Celtics’ singular goal: Stop Heat 3’s to force Game 7

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Boston Celtics' Kemba Walker (8) reacts to a play against the Miami Heat during the second half of an NBA conference final playoff basketball game Friday, Sept. 25, 2020, in Lake Buena Vista, Fla. The Celtics won 121-108. (AP Photo/Mark J. Terrill)

LAKE BUENA VISTA, Fla. – There have been two undeniable truths about the Miami Heat this season.

They must make 3’s to win.

They aren’t invincible with sizable leads.

The Boston Celtics have scouting and analytics teams that undoubtedly know these trends. But, really, so would anyone who simply can read a boxscore.

Take away Miami’s 3’s, and the Heat are easier to beat. The Celtics proved that again in Game 5 of the Eastern Conference finals when they extended their season with a victory — and will aim to take the same tact Sunday night when they meet the Heat again in another must-win for Boston.

“They’re going to hit some shots, they’re going to make some plays,” Celtics forward Jayson Tatum said. “They’ve got some good players. We’re just trying to make it as tough as we could.”

The Heat have played 87 games this season and shot below 20% from 3-point range in just three of them — one of them being Friday night, when the Celtics prevailed 121-108 to cut Miami’s lead in the series to 3-2.

Miami was 7 for 36 from deep, just 19%.