Jaylen Brown scored 10 of his career playoff high 40 points during a first-half surge and the Boston Celtics pulled away for a 126-110 victory over the Indiana Pacers to take a 2-0 lead in the Eastern Conference finals on Thursday night.

After his 3-pointer with 5.7 seconds left in regulation forced overtime in Game 1, Brown helped Boston turn a five-point deficit in the first quarter into a 15-point second-quarter lead.

The Celtics led 42-27 after that 20-0 run and never relinquished the lead.

Indiana missed nine straight shots and committed four turnovers during the drought that lasted more than six minutes. Brown had 10 points during the run and had 24 by halftime.

Jayson Tatum and Derrick White each scored 23 points and Jrue Holiday had 15 with 10 assists for the top-seeded Celtics, who lost Game 2 in both of their previous series this postseason.

The series shifts to Indiana for Game 3 on Saturday night.

Pacers star guard Tyrese Haliburton had 10 points and eight assists before leaving in the third quarter with a sore left leg.

Pascal Siakam led Indiana with 28 points and Andrew Nembhard added 16.

The Pacers got as close as 68-66 on Siakam’s 3 with 7:55 left in the third quarter, but Derrick White and Tatum dunked and White made a 3 a minute later to give the Celtics a 75-68 advantage.

Brown’s 3 with 4:32 to go in the third extended the lead to 80-71 and Indiana would get no closer.