NBA

Knicks lose to Heat in playoff opener

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MIAMI — A flu-ridden Tyson Chandler was in a back room getting a two-hour IV session. Iman Shumpert was in a Miami hospital getting an MRI exam on his knee — his series over, next season’s training camp over, too. Carmelo Anthony spoke in a low, depressing whisper, sending out prayers to Shumpert. Baron Davis talked about his back tightening up again.

So was the aftermath of yesterday’s matinee humiliation. Everything that could have gone wrong went wrong for the Knicks in Game 1 during a disastrous afternoon at AmericanAirlines Arena that compromised their present and future.

It feels like the first-round series is already done after 48 minutes as the Heat massacred the Knicks, 100-67, and their prized rookie defensive stopper Shumpert will be out six to eight months after tearing his ACL and lateral meniscus.

Shumpert is expected to miss training camp, may not be back until January and who knows what kind of explosiveness he will have.

“It’s a bad feeling,’’ Anthony said in low tones. “But we’re not going to get down on ourselves.’’

Even the South Beach weather stinks — rainy, cloudy all day. The Knicks posted their lowest playoff total in the shot-clock era and confirmed they will show up for Game 2 tomorrow in Miami, with the only bright note being owner James Dolan making it out of the arena safely.

“We got hit in the mouth, so we need to see what we are made of now,” Knicks coach Mike Woodson said. “They played well, we played awful from the six-minute mark on [of the second quarter] when all hell broke loose.”

If it wasn’t hell, it was close to it. Chandler, the Knicks’ heart and soul, played with the flu and was horrible, detrimental and nearly got ejected. He was scoreless with seven turnovers in 21 minutes.

Shumpert crumpled to the court midway through the third quarter, got carried off by teammates and was taken to the hospital. A source said Shumpert heard a “pop’’ on the way down after making a routine move on Mario Chalmers and landing badly. All the Knicks players bounded onto the court, including Woodson and Shumpert was carried off the court by fellow rookies Josh Harrellson and Jerome Jordan.

“We know Shump’s not going to be with us,’’ Anthony said. “My prayers go out to him.’’

Anthony couldn’t connect on any of his prayers yesterday. He missed his first seven shots, finishing with 11 points on 3-of-15 shooting and the Knicks were unable to free him from the suffocating Miami defense. LeBron James, meanwhile, lit up Anthony with 32 points in 32 minutes.

“I’ve got to do a lot more things,’’ Anthony said. “My shot wasn’t falling. I turned the ball over. One of them days I didn’t play well. I have to make the adjustment, seeing where everything went wrong. The fun starts now.’’

Or the misery.

“The game got out of hand a little bit,’’ said Amar’e Stoudemire, who finished with nine points (2-of-7 from the field).

James finished 10-of 14 shooting, made 11-of-14 free throws, had four steals and scored nine points during a dizzying second-quarter rampage after the Knicks — particularly Chandler — got rough with him.

“He’s on a mission,’’ Woodson said.

Chandler was a game-time decision and suited up despite looking haggard and played with no energy or rhythm.

“He wasn’t himself out there,’’ Stoudemire said. “I can tell. Tyson is very, very vocal. Tonight he didn’t have it. There was a couple of easy baskets he couldn’t finish. He felt a little dizzy out there the whole game.’’

Chandler wasn’t in the locker room after the game, getting IV work. “Obviously I don’t feel myself,’’ said Chandler to a pool reporter. “Not being able to do what I’m normally able to do. I didn’t think I was going to be able to play [Friday], even late last night. I thought I’d be able to give my team a little something, help team morale. I was just feeling weak out there. I was kind of blank, always dizzy and foggy.’’

Chandler committed four offensive fouls, two off-the-ball infractions against James, including one that nearly got him ejected and either had James shaken up or acting like he was shaken up.

Chandler set a moving screen at midcourt on James but instead wound up knocking him from behind, sending James either flopping or flying to the court. James grabbed his neck for several moments, walking around in exaggerated pain. The ruling was a flagrant-2 and ejection but after a video review, it was reduced to a flagrant-1.

“I thought it was a legal pick,’’ Chandler said.

Woodson has a difficult coaching job to do now, while hoping point guard Jeremy Lin can still make it back if they extend the first round past four games.

“They’ve been pretty good at home here,” Woodson said, trying to find a silver lining with Game 2 lurking. “But I I feel good about going back to New York.’’

Woodson already can’t wait to get home.

marc.berman@nypost.com