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Tony Avelar, Associated Press
Golden State Warriors guard Stephen Curry (30) dribbles against Houston Rockets center Dwight Howard (12) during the first half of Game 2 of the NBA basketball Western Conference finals in Oakland, Calif., Thursday, May 21, 2015.

OAKLAND, Calif. — James Harden had Game 2 on his fingertips — and then he didn't.

Now the Golden State Warriors have the Western Conference finals in their grasp.

Stephen Curry scored 33 points before Harden lost the ball in the closing seconds, and the Warriors held off the Houston Rockets 99-98 on Thursday night to take a 2-0 lead in the series.

Harden rallied the Rockets from 17 points down in the second quarter and had a chance to finish off the comeback in the fourth. Instead, Klay Thompson harassed him and Curry came over to trap Harden, who lost the ball as time expired.

"It's great competition," Warriors coach Steve Kerr said. "It's two teams that really want to get to the finals."

Harden fell to the floor and put his hands over his head as the Warriors celebrated on the court, the sellout crowd roared and golden-yellow confetti fell from the rafters.

Harden had 38 points, 10 rebounds and nine assists, and Dwight Howard overcame a sprained left knee that slowed him down to finish with 19 points and 17 rebounds for a Rockets team headed home in a major hole.

Game 3 is Saturday in Houston.

Curry, the NBA MVP, made five 3-pointers to go with six assists and three rebounds. He got a big boost from his teammates — notably Andrew Bogut, Draymond Green and Thompson — to regroup after the Warriors lost the big lead in the first half.

But the Warriors pulled ahead again late in the fourth quarter because of Curry — with his shot and his passes.

Curry connected on a 3-pointer, then found Bogut under the rim for a layup that sent the 7-footer flexing his muscles and shouting to the roaring, yellow-shirt wearing crowd. Bogut missed the ensuing free throw, but the Warriors led 96-89 with 2:25 left.

Harden, the MVP runner-up, kept finding ways to draw fouls and brought Houston back on free throws. The Rockets also forced the Warriors into an 8-second, backcourt violation before Harden found Howard for an alley-oop that sliced Golden State's lead to 99-98 with 33 seconds remaining.

Harrison Barnes missed a difficult reverse layup contested by Howard as the shot clock nearly expired. Harden got the ball down the court, and Rockets coach Kevin McHale elected not to call timeout because his team had the Warriors scrambling and outmanned.

Harden was trapped by Thompson, and Curry came over as Harden lost the ball. Time expired amid the scramble.

"I will take our best player heading downhill on a broken court any day of the week. That's where he feasts," McHale said.

The Warriors bench ran onto the court in celebration. Harden lay on the floor until teammates helped him up.

That ended a back-and-forth contest — one that saw the Rockets rally the same way the Warriors did in Game 1, when they came back from a 16-point deficit in the second quarter.

Howard wore a black brace over his sprained left knee. He lacked the usual lift in his legs — unable to contest many of those rim-rattling dunks — but still produced on both ends.

But the Rockets turned to Harden when they needed a boost. He helped Houston regroup with a 23-6 run in the second quarter as they took advantage of Golden State's sloppy turnovers (17 in all), tying the score at 55-all at the half.

Thompson, Barnes and Leandro Barbosa took turns guarding Harden in the second half with mixed results. The Rockets led by six early in the third quarter, quieting the crowd, then fell behind 83-77 with Harden on the bench early in the fourth.

"We're not going to go anywhere," McHale said. "We're just going to keep standing here and swinging."

TIP-INS

Rockets: Houston is 0-6 against the Warriors this season. ... The Rockets haven't won at Golden State since Dec. 13, 2013.

Warriors: Golden State is 45-3 at home this season, including 6-1 in the playoffs. ... The Warriors are 54-0 when leading by at least 15 points at any point in a game this season.

AMONG THE CROWD

Former San Francisco Giants slugger and home run king Barry Bonds shook hands with several Warriors players before the game. ... Montell Jordan sang a stirring rendition of the national anthem and performed his 1995 hit song "This Is How We Do It" at halftime. ... Oakland native and rapper MC Hammer and actor Blake Anderson, the star of the TV series "Workaholics," also were among the crowd.