When the San Antonio Spurs tightened up their defense against the Milwaukee Bucks in the second half, David Robinson became an offensive threat.

Robinson scored 28 of his 35 points in the second half, rallying the San Antonio Spurs to a 105-101 victory over the Milwaukee Bucks on Thursday night."They got it going with their defense," the Bucks' Fred Roberts said. "When they start moving like that, David is so active, he's going to get loose."

The Bucks led 98-94 with 1:36 left, but Robinson made a three-point play and Willie Anderson followed with a basket with 48.5 seconds remaining to give the Spurs their first lead of the game at 99-98.

"I look up at the score with 1:36 and they're on the line ready to go up four, and we win the game," Spurs coach Larry Brown said. "Tonight was a sign from God."

Steve Henson hit a 3-pointer with 11.3 seconds left to close the Bucks to 103-101, but Robinson and Terry Cummings made a free throw apiece in the final 9.8 seconds to help the Spurs hold off the Bucks.

"Early in the game, I had a little trouble getting started," said Robinson, who had a game-high 13 rebounds. "I settled for the jump shot too much. In the second half, I took it to the basket more."

Anderson finished with 22 points and Sean Elliott had 18 for the Spurs, who increased their lead in the Western Conference to one game over idle Utah and Houston. Cummings added 14 points.

Jay Humphries paced the Bucks with 20 points. Alvin Robertson, Frank Brickowski and Fred Roberts had 14 apiece.

Brickowski, who led the Bucks with 10 rebounds, fouled out late in the game, which hurt the Bucks' inside play, according to Coach Del Harris.

"We got in foul trouble to Brick and to Danny (Schayes). It was a factor in the game," Harris said.

The Spurs started the fourth quarter with a 12-0 outburst and tied the game at 84-84 on a basket by Anderson with 8:04 remaining.

"In the fourth quarter, the momentum changed," Robertson. "We were not able to get it back,"

Robinson scored nine of his 14 third-quarter points in an 18-11 spurt to close the Spurs to 69-64 with 4:22 left in the period.

But Robertson scored the last six points of the quarter for the Bucks, including a 3-pointer with 1.2 seconds left, to increase Milwaukee's lead to 84-72.

The Bucks outscored the Spurs 20-6 through the first 5:45 of the second quarter to take a 47-31 lead.

Brickowski dumped in four of his seven second-quarter points as six different players scored for the Bucks during the surge.

Elliott hit for six of his 12 first-half points in the second quarter, including a basket that closed the Spurs to 56-46 with 32.8 seconds left in the half. But Jeff Grayer made a running one-handed jumper at the buzzer to put the Bucks ahead 58-46.

The Spurs have won five of their last 11 road games.

"This is a very good win for us since we are on a very important road trip," Robinson said. "If we do well on this trip, it will put us in the driver's seat for the playoffs."

The Spurs have two games remaining on their three-game road trip, Friday at Chicago and Sunday at Minnesota.