Guard Johnny Dawkins scored 28 points and guard Alvin Robertson scored 20, including 10 in the fourth quarter, as the Spurs held off the Seattle SuperSonics, 123-118, last night in San Antonio.

The Spurs led, 95-85, going into the final period and the SuperSonics got within 122-118 in the final 30 seconds.

Leon Wood, who was waived by the New York Nets earlier this year and signed by San Antonio yesterday, was fouled and hit one free throw to put the game away in the final 30 seconds.

Walter Berry led San Antonio with 23 points.

Xavier McDaniel scored 23 points for Seattle, forward Tom Chambers had 21 and guard Dale Ellis 19, including two three-pointers early in the game.

The score was tied 12 times in the first quarter, before the Spurs began inching away in the second quarter.

"{Dawkins} is really pushing the ball up the court for us," Robertson said. "He's playing with more authority. He knows that he belongs in this league and he knows what he can do."

Nuggets 126, Trail Blazers 113:

In Denver, Alex English scored 14 of his 24 points in a critical third period to lead the Nuggets past Portland. The Trail Blazers have not defeated the Nuggets at McNichols Arena since Dec. 16, 1983.

Denver was locked in a 59-59 tie at the half, but took command of the game in the third quarter.

The Nuggets outscored the visitors, 20-8, to begin the second half for a 79-67 lead, despite the loss of Coach Doug Moe, who missed the final two quarters with the flu as assistant Allan Bristow took over the coaching duties.

Rockets 116, Kings 114:

In Sacramento, Calif., World B. Free scored 19 of his 37 points in the fourth quarter and reserve forward Richard Anderson made two foul shots with 10 seconds remaining to lift Houston.

Anderson's free throws put Houston ahead 115-114. Sacramento's Reggie Theus then missed a 15-foot jump shot with three seconds remaining and Houston's Andre Turner got the rebound, was fouled and made a free throw with one second left.

Ralph Sampson had 31 points for Houston. Theus led the Kings with 34 points and Otis Thorpe added 29.

Lakers 111, Clippers 82:

In Inglewood, Calif., James Worthy scored 20 points and A.C. Green added 17 as Los Angeles remained the only unbeaten team in the Western Conference.

The defending NBA champions need a victory Saturday night at Golden State to equal the best start in the team's history. They began the 1980-81 season with a 5-0 mark, but did not win the title.

The Lakers required only a period and a half to build a 19-point advantage en route to their 18th consecutive Forum win over the Clippers, who lost rookie forward Joe Wolf to a sprained ankle early in the second quarter. Coach Gene Shue's overmatched squad had to struggle just to maintain their deficit by halftime, hitting only 15 of 44 shots in the first two quarters and scoring only 36 points.