MIAMI — Only a few minutes after the Miami Heat’s winning streak reached 19 games, Erik Spoelstra laid down the next challenge.

And it wasn’t to win a 20th straight game.

Instead, it was to simply win on Wednesday.

Dwyane Wade scored 23 points and on a night when the stat sheet would suggest a struggle, the Heat rolled once again, extending their winning streak and leading wire-to-wire in beating the Atlanta Hawks 98-81 on Tuesday.

Next up: The Heat are in Philadelphia on Wednesday.

“It’s a privilege for us to get in our cars and hop on a plane and get into Philly at 4 a.m. after this win and do this again tomorrow night,” Spoelstra said. “That’s the way we’re going to approach it. No excuses.”

For about six weeks now, no excuses have been needed — not even on nights where things went far from perfectly for the reigning NBA champions.

The Heat shot only 43 percent and LeBron James was just 3 for 11 from the field, with the field-goal total matching his lowest from any regular-season game in more than three years.

And they won by 17.

“Let’s be honest, guys,” said James, who scored 15 points. “We’re not sitting here and saying this is not something special. This is an unbelievable streak that we’re on. We’re playing great basketball. We’re winning in different phases of the game, we’re playing different styles, we’ve won every game, on the road, at home, double-overtime games, end-of-regulation games, whatever the case may be.”

Chris Bosh and Mario Chalmers added 14 apiece for the Heat, who matched the fifth-longest streak in NBA history.