BOSTON – Blake Griffin had one of his worst games. His teammates, led by Clippers newcomer Mo Williams, more than made up for it.

Williams scored 28 points, the most in his five games since being traded by the Cleveland Cavaliers, and Los Angeles withstood a late Boston surge to beat the Celtics 108-103 on Wednesday night for its fourth straight win.

The Celtics, whose last lead was 10-9, were led by Ray Allen with 23 points, Nenad Krstic with 20 and Paul Pierce with 19. They trailed 30-17 after one quarter and lost for the first time in six games since obtaining Krstic and Jeff Green in a trade with Oklahoma City. They’ve added three other players since then.

“It’s a lot of inconsistency,” Pierce said. “Some of that had to do with implementing a lot of new guys but we’ve got to get off to better starts and that’s with the guys that have been here.”

Griffin struggled against a tight Celtics defense and missed easy shots when he was open. He scored 12 points, just two more than his career low, and made four field goals, matching his fewest as a pro. He also missed 10 shots for a .286 percentage, his third-worst, and managed just seven rebounds, his fourth-fewest.

“I know I didn’t play well at all, but I’m more than happy with the win,” Griffin said.

Williams, playing 41 minutes, was 5 of 7 from 3-point range, including two that blunted one of the Celtics’ comebacks.

The Clippers took their biggest lead at 65-42 two minutes into the third quarter. They still led 84-68 with 10:28 left in the game before the Celtics went on a 15-2 run that closed the gap to 86-83 on a jumper by Kevin Garnett with 5:39 remaining.

Los Angeles increased that to 104-93, but Boston had one last comeback, scoring the next seven points to make it 104-100. But it came no closer.

With Griffin struggling, DeAndre Jordan had a season-high 21 points and nine rebounds for the Clippers, and Randy Foye had 12 assists.

“You definitely want to keep the ball out of Griffin’s hands,” Pierce said. “We did focus on their star, but I feel like we forgot about the other guys and those are the guys that beat us.”

The Celtics trailed 60-42 at halftime as the Clippers outshot them 67.6 to 40 percent, despite only six points and one rebound from Griffin.

After Boston cut the lead to 104-100, Pierce missed a 3-pointer and Jordan hit two free throws.

The Clippers iced the game at the foul line.