BOSTON — Avery Bradley matched his season-high with 27 points, and the Boston Celtics earned their fourth straight victory with a 111-103 win over the Denver Nuggets on Wednesday night.

Kelly Olynyk added 17 points and seven rebounds. Isaiah Thomas finished with 16 points and five assists.

The victory ties a season-high win streak for the Celtics.

Boston took a 15-point lead into the fourth quarter on a last-second 3-point play by Olynyk to end the third.

The Celtics kept attacking, scoring the first seven points of the quarter and growing their cushion to 22 points.

Danilo Gallinari and Will Barton led Denver with 23 apiece.

The Nuggets lost for the fourth time in five games.

They got within 10 points on a dunk by Kenneth Faried with about five minutes remaining. But the Celtics went on a run again to help secure the win.

Boston led by as many as 13 in the first half, thanks largely to the outside touch of Bradley. He was 8 of 13 from the field and finished the half with 5 3-pointers.

It picked up the slack for the rest of his teammates, who shot just 11 for 35 combined.

The Nuggets didn’t help their cause with 15 turnovers. Their giveaways led to 15 Boston points.

TIP-INS

Nuggets: Gallinari has scored 20 or more points in 10 of his last 13 games. … Have lost 16 of their last 18 on the road to Boston.

Celtics: Went on an 18-1 run after Denver closed to 75-70 in the third quarter. … Improved to 22-11 this season when scoring 100 or more points. … Improved to 7-7 vs. the Western Conference.