SAN ANTONIO — Manu Ginobili struggled for two games and it seemed he might not have anything left. A sore ankle, a ripped fingernail and plenty of missed shots. All the while, he insisted he would step up for the San Antonio Spurs.

He kept his promise yesterday. And nobody on either team was surprised.

"He is such a competitor," Spurs coach Gregg Popovich said after Ginobili scored 30 points to lead the Spurs to a 103-84 victory over the Los Angeles Lakers in Game 3 of the Western Conference finals. "He puts so much on his shoulders, he fights through a lot of things. ... He's got a lot of confidence in what he can do.

"And so when he has these games, it is really not a surprise anymore."

Ginobili hit five of the Spurs' 10 3-pointers and got to the rim a few times to keep the defending champions from falling into an 0-3 hole, which no NBA team has ever overcome.

"I was too stagnant in the first two games," said Ginobili, the league's top sixth man who came off the bench yesterday. "I didn't feel like I was being me. ... I made the first shots. I felt good. And then it was easier for me."

The Lakers lead the series 2-1. Game 4 is tomorrow in San Antonio.

Tim Duncan had 22 points, 21 rebounds and five assists, and Tony Parker added 20 points and five assists for the Spurs, who remained unbeaten at home this postseason.

Kobe Bryant led the Lakers with 30 points and Pau Gasol scored 15.

"It's a good experience for us to play against the defending champs and have them kick our butts the way they did," Bryant said. "I think we grew up a lot tonight."

Lamar Odom struggled all night, finishing 2 of 11 from the field for seven points. But he had six of the Lakers' 13 assists and 11 rebounds.

"On me personally it definitely snowballed," Odom said. "That happens, but sometimes I'd rather go out swinging than being passive. It was just one of those nights."

The Lakers also struggled at the free throw line, going just 8 of 17. Bryant went to the line only once.

Yesterday, the Spurs got a lead midway through the second quarter and never looked back, despite a late surge from Bryant.

The Spurs had squandered a 20-point lead to lose Game 1 in Los Angeles and the Lakers routed them in Game 2.

"They were energized and they played with a lot more emotion, a lot more energy than we did," Lakers coach Phil Jackson said. "They were quicker to the ball. And it was quite obvious at times."

Up 69-57 entering the fourth, the Spurs opened with a 12-4 run, and Parker's layup gave them a 20-point lead with a little over 8 minutes to play.

Then Bryant did what Bryant does: almost single-handedly pulled his team out of the hole. He hit four 3-pointers over the course of less than 2 1/2 minutes and his last one brought the Lakers within 88-76 with 5 minutes to play.

But the Lakers would get no closer, not when the Spurs' title defense would be all but ruined with a Game 3 loss.

Duncan answered with a three-point play to put the Spurs back up by 15 and not long after Brent Barry's steal that resulted in a three-point play for Ginobili made it 97-78 with 3:26 to go.

Reserve Jordan Farmar scored 10 points for the Lakers.

In the first half, Parker was penetrating the paint, but Ginobili was the big key for the Spurs.

He had 22 points at the break — more than the 17 he scored in Games 1 and 2 combined. And whether or not his injured left ankle was bothering him, he didn't need it to explode to the basket because he hit 3 after 3.

"I don't feel like my last step is as strong as probably a couple months ago, but it's not a big issue," Ginobili said. "I mean, I think I can still finish."