Kemba Walker had 25 points and six assists, and the Boston Celtics took advantage of a late scratch of All-Star Kawhi Leonard and held off the Los Angeles Clippers 117-112 on Tuesday night.

Jaylen Brown finished with 18 points. Jayson Tatum and Payton Pritchard each added 14 as the Celtics posted three straight victories for the first time since January.

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Los Angeles Clippers guard Paul George (13) shoots against Boston Celtics center Daniel Theis (27) as Clippers center Ivica Zubac (40) looks on in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Kemba Walker had 25 points and six assists, and the Boston Celtics took advantage of a late scratch of All-Star Kawhi Leonard and held off the Los Angeles Clippers 117-112 on Tuesday night.

LA Clippers guard Paul George (13) passes the ball after a floor scramble against Boston Celtics guard Payton Pritchard, left, in the second quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Paul George led Los Angeles with 32 points. Reggie Jackson took Leonard’s place in the starting lineup and finished with 25 points and seven assists.

Boston Celtics guard Kemba Walker, left, passes the ball in between LA Clippers forward Nicolas Batum (33) and center Ivica Zubac, right, in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Leonard’s absence comes with Los Angeles on the tail end of a five-game road trip, which concludes Thursday at Washington. He was coming off a game in which he played 37 minutes in the Clippers’ loss at Milwaukee on Sunday.

LA Clippers guard Reggie Jackson (1) passes the ball against the defense of Boston Celtics center Daniel Theis (27) in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

That was still the score when the Clippers got the ball back with 26 seconds left after Tatum was called for an offensive foul for pushing off on George.

LA Clippers guard Patrick Beverley (21) drives to the hoop against Boston Celtics guard Jaylen Brown (7) in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

The Celtics took advantage of not having to contend with Leonard on the defensive end and started the game 9 of 10 from the field to take an early 20-13 lead.

Boston Celtics' Marcus Smart dunks as he warms up before an NBA basketball game against the LA Clippers, Tuesday, March 2, 2021, in Boston. Smart has been out of action for over a month with a torn left calf muscle. While there is no exact date for Smart's anticipated return, it should be some time just after the upcoming All-Star break, according to team officials. (AP PhotoElise Amendola)

Clippers: Lou Williams made a 3-pointer with 1 second left in the third quarter. … Marcus Morris walked off the floor under his own power but did not return after taking an inadvertent elbow from Brown to the head with 46 seconds left in the first half.

Boston Celtics guard Jaylen Brown, left, dribbles up court under pressure from Los Angeles Clippers guard Patrick Beverley (21) in the third quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Celtics coach Brad Stevens said Marcus Smart, who missed his 17th consecutive game with a left calf tear, is getting closer to a return. Smart worked out before the game, doing some shooting and footwork drills. With three practices planned between their first two games following the All-Star break, Stevens said it will give them a better idea of when he’ll be ready.

Boston Celtics forward Jayson Tatum (0) drives against Los Angeles Clippers guard Patrick Beverley, left, and center Serge Ibaka (9) in the third quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Celtics: Host Raptors on Thursday.

Los Angeles Clippers center Ivica Zubac (40) blocks a shot attempt by Boston Celtics guard Kemba Walker in the fourth quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Los Angeles Clippers center Ivica Zubac (40) blocks a shot attempt by Boston Celtics guard Kemba Walker in the fourth quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

The Clippers, who have lost five of eight, played without Leonard after he was ruled out shortly before the game due to back spasms.

Los Angeles Clippers guard Paul George (13) shoots against Boston Celtics center Daniel Theis (27) as Clippers center Ivica Zubac (40) looks on in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Los Angeles Clippers guard Paul George (13) shoots against Boston Celtics center Daniel Theis (27) as Clippers center Ivica Zubac (40) looks on in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Paul George led Los Angeles with 32 points. Reggie Jackson took Leonard’s place in the starting lineup and finished with 25 points and seven assists.

Leonard was listed as a starter before the game, but never took the floor during warmups. The team announced late in the first quarter that he had been ruled out.

He has missed seven previous games this season, including two for a mouth laceration, two while in the health and safety protocols and three for a bruised leg.

LA Clippers guard Paul George (13) passes the ball after a floor scramble against Boston Celtics guard Payton Pritchard, left, in the second quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

LA Clippers guard Paul George (13) passes the ball after a floor scramble against Boston Celtics guard Payton Pritchard, left, in the second quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Leonard’s absence comes with Los Angeles on the tail end of a five-game road trip, which concludes Thursday at Washington. He was coming off a game in which he played 37 minutes in the Clippers’ loss at Milwaukee on Sunday.

