INGLEWOOD, Calif. (AP) _ James Worthy scored 28 points Tuesday night and the Los Angeles Lakers scored an NBA playoff-record 49 points in the third quarter in a 125-116 victory over the Golden State Warriors in Game 1 of the Western Conference semifinals.

The second game of the best-of-seven series is scheduled for Thursday night at the Forum.

After erasing a seven-point halftime deficit, the Lakers broke the game open by scoring 29 points over the final 6:06 of the third period.

Leading 80-77, the Lakers scored seven consecutive points and followed that with a 17-6 run to lead 104-85 by quarter's end.

The 49 points was the most ever scored in the third quarter of an NBA playoff game, breaking the previous mark of 47 set by Milwaukee in 1970 and matched by the Lakers in 1984.

In the quarter, Worthy scored 18 points, with Michael Cooper adding 13, including three three-point baskets. Magic Johnson added 11 points in the quarter.

Johnson finished with 25 points, 14 assists and 12 rebounds for the Lakers. Cooper and Byron Scott each added 17.

Joe Barry Carroll, who had 20 points at halftime, finished with 22 to lead the Warriors. Eric ''Sleepy'' Floyd added 19 and Terry Teagle 18 for Golden State.

The Warriors scored eight consecutive points midway through the second quarter, opening a 50-43 lead on a pair of free throws by Carroll with 3:16 remaining in the half. Golden State held its biggest lead of the half, 62-53, on a three-point play by Larry Smith.