Jalen Brunson tossed in a game-high 39 points to help the visiting New York Knicks extend their winning streak to three games by beating the Boston Celtics 118-109 Thursday.

Brunson scored six points in the first quarter, 12 in the second and had 21 in the third. He made 15 of his 23 field goal attempts, including 6-of-11 3-point shots from behind the 3-point arc.

New York (48-32) remained in third place in the Eastern Conference standings, one game behind the Milwaukee Bucks (49-31). The Celtics (62-18), who have lost two straight, had previously secured the No. 1 seed in the East.

Donte DiVincenzo added 17 for the Knicks, who got 16 points and 16 rebounds from Josh Hart. Isaiah Hartenstein finished with 11 points, 13 rebounds and six assists.

Jayson Tatum led Boston with 18 points and seven assists. Boston received 15 points from Jaylen Brown and 14 points and eight rebounds from Kristaps Porzingis.

It was the fifth and final regular-season meeting this season. Boston won the first four.

The Knicks led 32-29 after one quarter and outscored the Celtics 37-19 in the second to take a 69-48 halftime lead. Boston trailed 47-45, but New York took control with a 17-0 run and was up 64-45 following a Brunson 3-pointer with 2:18 remaining in the half. The Knicks scored 25 of the final 30 points in the first half.

New York had a 32-17 rebounding advantage through the first two quarters, including a 12-3 edge at the offensive end. Brunson, who has scored at least 30 points in each of his last six games, led all scorers with 18 points in the half.

The Knicks were up 90-71 after the third quarter and had a 31-point lead in the fourth. Boston rested its starters in the final quarter.

New York held a 52-36 edge in rebounds.