New York Knicks forward Julius Randle (30) drives toward the basket past Boston Celtics guard Jaylen Brown (7) in the second half of an NBA basketball game, Thursday, Jan. 26, 2023, in Boston. (AP Photo/Steven Senne) AP

BOSTON — Julius Randle had 37 points and nine rebounds, and hit the free throws that gave the New York Knicks the lead for good in a 120-117 overtime victory over the Boston Celtics on Thursday night.

Jalen Brunson added 29 points, seven assists and a game-ending blocked shot for New York, which has won two straight. Immanuel Quickley finished with 17 points.

Boston’s Jaylen Brown had a chance to put the Celtics ahead with 7.6 seconds remaining but misfired on two free throws, forcing the Celtics to foul.

Jayson Tatum, who was voted an All-Star Game starter for the third consecutive season prior to tip-off, finished with 35 points and 14 rebounds. Brown added 22 points and nine rebounds for Boston, which has lost three straight for just the second time this season.

New York led by 13 in the fourth quarter but scored just four points in the final 5:26 of regulation to help the Celtics send the game to OT.

Boston scored the first five points of the extra session. New York responded by scoring the next six, taking a 116-115 lead on RJ Barrett’s 3-pointer from the wing.

Brown nudged the Celtics back in front with a driving layup out of a timeout with 24 seconds remaining. Randle’s two free throws then put New York back in front for good at 118-117.

Boston had a final chance to tie, but Brunson blocked Malcolm Brogdon’s 3-point try.

Tatum hit his first five shots. He struggled in the second and third quarters but had 11 in the fourth quarter to lead Boston’s rally.

The Celtics struggled to find an offensive flow throughout, shooting 41% with 13 turnovers.

The Knicks outscored the Celtics 33-25 in the third quarter and took a six-point edge into the fourth.

The lead grew to 102-89 on a pair of free throws by Miles McBride with just over seven minutes to play. The Celtics charged back and had a chance to win it regulation, but Tatum missed a 19-footer and Robert Williams had his follow shot blocked as time expired.

TIP-INS

Knicks: Randle had a driving, one-handed dunk over Tatum late in the third that was part of a 14-5 run to put New York in front 87-78. … The Knicks outscored the Celtics 48-42 in the paint. … Evan Fournier missed his second straight game (personal reasons).

Celtics: Marcus Smart sat for the third straight game because of a sprained right ankle. Interim coach Joe Mazzulla said Smart is wearing a special sock to help reduce swelling. He remains day-to-day. … Boston hit 7 of its first 9 attempts from the field and led by as many as 15 points in the first quarter. The Celtics finished the quarter by hitting 5 of their final 18 shots, and they held a 60-58 halftime lead. … Tuesday marked the Celtics’ 6,000th regular-season game.