Boston guard Jeff Teague gets fouled by Atlanta’s Kevin Huerter in the second half Wednesday night at Atlanta. John Bazemore/Associated Press

ATLANTA — Danilo Gallinari set an Atlanta franchise record with 10 3-pointers in a 38-point spree that carried the Hawks to a 127-112 rout of the Boston Celtics on Wednesday night.

Gallinari broke the mark of nine 3-pointers by Steve Smith in a 1997 game against Seattle. The Hawks also eclipsed the overall team record by going 23 of 42 beyond beyond the arc.

Trae Young played like an All-Star, adding 33 points as the Hawks built a 27-point lead in the first half and were never threatened by a lackluster Celtics team that lost its third in a row.

Gallinari, one of the biggest free agents signed by the Hawks in an offseason spending spree, equaled the best scoring half of his career with 24 points over the first two quarters. He finished 10 of 12 from 3-point range and 13 of 16 overall.

Gallinari knocked down jumpers from just about anywhere on the court – most notably swishing a 3 from at the edge of the special MLK Day half-court logo that was used on a night honoring historically black colleges and universities.

The Hawks led 72-49 at halftime and maintained a comfortable margin the rest of the way.

Gallinari turned in his best performance since joining the Hawks. His previous high was 20 points against Indiana on Feb. 13.

It was much-needed rebound for Young and the Hawks, who lost 112-111 at Cleveland the previous night on a last-second shot – just hours after Atlanta’s star guard learned he had been passed over for a spot in the March 7 All-Star Game to be held on his home court.

Young, an All-Star starter in 2020, ripped through the Celtics for 25 points in the first half.

Atlanta was 26 of 43 (60.5%) from the field over the first two quarters, including 13 of 21 beyond the arc.

Jaylen Brown led the Celtics with 17 points.

NOTES: G Kemba Walker didn’t dress in the second game of a back-to-back to help manage his comeback from a left knee injury. … Boston briefly showed signs of life when the Hawks missed their first six shots of the third quarter. The Celtics closed to 73-56, but the Hawks snuffed out the rally with back-to-back 3s by Tony Snell and John Collins.