Cleveland Cavaliers forward LeBron James (23) drives on Detroit Pistons forward Marcus Morris (13) during the first half in Game 4 of a first-round NBA basketball playoff series, Sunday, April 24, 2016 in Auburn Hills, Mich. (AP Photo/Carlos Osorio)
Cleveland Cavaliers forward LeBron James (23) drives on Detroit Pistons forward Marcus Morris (13) during the first half in Game 4 of a first-round NBA basketball playoff series, Sunday, April 24, 2016 in Auburn Hills, Mich. (AP Photo/Carlos Osorio)

Houston — Klay Thompson scored 23 points and the Golden State Warriors set an NBA playoff record with 21 3-pointers to overcome another injury to Stephen Curry and beat the Houston Rockets 121-94 on Sunday for a 3-1 series lead.

Curry returned after missing two games with a sprained right ankle, but did not play in the second half after spraining his right knee.

He slid awkwardly to the court while defending on the last play before halftime and immediately grabbed his knee. He got up and looked to have trouble putting weight on it before jogging with a limp to the locker room. He came out with the team after halftime, but sat on the bench for most of the warmup time. After talking with coaches, he returned to the locker room.

Golden State was just fine without him thanks to 3-point shooting that led to a 41-point third quarter.

Spurs 116, Grizzlies 95

Memphis, Tenn. — Kawhi Leonard scored 21 points and San Antonio routed Memphis to sweep the best-of-seven series and advance to the Western Conference semifinals.

The Spurs finished off their ninth sweep of a postseason series in franchise history, their third against the Grizzlies. San Antonio also swept Memphis in the 2004 first round and the 2013 Western Conference finals.

The only thing that delayed the Spurs advancing was a power surge that knocked out the lights, stopping the game for about 20 minutes in the second quarter.

Cavaliers 100, Pistons 98

Auburn Hills, Mich. — Kyrie Irving scored 20 of his 31 points in the second half, and Cleveland finished off a four-game sweep of Detroit.

LeBron James had 22 points for Cleveland, but it was Irving who made the biggest shots all night. His midcourt buzzer beater put the Cavs up 81-78 after the third quarter, and with Cleveland clinging to a one-point lead in the final minute, he calmly sank a 3-pointer from the right wing with 42 seconds remaining.

Detroit still had a chance at the end, but Reggie Jackson’s wild shot at the buzzer was off the mark.