In a game that featured 16 lead changes, the Celtics took a 91-89 edge into the fourth quarter. It grew to 111-100 on a layup by Tatum with 4:23 remaining.

A 3-pointer by Jackson and free throw by Patrick Beverley got Los Angeles within 113-109 at the 1:53 mark.

Boston Celtics guard Kemba Walker, left, passes the ball in between LA Clippers forward Nicolas Batum (33) and center Ivica Zubac, right, in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Boston Celtics guard Kemba Walker, left, passes the ball in between LA Clippers forward Nicolas Batum (33) and center Ivica Zubac, right, in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

That was still the score when the Clippers got the ball back with 26 seconds left after Tatum was called for an offensive foul for pushing off on George.

George got the ensuing inbounds pass but missed a 3 off the back of the rim. Robert Williams was fouled and connected on one of his two free throws.

George hit a 3 on the Clippers' next trip to cut it to 114-112. Daniel Theis was fouled, but calmly sank two free throws to help seal it.

LA Clippers guard Reggie Jackson (1) passes the ball against the defense of Boston Celtics center Daniel Theis (27) in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

LA Clippers guard Reggie Jackson (1) passes the ball against the defense of Boston Celtics center Daniel Theis (27) in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

The Celtics took advantage of not having to contend with Leonard on the defensive end and started the game 9 of 10 from the field to take an early 20-13 lead.

But George picked up the offensive slack for the Clippers, scoring 21 points in the opening 24 minutes to put Los Angeles in front 63-62 at the half.

TIP-INS

LA Clippers guard Patrick Beverley (21) drives to the hoop against Boston Celtics guard Jaylen Brown (7) in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

LA Clippers guard Patrick Beverley (21) drives to the hoop against Boston Celtics guard Jaylen Brown (7) in the first quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Clippers: Lou Williams made a 3-pointer with 1 second left in the third quarter. … Marcus Morris walked off the floor under his own power but did not return after taking an inadvertent elbow from Brown to the head with 46 seconds left in the first half.

Celtics: Outscored the Clippers 42-32 in the paint.

GETTING CLOSER

Boston Celtics' Marcus Smart dunks as he warms up before an NBA basketball game against the LA Clippers, Tuesday, March 2, 2021, in Boston. Smart has been out of action for over a month with a torn left calf muscle. While there is no exact date for Smart's anticipated return, it should be some time just after the upcoming All-Star break, according to team officials. (AP PhotoElise Amendola)

Boston Celtics' Marcus Smart dunks as he warms up before an NBA basketball game against the LA Clippers, Tuesday, March 2, 2021, in Boston. Smart has been out of action for over a month with a torn left calf muscle. While there is no exact date for Smart's anticipated return, it should be some time just after the upcoming All-Star break, according to team officials. (AP PhotoElise Amendola)

Celtics coach Brad Stevens said Marcus Smart, who missed his 17th consecutive game with a left calf tear, is getting closer to a return. Smart worked out before the game, doing some shooting and footwork drills. With three practices planned between their first two games following the All-Star break, Stevens said it will give them a better idea of when he’ll be ready.

UP NEXT

Clippers: Conclude road trip at Washington on Thursday.

Boston Celtics guard Jaylen Brown, left, dribbles up court under pressure from Los Angeles Clippers guard Patrick Beverley (21) in the third quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Boston Celtics guard Jaylen Brown, left, dribbles up court under pressure from Los Angeles Clippers guard Patrick Beverley (21) in the third quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Celtics: Host Raptors on Thursday.

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Boston Celtics forward Jayson Tatum (0) drives against Los Angeles Clippers guard Patrick Beverley, left, and center Serge Ibaka (9) in the third quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Boston Celtics forward Jayson Tatum (0) drives against Los Angeles Clippers guard Patrick Beverley, left, and center Serge Ibaka (9) in the third quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Los Angeles Clippers center Ivica Zubac (40) blocks a shot attempt by Boston Celtics guard Kemba Walker in the fourth quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)

Los Angeles Clippers center Ivica Zubac (40) blocks a shot attempt by Boston Celtics guard Kemba Walker in the fourth quarter of an NBA basketball game, Tuesday, March 2, 2021, in Boston. (AP PhotoElise Amendola)