LaMarcus Aldridge had 38 points and the Spurs dismantled the Oklahoma City Thunder, 124-92, on Saturday night in San Antonio, never trailing in Game 1 of the second-round series.

Kawhi Leonard added 25 points, 5 rebounds, and 5 assists in 22 minutes for San Antonio. The Spurs led by as many as 43 points and sat their starters in the fourth quarter to rest them for Game 2 on Monday night.

Aldridge broke out for his finest performance of the season after Memphis held him to a 14.5-point average in the first round, nearly 7 points below his regular-season numbers. Aldridge was 18 for 23 from the field, including his first 3-pointer of the season and banking in a lefthanded scoop shot as he was falling in the lane.

Leonard and Aldridge combined for 45 points in the first half, outscoring Oklahoma City as a team by 4. Unfortunately for the Thunder, the rest of the Spurs were just as impressive early.

San Antonio matched a postseason franchise record for points in a quarter with 43 in the opening period.

Serge Ibaka led Oklahoma City with 19 points, but was limited to two rebounds. Kevin Durant had 16 points, and Russell Westbrook added 14, but they were harassed into 11-for-34 shooting.

The Spurs scored the most postseason points against the Thunder. They had 39 assists, which was more than the Thunder’s field goal total of 35.

San Antonio shot 82 percent in the opening quarter, including 3 for 4 on 3-pointers in taking a 23-point lead. The Spurs also blocked six shots, collapsing and surrounding the Thunder with multiple defenders whenever they drove into the lane.

The only scare came when Leonard grabbed the back of his left leg after landing on it awkwardly off a powerful one-handed dunk on the game’s opening possession. San Antonio coach Gregg Popovich paced the sideline in concern, asking Leonard ‘‘are you OK?’’ on the Spurs’ ensuing possession. Leonard didn’t respond verbally, but his dynamic efforts on both ends of the court answered Popovich’s concerns.

Leonard shot 10 for 13 from the field and had only one turnover while guarding Westbrook and Durant.

Oklahoma City was noticeably frustrated and out of sorts throughout the game.

Westbrook shook his head and cringed when he saw Oklahoma City coach Billy Donovan signal for him to run a play after the Thunder’s electric point guard slowly brought the ball upcourt and looked toward the bench in an apparent desire for a timeout with San Antonio up, 17-6. That play would lead to a breakaway dunk by Leonard, which prompted Donovan to call a timeout.

.   .   .

Damian Lillard scored 28 points and the host Portland Trail Blazers advanced to the Western Conference semifinals by beating the Clippers, 106-103, on Friday night in Los Angeles to claim the first-round playoff series, 4-2.

Portland will open the second round against the reigning NBA champion Warriors on Sunday.

C.J. McCollum added 20 points for the host Blazers, who became the first team to overcome a 2-0 deficit since Memphis against the Clippers in the first round in 2013.

Jamal Crawford had 32 points and Austin Rivers added 21 points and eight assists despite having 11 stitches above his left eye from a collision in the first quarter. But the Clippers could not recover from injuries to Chris Paul and Blake Griffin in Game 4 of the series.