It’s as easy as 3-2-1.

Just ask the New Rochelle High School boys basketball team. On Sunday, with just seconds left in the New York Section I Class AA boys basketball championship game against Mt. Vernon and down two points (58-60), they pulled of an unbelievable finish that included two steals and a half-court buzzer beater.

This is how Yahoo describes it: “Ladies and Gentlemen, say hello to what is absolutely, positively the most incredible, bizarre outrageous buzzer beater of 2013, at any level.”

“This might be the buzzer-beater of all time,” ESPN anchor Steve Levy said on SportsCenter Sunday night.

“The most amazing shot I’ve ever seen… .” That’s how the announcer calling the game put it.

That’s a lot of praise. And it’s deserved. With just about three seconds left (2.9 to be exact), New Rochelle’s Khalil Edney inbounded the ball from the opposite end of the court. It was intercepted by a Mt. Vernon player who then threw the ball in the air toward another teammate. That’s when Edney stepped up to intercept ​that​ pass and heaved a half-court prayer toward the hoop with 0.1 seconds left.

Nothing but the bottom of the net.

However, both teams started celebrating on the court, both thinking they had just one. The referees huddled and called the shot good (there’s not video review in NY high school basketball).

It was a good call. 3 seconds, 2 steals, 1 game-winner. Just watch — and pay special attention to the announcers:

“I can’t believe it happened. I’m in shock right now,” Edney told ESPN.

“I just threw it up. I thought it was gonna bounce off the front rim, but it was all net,” he added. “I couldn’t believe it.

“I didn’t know whether it counted or not [at first]. In my eyes, it counted, so I started running around. Everybody stormed the court. I was under the pile when we found out it might not count. Then the referees huddled, and when they said the shot was good, I started running around again and screaming.”

Part of that might be because as the team’s center, Edney hadn’t hit a three pointer all season — the buzzer-beater was his first.

When it counted most.

​Read more on Edney, who will play quarterback in junior college next year, over at ESPN.