Center Darryl Dawkins shattered his second backboard of the season tonight, stopping an NBA game at the Spectrum.

The Philadelphia 76ers led the San Antonio Spurs, 110-99, after Dawkins' dunk shot with 6:43 left to play.

The 76ers came back after the delay to win, 32-120.

The 6-foot-11 center knocked the hoop cleanly off the backstop with his shot. That put a hole in the glass backboard and the glass began to shower onto the court.

Dawkins, who was alone under the basket, ducked under the falling glass. It could not be immediately learned if he was struck by any fragments.

Both teams went to their dressing rooms while workmen lowered the backstop and moved to replace the glass.

Dawkins, who weighs 252 pounds, last broke a backboard Nov. 13, early in the second half against the Kings in Kansas City.

In other games:

John Drew scored 22 points, all in the second half and Eddie Johnson added 21 as the Atlanta Hawks trounced the Boston Celtics, 120-92. The defeat was the first loss at home this season for the Celtics.

In Houston, Los Angeles Laker Spencer Haywood stole the ball from Houston's Rick Barry and passed to Norm Nixon for a layup with 25 seconds to play to rally the Lakers to a 116-114 victory over the Rockets.

Mickey Johnson scored 24 points to lead the Indiana Pacers to a 118-99 victory over the Cleveland Cavaliers.

Otis Birdsong scored 12 of his 17 points in the third quarter to propel the Kansas City Kings to a 109-93 win over Detroit for the Pistons' 11th straight loss on the road.

Mike Newlin (29) and rookie Calvin Natt (27) combined for 56 points, 40 in the second half, to pace the New Jersey Nets to a 115-100 victory over the Phoenix Suns.

Dan Issel and George Johnson dominated play inside as the Denver Nuggets atoned for two early season losses and whipped Milwaukee 123-107.

In West coast games, Seattle downed Utah, 115-96, and Golden State defeated Chicago, 97-90. With center Jack Simka and his replacement, Tom LaGarde, shutting off Utah's inside game, the Soncis grabbed an early 11 point lead. Sonny Parker led the Warrior victory with 23 points.