This was as bad as Knicks fans have feared.

Before the tip the Knicks learned that leading scorer and guy they can’t do without Carmelo Anthony was in fact going to be out due to the sprained ankle suffered Monday.

Then once the ball went up for that tip the Oklahoma City Thunder looked every bit the contender — they shot 70 percent in the first quarter — and this was a blowout early.

And I mean blowout — the 123-94 Thunder win (that’s 29 points for those of you scoring at home) was the worst home loss by a team in NBA Christmas Day history.

Which makes Mike Woodson’s job security that much more tenuous. He has valid excuse that ‘Melo (and Metta World Peace) was out for this game, but the fact is his team was demoralized and listless. Where in the first game Christmas Day you saw a Bulls team ravaged by injuries (no Derrick Rose, no Luol Deng) fight for a win, the Knicks rolled over.

It was that way from the aforementioned opening tip. You can say it was the Thunder’s shooting, blame the Knicks defense (it was a little of both), the fact remains the Thunder couldn’t seem to miss in the first quarter — they shot 70 percent over the first 12 minutes. Kevin Durant was 5-of-5 for 13 points (he finished with 29 points on 16 shots), Serge Ibaka was 3-3 (he finished with 24 points on 14 shots), Kendrick Perkins had 7 points and was 2-of-2. Remove Russell Westbook’s start (1-of-6 in the quarter) and the Thunder were 13-of-14 shooting.