BOSTON, Nov. 16 (Ticker) -- Ray Allen ended a six-game road trip by ending his shooting slump.

Allen scored 18 of his 32 points in the first half as the Seattle SuperSonics completed their trek with a 113-100 victory over the Boston Celtics.

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After scoring 19 points on just 4-of-18 shooting in Tuesday's 109-99 loss at New Jersey, Allen's shooting fell below 40 percent for the season. But he scored 13 points on 5-of-7 shooting in the first quarter, helping Seattle open a 31-28 lead.

"It was a total team effort," said Allen, who made 4-of-6 3-pointers. "I thought everybody played well and I was the catalyst out there in the beginning and everybody just fed off of that."

"Well, Ray got out of his slump," Sonics coach Bob Weiss said. "He was absolutely spectacular and kept us in the game those first six minutes because we could not stop anybody."

The SuperSonics used a 10-2 run at the start of the second period and a 14-5 surge to close it, building their lead to 63-45. Rashard Lewis had 11 points and three steals in the period when Seattle forced seven turnovers and held Boston to 17 points.

"We flowed into our offense," said Lewis, who had five steals. "When we are playing good defense that's what helps us on the offensive end. We can run out and get some easy baskets."

Allen, who made 12-of-17 shots, nailed a deep jumper to halt a surge by the Celtics and give the Sonics a 98-85 lead with 7:15 to play.

Lewis scored 22 points and Nick Collison added 19 and 13 rebounds for Seattle, which had 17 offensive rebounds. Luke Ridnour had 15 points and 14 assists.

"Nick did a good job tonight of boxing out and getting a lot of rebounds and collectively we all rebounded tonight," said Lewis, who had eight rebounds.

Paul Pierce scored 22 points and Ricky Davis added 21 for the Celtics, who have lost back-to-back games for the second time this season.

"The players have to do a better job and I have to do a better job," Celtics coach Doc Rivers said. "When you lose games at home that - to me - I think you should win, everybody has to take the blame."