Danilo Gallinari scored 13 of his 25 points in the opening quarter, and Montrezl Harrell added 20 points as the Clippers won their fifth consecutive game and improved to 9-3 since their roster was restructured at the trade deadline.
Williams, who leads the NBA in points off the bench this season, passed Dell Curry as the highest scoring player off the bench of all time and now has 11,154 as a reserve in his career. Curry had 11,148 points as a reserve. It was Williams' eighth game of the season with at least 30 points, all since Dec. 28.
Terry Rozier scored 26 points for the Celtics, who saw their three-game winning streak end. Boston went 3-1 on a four-game road trip, all against California teams. Jaylen Brown scored 22 points, and Kyrie Irving added 18 and 11 assists for the Celtics.
Rockets 118, Hornets 106
Clint Capela dominated the paint as Houston stretched its winning streak to nine games with a victory over visiting Charlotte.
Capela paired 19 points on 8-of-12 shooting with 15 rebounds and controlled the interior as the Rockets produced a 55-39 rebounding advantage. James Harden led the Rockets with 28 points and 10 assists. Eric Gordon chipped in 22 points, and Chris Paul contributed 10 points and 10 rebounds.
Hornets star Kemba Walker finished with a game-high 40 points on 14-of-20 shooting. He shot a combined 11 of 11 in the second and third periods, pouring in 31 points during that stretch.
Thunder 98, Jazz 89
Dennis Schroder scored 24 points, and Russell Westbrook had 23 points and 11 rebounds as Oklahoma City beat Utah in Salt Lake City.
The win was just the third in nine games for the Thunder, who beat the Jazz for the fourth time this season to sweep the season series. Paul George struggled offensively yet again for Oklahoma City, though he finished with 14 points and 11 rebounds.
Utah, which got a game-high 25 points from Donovan Mitchell, lost for the third time in the past four games.
Cavaliers 126, Raptors 101
Collin Sexton scored 28 points as Cleveland cruised past visiting Toronto.
Kevin Love, with 16 points and 18 rebounds, recorded his ninth double-double in 14 games for the Cavaliers this season. Love also was a force on the defensive end, drawing four offensive fouls. Cleveland's Cedi Osman added 19 points.
Kawhi Leonard led the Raptors with 25 points and nine rebounds. Toronto's Serge Ibaka and Cleveland's Marquese Chriss were ejected following a fight near the end of the third quarter.
Nets 103, Pistons 75
Spencer Dinwiddie scored 19 points as Brooklyn seized control late in the first half and claimed a lopsided win over Detroit in New York.
In the final game before a season-long seven-game road trip that starts Wednesday in Oklahoma City, the Nets won their fourth straight. Allen Crabbe added 14 points for Brooklyn.
Andre Drummond collected 13 points and 20 rebounds for Detroit, which had its five-game winning streak stopped. Blake Griffin finished with 10 points on 1-of-10 shooting.
Wizards 121, Kings 115
Bradley Beal scored 27 points, Bobby Portis added 17 points and 13 rebounds, and Washington defeated visiting Sacramento.
Jabari Parker scored 18 points and Tomas Satoransky had 17 as the Wizards started a crucial five-game homestand by ending a two-game losing skid. Beal added nine rebounds, nine assists and four steals.
De'Aaron Fox led seven Kings in double figures with 23 points. Nemanja Bjelica had 15 points and 12 rebounds for Sacramento.
--Field Level Media