BOSTON — Isaiah Thomas was one shy of his season high with 29 points as the Boston Celtics torched the New York Knicks to the tune of a 115-87 blowout victory on Friday night.

Thomas has scored at least 23 points in all nine games for the Celtics (4-5), who surrendered 118 or more points in a trio of losses to the Cleveland Cavaliers, Denver Nuggets and Washington Wizards.

Kelly Olynyk scored 19 points and Avery Bradley added 15 for Boston, which held the Knicks to 35.1 percent shooting (33 of 94).

Kristaps Porzingis had 14 points to lead New York (3-6), which lost for the fourth time in six games and has dropped four of its last five meetings with the Celtics.

Carmelo Anthony finished with 12 points for the Knicks, all in the first quarter. He was ejected after picking up a pair of technical fouls late in the first half.

Porzingis and Joakim Noah were also whistled for technical fouls.

Marcus Smart was awarded his first start of the season to help spark a flatlining defense, but instead gave the Celtics a jolt on the offensive end.

The third-year guard from Oklahoma State hit a pair of 3-pointers and scored eight of Boston’s first 19 points as it built an early 11-point lead.

Smart’s efforts on the defensive end were contagious as well, as the Celtics played with energy in forcing four turnovers in the first 5:13.

But the gears started turning for the Knicks as Anthony scored eight during a 19-9 run which brought New York within a point.

Anthony had 12 in the opening period and the Knicks pulled within 31-27 entering the second quarter.

The perennial All-Star’s night would be short-lived, as Anthony was sent to the showers after his double technical with New York trailing 44-38 with 4:44 left before the break.

Anthony was 5 of 8 from the floor in his 12-plus minutes.

Without him, the Knicks struggled to score and the Celtics turned a 61-51 halftime lead into a rout in the second half.

NOTES: Boston C Al Horford (concussion) missed his fifth straight game but will travel to Indiana for Saturday’s contest with the Pacers. “It’s a really good sign,” Horford said. Horford returned to practice Thursday and participated in non-contact activities. F Jae Crowder (left ankle sprain) missed his fourth straight game, but coach Brad Stevens did not provide any updates. … Stevens inserted G Marcus Smart and C Kelly Olynyk into the starting lineup. “Probably our two best defenders,” he said. … New York F Carmelo Anthony doesn’t plan to sit out one half of back-to-backs this season. “I don’t really have any kind of negative effect,” said Anthony, who did so last year as a precaution returning from a knee injury. The Knicks visit the Toronto Raptors on Saturday. … Celtics G Demetrius Jackson was assigned to the Maine Red Claws of the NBA D-League on Thursday. … Boston Red Sox right fielder Mookie Betts visited the Boston locker room before the game. … The Celtics honored veterans in attendance throughout the night in honor of Veterans Day.

Jazz 87, Magic 74

ORLANDO, Florida — Guard Gordon Hayward had 20 points, 10 rebounds and eight assists to lead the Utah Jazz to an 87-74 victory over the Orlando Magic on Friday night at the Amway Center.

The Jazz (6-4), who outscored the Magic 27-10 in the fourth period, won for the third time in four tries on this road trip.

Jazz center Rudy Gobert had 13 points, 13 rebounds and three blocked shots and forward Derrick Favors scored 18 points and grabbed nine rebounds. Rodney Hood scored 13 points, including 11 in the fourth when he sparked their late charge.

The Magic were led Evan Fournier with 21 points and reserve D.J. Augustin had 19 points in 24 minutes. Aaron Gordon, playing as a reserve for the first time this season, had nine points and seven rebounds in 24 minutes.

The Magic, who collapsed down the stretch, made only 3 of 21 shots in the fourth quarter.

Hood, who made only one of seven shots in the first three periods, sparked the Jazz to a 75-71 lead midway in the fourth when he scored seven points in a three-minute stretch.

The Magic led 64-60 going into the final period after the lead changed hands seven times in the third.

The Jazz led 42-38 at halftime, riding another good start from Hayward, who had 13 points, six rebounds and five assists by intermission.

The Jazz led by as many as nine points in the first period when Gobert scored seven points.

The Magic opened the second period with an 8-0 run that included a pair of 3-pointers from Augustin. They built a 34-27 lead, but failed to hold it when they missed seven consecutive shots.

The Jazz were more aggressive early, holding a 27-17 edge in rebounds in the first two periods.

Magic forward Jeff Green started his first start of the season, replacing Aaron Gordon, who played well in a reserve role in the first half. Jazz point guard Dante Exum also got his first start, replacing Shelvin Mack, who had started the past two games in place of injured George Hill.