FELT SO GOOD: Raymond Felton, who led the Knicks with a game-high 25 points, elevates for a jump shot over the Spurs’ Kawhi Leonard. (NBAE/Getty Images)
JOY OF SIX: Jason Kidd, who hit three 3-pointers during the fourth-quarter comeback, slices between Manu Ginobili (left) and Tim Duncan during the Knicks’ 104-100 win over the Spurs in San Antonio last night to improve to 6-0. (AP)
SAN ANTONIO — Mike Woodson knows nobody can scoff at the Knicks’ unbeaten start now, not after last night’s comeback from 12 points down in the final seven minutes to stun the powerhouse Spurs, 104-100, at AT&T Center.
“It shows me that this team is for real,’’ said Woodson, who had never won in San Antonio as a head coach. “We beat a great team tonight.’’
It was the Knicks’ first victory in San Antonio since 2003 as they moved to 6-0 for just the second time in team history and showed they have all the qualities of a championship contender. Spurs coach Gregg Popovich, who has four titles, got the message.
“There’s a reason why they were 5-0,’’ Popovich said. “They lead the league in steals, lowest points allowed. It’s a helluva team and I think we ran out of gas.’’
Oh, the Knicks had the Spurs (7-2) gasping in the final minutes. Trailing 89-77, Jason Kidd lit up from the 3-point stripe and the defense stiffened as the Knicks staged a wild 25-6 run. Kidd hit three 3-pointers during the surge as the Knicks moved within a win of matching their best start ever (1993-94).
The Knicks didn’t even need Carmelo Anthony to carry them, as he said he was mostly “a decoy’’ against the Spurs double and triple teams and scored nine points on 3-of-12 shooting. But he defended, passed well in traffic with three assists, had 12 boards and got huge praise from his teammates for a gritty effort.
“Today was a true test for us as far as us sticking together as a team, doing it as a unit on both ends,’’ Anthony said. “Today was a great way to show how together we are as a unit. We did it as one. The guys we have definitely know how to win basketball games.’’
Especially Kidd, who finished with 14 points, hitting 4-of-6 3-pointers. Raymond Felton was the high scorer with 25 points and added seven assists, and sixth man J.R. Smith came alive late and finished with 17 off the bench, including the go-ahead 3-pointer with 1:48 left. Tyson Chandler was a monster with 13 points and 11 boards.
“We just kept our composure and kept fighting,’’ Felton said. “We have confidence in ourselves. We could have said, ‘We’re playing Memphis tomorrow, let’s fold it up,’ but we didn’t.’’
“It is a great test and that’s all it is,’’ Kidd said. “We learn from them and hopefully put ourselves in a good position come April.’’
The Knicks, who shot 6-of-23 in a hideous third quarter, looked dead midway through the fourth. The Spurs got a huge spark from active young big man Tiago Splitter, who scored all of his 13 points in the first five minutes of the fourth. But the Knicks didn’t fold as they would have in years past.
After a Splitter layup off a bullet pass from Tony Parker (19 points) put the Spurs up 12 with 7:14 left, the Knicks called time and the huddle became chaotic with Woodson shouting and the players shouting back.
“Jason was one of the guys who kept us composed when they went up 12 points,’’ Anthony said. “He huddled us up and told us they’re going to let us back in. Play some defense, we’re going to score the basketball. Everyone took heed of that.’’
“That’s when we told [Woodson] to calm down,’’ Chandler said. “We said listen, we have chance here. We’re not out of this game. Everyone was getting a little frantic.’’
Kidd lit the fire, hit two straight 3-pointers and the Knicks were back in it at 89-84.
“I sound like a tape recorder, but whether a steal or 3-pointer, he always seems to make a big play,’’ Chandler said.
Smith scored on a nifty turnaround in the lane to make it 95-94 with 2:15 left, then hit a giant 3-pointer from the left wing as the Knicks took the lead for good at 97-95 lead with 1:45 to go.
Tony Parker, 0-for-4 in the fourth quarter, was wearing down. The Spurs committed a 24-second violation thanks to the swarming defense and San Antonio looking afraid to shoot. Kidd buried another 3-pointer from the right wing to put the Knicks up 100-95 with 1:02 left and it was all but over.
A harassed Tim Duncan (14 points, 14 rebounds) missed wildly on a contested banker and Chandler put the finishing touches with a vicious putback dunk with 36.9 seconds left for a 102-95 lead, capping a 9-0 run.
“It shows we can play through adversity,’’ Chandler said.
It showed a lot more than that.
marc.berman@nypost.com