NEW YORK, March 3 (Ticker) -- Tim Duncan and David Robinson were the latest to find out how little energy is left at Madison Square Garden.

Duncan scored 25 points and grabbed 12 rebounds and Robinson contributed 13 and 15 as the San Antonio Spurs rolled to a 99-83 victory over the New York Knicks.

The Spurs never trailed, built an 11-point halftime advantage and opened a 21-point bulge in the third quarter.

"I heard a lot more voices than usual saying, 'Go Spurs,'" said Robinson. "It was a little different out there. But they have great fans. The team is just going through a tough time.

NBA TV highlights from Spurs-Knicks: 56k | 300k Tim Duncan posed a tall task for Kurt Thomas and the Knicks. Nathaniel S. Butler NBAE/Getty Images

"I think their defense is not on the same level. They were known for being physical and fighting you till the end. This team doesn't seem to have that same resilience. But a guy like Marcus (Knicks center Marcus Camby) adds a lot when he's healthy. He's a high energy guy and they need that."

With the 6-11 Camby likely sidelined for the rest of the season with a torn hip muscle, the Knicks had little chance against San Antonio's 7-foot duo of Duncan and Robinson and were outrebounded, 46-36.

"I think it is tough on the Knicks when they are undermanned," Spurs coach Gregg Popovich said. "Camby is a big part of what they do, especially when you have to deal with two big guys like we have."

Kurt Thomas was one of the few Knicks who battled inside, recording 19 points and 11 rebounds.

But Allan Houston and Latrell Sprewell struggled from the perimeter, combining for just 25 points on 11-of-28 shooting.

San Antonio's Steve Smith won his matchup against Houston, scoring 18 points, while Bruce Bowen held Sprewell to 12.

"Bruce is somebody we are really thrilled to have because obviously he makes us a solid defensive team," Popovich said. "We were doing pretty well without him but with him back it kind of steps up the ante for everybody else to play better defense."

But Sprewell, who had just four points at the half and finished 5-of-13 from the field, opted to credit Duncan and Robinson instead of Bowen.

"When you drive and penetrate against a defense that has size, you have to find other guys," Sprewell said. "The big guys did a good job just clogging up the lanes and just being there on any kind of penetration."

The loss was the seventh in eight games for New York, which owns the fourth worst record in the Eastern Conference at 21-36.

Duncan scored 16 points in the first half and Robinson added 10 and 10 rebounds in the first half, when the Spurs took a 48-37 lead.

"You have to be careful with Duncan in terms of doubling too early because Steve Smith and those guys on the perimeter are great 3-point shooters," Knicks coach Don Chaney said.

The Spurs opened their biggest lead at 72-51 when rookie Tony Parker hit a 17-foot jumper with 3:40 left in the third quarter.

After the Knicks pulled within 85-72 on a 3-pointer by Sprewell with 9:02 left, the Spurs responded with a 12-4 run which featured two baskets by Malik Rose, who finished with 13 points off the bench, and a three-point play by Duncan.

"We really played well today," said Duncan, who has a league-leading 48 double-doubles. "We moved the ball around on offense, played an inside-outside game and that's where we're at our best."

Duncan and Smith combined for 12 points in a 17-8 second-quarter run which increased San Antonio's lead to 47-33 with 1:29 left in the half.