Tristan Thompson of the Celtics is tightly guarded by Cleveland’s Dean Wade during Boston’s 102-94 loss Wednesday night. Tony Dejak/Associated Press

CLEVELAND — Kevin Love scored a season-high 30 points, Collin Sexton added 28 and the Cleveland Cavaliers snapped an 11-game losing streak with a 102-94 win in their home finale over Boston on Wednesday night, locking the Celtics into a spot in the NBA’s play-in tournament.

Boston, which played without starters Kemba Walker and Marcus Smart because of injuries, came in with an outside chance to catch New York for the No. 6 spot in the Eastern Conference standings with only three games left.

But a loss to the lowly Cavs means the Celtics will be involved in the four-team play-in involving the Nos. 7-10 seeds.

Love made six 3-pointers, including two in an 11-0 run early in the fourth quarter, and had 14 rebounds as Cleveland closed out a miserable season at Rocket Mortgage FieldHouse with its first win since April 21.

Jayson Tatum scored 29 points (on 11-of-26 shooting) and Evan Fournier had 15 for the Celtics, who have lost eight of 11 and four in a row.

It was Boston’s first road game since losing All-Star forward Jaylen Brown for the rest of this season because of a torn wrist ligament. Brown’s absence is a devastating blow to the club’s playoff chances, which were beginning to look shaky in recent weeks anyway.

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With playoff positioning on the line, and in need of a confidence boost after a rough stretch, the Celtics were also without Walker (knee management) and Smart (bruised calf), leaving Tatum to carry too much of the offensive load.

The Cavs have dealt with their own injury issues and were without several key players, including starting point guard Darius Garland. He missed his seventh straight game because of a sprained ankle.

Love’s two 3s helped the Cavs open an 80-72 lead, and after the Celtics got within seven, he and Sexton hit consecutive long-range shots to put Cleveland ahead 89-76.

THOMPSON TRIBUTE

Boston’s Tristan Thompson received a warm ovation in his first game back in Cleveland.

The No. 4 overall pick in 2011, Thompson spent nine seasons with the Cavs before signing as a free agent with the Celtics in November.

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“He’s a great person. He’s a great teammate,” said Cavs Coach J.B. Bickerstaff, who appreciated Thompson’s leadership and work ethic. “The legacy here speaks for itself. He’s a guy who this city embraced, obviously, part of a rebuild all the way to a championship. He was there the entire way. His style is respected and appreciated.”

GOOD BYE, GOOD LUCK

The home finale was also a send-off for Cavs center Anderson Varejao and assistant coach Lindsay Gottlieb.

Varejao signed a 10-day contract with the Cavs last week to finish season, returning for a farewell after he spent 11-plus seasons with Cleveland.

Gottlieb is leaving after two seasons to coach at USC.

TIP-INS

Celtics: Coach Brad Stevens said even if Boston was still in the hunt for a higher playoff spot that Walker would not have played. He has sat the second game of back-to-backs all season. “No reason to push it,” Stevens said. … Center Robert Williams received a cortisone injection in his turf toe injury Monday. Stevens said the team is being cautious with the big man, hoping he’ll be available for the postseason.

Cavaliers: In a season of few positives, Garland was a bright spot. The second-year guard averaged 17.7 points and 6.2 points, an increase from his rookie stats (12.3, 3.9). Beyond that, he showed a better understanding of what it takes to be an NBA point guard. “The improvement from his rookie season to his second year, the leap, is almost unheard of,” Bickerstaff said. … Cleveland finished 13-23 at home.

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