Portland Trail Blazers guard Damian Lillard, left, dribbles past Boston Celtics center Aron Baynes during the first half of an NBA basketball game in Portland, Ore., Sunday, Nov. 11, 2018. (AP Photo/Craig Mitchelldyer)

PORTLAND, Ore. (AP) — Damian Lillard had 19 points and 12 assists and the Portland Trail Blazers won their fourth straight game, beating the Boston Celtics 100-94 on Sunday night.

Jusuf Nurkic added 18 points and 17 rebounds for Portland. The Trail Blazers have won seven of their last eight games.

Jayson Tatum matched his regular-season career high with 27 points and Kyrie Irving added 21 for the Celtics. They finished 1-4 on their trip.

The Blazers led by as many as 21 points in the game, but the Celtics went on a 13-2 run to start the fourth quarter and pulled to 85-83. Marcus Morris’ 3-pointer tied it at 86 with 7:27 left, but Lillard answered with a basket to keep Portland out front.

The Blazers held on to the lead but Irving’s 3-pointer with 2:55 left closed the Celtics to 92-91. Al-Farouq Aminu answered with a 3-pointer for the Blazers. Aminu made another key 3 that put Portland up 100-94 with a minute left.

Kyrie Irving returned to the Celtics after missing Friday’s loss at Utah because he was at his grandfather’s funeral.

Celtics forward Daniel Theis, who sustained a plantar fascia tear on Oct. 27, was upgraded to “probable” before the game but coach Brad Stevens said he would only be available on a minute restriction. He played for five minutes and had two rebounds.

Lillard’s layup put the Blazers up 23-12 in the opening quarter and Portland led by as many as 12 points before Boston closed the gap to 28-26 on Terry Rozier’s floater. It didn’t last long and Meyers Leonard’s 3-pointer gave Portland a 40-31 lead midway through the second quarter.

Portland went into the break ahead 54-37, led by Nurkic with 14 points and 10 rebounds.

The Celtics got to 61-52 in the third quarter after Tatum’s 3-pointer, but CJ McCollum answered with a 3 for the Blazers. Kyrie Irving’s 3 closed the Celtics to 71-66, one of seven 3-pointers Boston hit in the third.

The Blazers went into the final quarter up 83-70.

The Celtics were coming off a 123-115 loss to the Jazz, which marked Gordon Hayward’s first trip back to Salt Lake City after going to Boston as a free agent in the summer of 2017. Hayward fractured his tibia in the Celtics’ opener and missed all of last season.

Portland was coming off a 116-105 victory over the Los Angeles Clippers on Thursday.

TIP INS

Celtics: Tatum led the Celtics at the break with 13 points. … The Celtics attempted 18 3-pointers in the third quarter. … Boston had a three-game winning streak over the Blazers going into the game.

Trail Blazers: Portland wore its new City Edition jerseys that are black and gray with a diagonal red stripe. … There was a delay to start the second half because something with the south basket was askew. A ladder was brought in to allow arena personnel to adjust it.

UP NEXT

The Celtics head home to host the Bulls on Wednesday.

The Trail Blazers visit the Lakers on Wednesday.