The Houston Rockets stayed alive in the NBA playoffs with a 115-96 rout of the Los Angeles Lakers Sunday, while San Antonio’s Victor Wembanyama made a triumphant return to push the Spurs to the brink of advancing.

Amen Thompson scored 23 points to fuel the Rockets, who bounced back from a crushing overtime loss Friday to cut the deficit in their best-of-seven Western Conference series to 3-1.

The Spurs and the Boston Celtics took commanding 3-1 leads in their series, San Antonio rallying from 19 points down to beat the Trail Blazers 114-93 in Portland and Boston thrashing the 76ers 128-96 in Philadelphia.

In Toronto, the Raptors edged the Cleveland Cavaliers 93-89 to level their series at two games apiece.

Denied a sweep in Houston, the Lakers can still finish off the Rockets when they host game five Wednesday.

The Rockets, still without star Kevin Durant, harried the Lakers into 24 turnovers, yielding 30 Houston points.

Four-time NBA champion LeBron James made just two of nine attempts from the floor on the way to 10 points. He handed out nine assists but made eight turnovers.

With Los Angeles still missing their top scorers in injured Luka Doncic and Austin Reaves, center DeAndre Ayton led the Lakers with 19 points and 10 rebounds.

But Los Angeles were already down by 19 when he was ejected in the third quarter after catching Rockets center Alperen Sengun in the head with his forearm.

Tari Eason added 20 points and Sengun scored 19 for Houston, who are trying to become the first NBA team to rally from a 0-3 deficit to win a playoff series.

In Portland, Wembanyama returned after missing one game because of a concussion and scored 27 points with 11 rebounds, three assists, four steals and a whopping seven blocked shots.

"I had lots of emotions in me before the game, obviously," said Wembanyama, named the 2026 NBA Defensive Player of the Year and in the running for Most Valuable Player.

"Excitement, frustration, so I let it all out tonight," he said.

The 22-year-old Frenchman praised the doctors who oversaw his path through the NBA concussion protocol, but voiced dissatisfaction with the process that requires a gradual return to physical activity under medical supervision.

"The way the situation was handled was very disappointing," Wembanyama said, declining to elaborate.

San Antonio's De'Aaron Fox led all scorers with 28 points, and the Spurs out-scored the Trail Blazers 73-35 in the second half.

They'll try to clinch the series when they host game five Tuesday.

The Celtics spoiled the return of 76ers star Joel Embiid, who played his first game since having an emergency appendectomy on April 9.

Payton Pritchard scored 32 points off the bench and Jayson Tatum scored 30 points with seven rebounds and 11 assists for the Celtics, who led by 16 points after one quarter and by double digits the rest of the way.

Embiid led the 76ers with 26 points and 10 rebounds, but Philadelphia couldn't counter the Celtics' rain of 24 3-pointers.

In Toronto, Scottie Barnes and Brandon Ingram scored 23 points apiece as the Raptors held off the Cavaliers despite making just four of 30 from 3-point range.

The Raptors trailed by five with 2:10 left to play, but powered to the lead with a 9-0 scoring burst and held on.

Donovan Mitchell scored 20 points to lead the Cavs and James Harden added 19, but Mitchell missed two attempts in the final 30 seconds as Barnes made six free throws down the stretch to seal it.