HOUSTON -- Klay Thompson scored 23 points and the Golden State Warriors set an NBA playoff record with 21 three-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.
Golden State was just fine without him thanks to three-point shooting that led to a 41-point third quarter. The Warriors bested the NBA record they shared for threes in a playoff game when Brandon Rush made one from the top of the key with about 2 1/2 minutes left.
Golden State hosts Game 5 on Wednesday.
Dwight Howard led Houston with 19 points and 15 rebounds. James Harden had 18 points, 10 assists and seven steals (see full recap).
Irving's 31 points help Cavs hold on, sweep Pistons
AUBURN HILLS, Mich. - Kyrie Irving scored 20 of his 31 points in the second half, and the Cleveland Cavaliers finished off a four-game sweep of the Detroit Pistons, holding on for a 100-98 victory on Sunday night.
The Cavs advance to the second round to play either Atlanta or Boston.
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 (see full recap).
Spurs complete sweep of Grizzlies
MEMPHIS, Tenn. -- Kawhi Leonard scored 21 points as the San Antonio Spurs routed the Memphis Grizzlies 116-95 on Sunday, sweeping the best-of-seven series and advancing 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.
San Antonio now awaits the winner of Oklahoma City-Dallas, a best-of-seven series that the Thunder lead 3-1 (see full recap).
LaMarcus Aldridge scored 15 points and grabbed 10 rebounds for the Spurs. Tony Parker added 16 points. David West had 11.
Lance Stephenson scored 26 points off the bench for the Grizzlies. Zach Randolph and Matt Barnes each had 15 points, and Vince Carter 14.
Celtics notch OT win in Game 4 to knot series with Hawks
BOSTON -- Isaiah Thomas scored 28 points, hitting a corner three with 30 seconds left in overtime and then adding a pair of clinching free throws as Boston sent its first-round playoff series back to Atlanta tied two games apiece.
Paul Millsap scored 45 for the Hawks - a career playoff high and one off his all-time best - and added 13 rebounds.
Marcus Smart scored 20 points - including 11 straight for Boston in the fourth quarter - and Jonas Jerebko had 16 points and 10 rebounds.
Game 5 is Tuesday night in Atlanta (see full recap).