The Celtics have now played two games without the Kevin Garnett they know and depend on.

From the overall offensive malaise of Game 1 to Garnett’s foul trouble in last night’s 87-71 Game 2 loss to the Knicks, the Celtics headed home suffering from KG deprivation and in an 0-2 hole in the Eastern Conference quarterfinals.

Garnett picked up three quick first-half fouls — two of the light-touch variety — and finished with five in 24 minutes — numbers far more influential than his 12-point, 11-rebound double-double.

Garnett was restrained on the foul question.

“At times it’s frustrating, though fouls are a part of the game,” he said. “Refs are calling things aggressively in postseason play, and you have to be consistent. I have to continue to put the onus on the refs, and not foul so much.”

Doc Rivers came much more to the point when he said, “I thought the fouls on Kevin were horrendous. Him not being on the floor — playing 24 minutes and never getting your rhythm, where you could see it looked like he was going to have a big game — it hurt us. And that’s just the way it goes. There’s nothing I can do about it now. But I thought that if it could have gone either way on those, they all went at Kevin. I think that’s tough.” . . .

Last night’s main rotational victim was Courtney Lee, who was on the floor for four minutes in the second half after never leaving the bench in the third quarter.