LAKE BUENA VISTA, Fla. >> Jimmy Butler kept hearing the same message from teammates in every conversation tonight.

“Win the game.”

He listened to them, and delivered.

Butler scored 14 of his playoff career-high 40 points in the fourth quarter, Goran Dragic added 27 and the Heat clamped down defensively in the final three quarters to beat the Milwaukee Bucks 115-104 in Game 1 of their Eastern Conference semifinal series tonight.

“I felt like I took it up a level in the fourth quarter,” Butler said. “If that needs to happen every game, I’ve got to be able to do it. But we’ve got so many guys capable of doing it for us.”

Bam Adebayo had 12 points, 17 rebounds and six assists for the fifth-seeded Heat, who are 3-1 overall against the top-seeded Bucks this season. Tyler Herro added 11 points for Miami, which improved to 5-0 in the postseason.

Butler joined only LeBron James and Dwyane Wade — the first person who texted Butler postgame Monday night — as players with a 40-point playoff effort for Miami. He was 13 for 20 from the field, 12 for 13 from the line and 2 for 2 from 3-point land.

“He wants these kind of moments,” Heat coach Erik Spoelstra said.

Khris Middleton scored 28 points for Milwaukee, which also dropped Game 1 of its first-round series against Orlando. Brook Lopez had 24 points on 8 for 10 shooting, and Giannis Antetokounmpo had 18 points, 10 rebounds and nine assists for the Bucks.

But Antetokounmpo’s night will likely be best remembered by what he did at the foul line: The reigning MVP went 4 for 12 from the stripe, the worst performance by anyone with at least 12 free-throw attempts in a playoff game since Andre Roberson went 2 for 12 for Oklahoma City on April 23, 2017 against Houston.

“He just has to stick with his routine, stick with what he’s been doing, continue to have a lot of confidence, continue to attack, continue to get to the free throw line,” Bucks coach Mike Budenholzer said. “He’s going to make them. We have total faith in him.”

Kyle Korver added 11 for the Bucks, who scored 40 points on the way to an 11-point lead after the first quarter — then managed 64 the rest of the way. The Bucks played without point guard Eric Bledsoe, out with a strained right hamstring.

“We’ve been here before,” Antetokounmpo said. “Going down 0-1 against Orlando, we did the same thing last year against Boston … We’ve got to come out and play Game 2, man. It’s a big game. Our season is on the line. We’ve got to come out, play hard, watch the tape, make the adjustment, be aggressive, make the right play and hopefully we can win the game.”

Miami led 92-86 after three quarters, after trailing for most of the game to that point — then managed only three points in the first 6:09 of the fourth quarter.

The Bucks didn’t exactly exploit that slump.

Marvin Williams’ three-point play with 7:40 left got Milwaukee within 95-93, and it stayed a one-possession game for nearly five minutes. Antetokounmpo scored for a 96-95 lead midway through the fourth, before Butler drove and got a baseline floater to fall on the next Miami possession to put Miami back on top for good.

Butler’s 3-pointer with 3:03 left pushed the lead to 102-96, and Herro — after Adebayo extended a possession with an offensive rebound — connected on a 3 with 1:34 left to make it 109-101.

Game 2 is Wednesday.

“Just like they’ll be studying their film to get better, we’ll be doing the same,” Butler said.

TIP-INS

>> Heat: Miami is now 24-20 in Game 1s. … Duncan Robinson, a big part of Miami’s success this season, had only one field goal — a banked-in 3-pointer. … Butler’s previous high in a Heat uniform was 38 points. His previous playoff career-best was 36, for Philadelphia last year.

>> Bucks: Milwaukee is now 20-32 in Game 1s. … Antetokounmpo’s son Liam was among the first fans in bubble history; Monday was the first day that some NBA players could have family members join them at the restart. … Lopez had two fouls at the half, then two more in the first 40 seconds of the third quarter. … Middleton and Lopez combined for 40 points in the first half, 12 in the second.

RILEY ARRIVES

Heat President Pat Riley was at the game, though he’s not allowed to be near the team or their hotel because of the health and safety rules of the restart. Spoelstra said he was glad Riley and general manager Andy Elisburg — who was at some first-round games as well — could see the “historic” bubble. “It’s still enough to be able to feel the emotions of the playoffs and where we are,” Spoelstra said.

VOTING SITE

Fans will be able to go to Milwaukee’s Fiserv Forum this fall, to vote. The city of Milwaukee announced today that the Bucks’ home arena will be an early voting site for the 2020 general election, open from Oct. 20 through Nov. 1. Election Day is Nov. 3. Miami is also seeking to turn its home arena into an early voting site this year.

UP NEXT

Game 2 is Wednesday.