Heat’s offensive display in Game 1 was stunning. But how sustainable is it vs. Bucks?

The Miami Heat’s formula for success against the Milwaukee Bucks’ elite defense is simple, but a tough one to actually execute.

Because the Bucks’ defensive philosophy is designed to limit opportunities around the rim and from three-point range, the Heat knows it needs to take advantage of the space the Bucks give up on the in-between looks from midrange but also make the most of its low volume of threes.

Heat’s Tyler Herro to undergo surgery on Friday, expects to be out until at least NBA Finals

Mission accomplished in Sunday’s Game 1 win over the Eastern Conference’s top-seeded and heavily favored Bucks at Fiserv Forum to take a 1-0 lead in the best-of-7 first-round playoff series, when the eighth-seeded Heat shot an efficient 21 of 42 (50 percent) on a high volume of midrange attempts and a season-best 15 of 25 (60 percent) on a low volume of three-point attempts to set a franchise record for the most points scored in a playoff game with 130. The Heat became just the eighth team in NBA history to shoot 60 percent or better from beyond the arc on at least 25 three-point attempts in a playoff game.

“I feel like they’re going to keep playing that coverage and let us get to our sweet spots,” Heat center Bam Adebayo said. “I feel like we’ll live with those results.”

The question is: How can the Heat even come close to replicating those results in Game 2 on Wednesday at Fiserv Forum (9 p.m., NBA TV and Bally Sports Sun) against a desperate Bucks team looking to avoid a 2-0 hole?

The Heat’s offensive performance in Game 1 is an outlier compered to its season-long production after closing the regular season with the NBA’s sixth-worst offensive rating and fourth-worst team three-point percentage. But the Heat actually was one of the better midrange shooting teams in the league, finishing the regular season with the seventh-best team shooting percentage from that area of the court at 45.5 percent but not as good as the 50 percent it shot on high volume Sunday.

The Heat’s leading duo of Adebayo and Jimmy Butler will be critical to keeping the offense humming against a tough Bucks defense, especially with one of Miami’s best pure scorers Tyler Herro out for the rest of the series after breaking his right hand in Game 1.

With the Bucks’ defensive scheme built around center Brook Lopez playing deep drop coverage to protect the rim while forward Giannis Antetokounmpo lurks on the weak side and perimeter defenders around them fight over screens to challenge three-point looks, Adebayo and Butler know they will need to continue to hit a high percentage of their midrange shots to solve Milwaukee’s defense.

In Game 1, Adebayo shot 8 of 16 (50 percent) on non-rim two-pointers and Butler shot 7 of 17 (41.2 percent) on non-rim two-pointers to combine for an efficient 15-of-33 (45.5 percent) on those opportunities.

“Taking what the defense gives me, being aggressive, looking to get into the paint and finish whenever I can and pass the ball whenever I cannot, score the ball,” Butler said of his offensive mind-set in Game 1. “That was the game in a nutshell. Try to make sure that we get a shot on goal no matter who’s shooting the basketball.”

But not even that midrange mastery be enough in most games against arguably the best team in the NBA, as the Bucks usually dominate teams from three-point range because of their ability to limit three-point opportunities. That usually leaves opponents working to beat Milwaukee with two-point midrange shots while the Bucks averaged the fourth-most three-point attempts in the NBA this regular season at 40.3 per game.

That typically turns into a math problem that leaves the Bucks with a big advantage, as Milwaukee outscored opponents from three-point range in 58 games this regular season (tied for the second-most in the NBA with the Boston Celtics behind only the Dallas Mavericks). The Bucks went 47-11 in those games.

The Bucks put up 45 threes to the Heat’s 25 three-point attempts in Game 1. But the only reason Miami was able to outscore Milwaukee 45-33 from beyond the arc was because the Heat shot 60 percent or better from deep in a playoff game for just the third time in franchise history and the Bucks shot worse than 25 percent from three-point range in a game for just the fifth time this season.

“We’ve got to guard their entire team better,” Bucks coach Mike Budenholzer said of the Heat after Game 1. “They had twos, they had threes, they had everything [in Game 1].”

It’s worth noting that the Bucks also had an offensive performance in Game 1 that will be hard to replicate. While Milwaukee did shoot just 11 of 45 (24.4 percent) on threes, it shot an incredible 34 of 46 (73.9 percent) on two-pointers that included 12 of 13 (92.3 percent) at the rim, 11 of 15 (73.3 percent) on non-rim paint shots and 11 of 18 (61.1 percent) on non-paint twos.

It marked just the second time this season that the Bucks have closed a game shooting 73 percent or better on twos.

“I think Game 2 will be different than Game 1 and Game 3 will be different than the prior two,” Heat guard Gabe Vincent said when asked about the team’s shot profile in the first game of the series. “Every game is different, so it’s hard to tell. We’ll have to get back to the film and figure out what adjustments we’ll make and go from there.”

Antetokounmpo was limited to 11 minutes in Game 1 because of a lower back contusion. But Budenholzer expressed optimism on Tuesday when discussing Antetokounmpo’s status for Game 2, and his potential return will make the Bucks’ defense significantly tougher.

Not much about the Heat’s offensive performance on Sunday seems especially sustainable, other than Adebayo and Butler’s midrange success. And the Heat knows it will need more than just midrange twos from Adebayo and Butler to beat the Bucks three more times to win this series.

But this is supposed to be hard. Only five No. 8 seeds have eliminated a No. 1 seed in the first round of the playoffs, with the Heat working to become the sixth team to do it since the current 16-team NBA playoff format was instituted for the 1983-84 season.

“Right now, it’s by any means necessary,” Heat coach Erik Spoelstra said when asked about the team’s ultra-efficient offensive display in Game 1. “I’m not even looking at that because the next game could be totally in the mud and it could be an Eastern Conference game in the 90s.”