DENVER - Robert Horry keeps adding to his resume and the Denver Nuggets’ playoff losses.

“Big Shot Bob” hit a 3-pointer from the right corner with 30 seconds left to seal San Antonio’s 96-89 victory over the Nuggets on Monday night that gave the Spurs a 3-1 lead in the first-round series.

The Spurs can close out the best-of-seven series at home on Wednesday night.

The 36-year-old Horry more than lived up to his reputation for coming through under playoff pressure on this trip to the Rockies — his swipe of an inbounds pass and subsequent 3-pointer sparked the Spurs’ win in Game 3.

“He’s been known to do that,” deadpanned Spurs coach Gregg Popovich. “I’m glad he’s on our team. He’s saved us several times.”

After blowing a 10-point second-half lead, the Nuggets had pulled to 90-89 on Steve Blake’s jumper which looked like a 3 but his toe was on the line. Following a timeout, Tony Parker took the inbounds pass, penetrated the lane and kicked out to Horry all alone in the right corner.

Marcus Camby rushed to put up a hand but Horry’s rainbow shot swished to give the Spurs a 93-89 lead.

“It wasn’t easy,” Horry said. “I saw Camby coming at me hard as heck and I had to get the ball way over him.”

Horry didn’t know it was good until it snapped the net.

“It felt good. Camby gave it a hell of a test so I had to shoot it high. I thought it was going to be short, but luckily it went in,” he said.

Tim Duncan said he knew the shot was true. Then again, he had a unique view.

“Someone was boxing me out and I was under the rim,” Duncan said. “I looked up through the rim and see the ball coming straight through.”

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Where does this one rank in Horry’s list of postseason money shots?

“It doesn’t even make the top five or top ten,” Horry said. “There was too much time on the clock.”

Not enough for the Nuggets.

“When they needed a big shot, he delivered,” Allen Iverson said, “and that one hurt us.”

It was just the second basket of the night for Horry.

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Duncan led the Spurs with 22 points, although he was frustrated at only getting to the free throw line six times, while Manu Ginobili added 18 and Parker 15.

Carmelo Anthony led the Nuggets with 29 points and Iverson had 22, although he had another poor shooting performance — 9-for-25.

“I just didn’t play well,” said Iverson, who is 25-of-70 in the last three games. “I wasn’t in my game. I had so many good looks and so many easy baskets that I missed, it just was frustrating tonight and it’s something I have to work through. If I knew how to adjust to it, I would.”

Horry’s shot sealed the win but it was Bruce Bowen’s big play that started the Spurs’ surge.

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With the game tied at 85, Bowen stole Blake’s outlet pass at the top of the circle and raced downcourt for the jam that gave San Antonio the lead for good with 2:58 remaining.

“I saw that Blake was trying to pass the ball down low and he saw me sliding down. So he tried to skip the ball and I just happened to be there,” said Bowen, who was the leading vote-getter in the NBA’s All-Defensive team announced earlier Monday.

Trying to make up for his mistake, Blake misfired a 3-pointer and Duncan hit one of two free throws to give the Spurs a three-point lead.