, but a 15-2 Bulls run cut it to three. Boston answered with an 8-1 run to get it back to double digits and take a 12-point lead into the half. The three-pointers really started falling in the third, getting the lead up to 30 heading into the fourth. It was elementary from there.

Box Score

WHAT WENT RIGHT

Jayson Tatum did everything again: He finished with 23 points, seven rebounds, and six assists.…