Larry Bird scored 24 points and Danny Ainge 21 last night to guide the unbeaten Boston Celtics to a 103-98 triumph over the Indiana Pacers in Indianapolis.

Boston (6-0), sparked by three-point shots from Bird and Ainge, outscored Indiana 10-2 during a three-minute span that gave the Celtics a 101-92 lead. The Pacers had rallied from a 14-point deficit to pull within 91-90 with 6:47 to play on a driving layup by rookie Reggie Miller.

Robert Parish and Dennis Johnson each scored 16 points for Boston. Miller had 23 points for Indiana (3-3), followed by 17 points each by Vern Fleming and Chuck Person.

Indiana trailed, 61-53, at halftime, but Miller hit a pair of three-point shots during a 17-8 run over a six-minute span in the third period to cut the Boston lead to 83-79.

Lakers 147, Spurs 130:

Magic Johnson scored 25 points and became the team's all-time assists leader as the defending NBA champions got off to their best start ever by winning at home.

The Lakers (6-0) and the Boston Celtics are the league's only undefeated teams.

Johnson, in his ninth NBA season, had 10 assists to run his career total to 6,245. That bettered the former club record of 6,238 set by Jerry West during his 14 years with the Lakers.

Bucks 112, Hawks 103:

Terry Cummings scored 28 points, Jack Sikma had 23 and Milwaukee held Atlanta star Dominique Wilkins to seven points in winning at the Mecca.

Wilkins, averaging 27 points entering the game, had five points in the first quarter and only two in the second half.

Milwaukee broke an 83-83 tie in the fourth quarter with a 10-3 spurt featuring two baskets each by Paul Pressey and Cummings.

Rockets 108, SuperSonics 106:

Rodney McCray sank a 20-foot jump shot at the buzzer to give Houston a win at the Summit.

With the score tied, 106-106, Houston called timeout with four seconds remaining. McCray took the inbound pass, dribbled toward the basket and took his game-winning shot.

Houston (5-1) had trailed, 106-102, with 1:39 left, but a pair of free throws by McCray and a basket by Akeem Olajuwon tied the score 106-106 with 54 seconds left.

Olajuwon and McCray led the Rockets with 24 points each.