Jimmy Butler scored a career playoff-high 47 points, and the Miami Heat forced a winner-take-all showdown for an NBA Finals berth by defeating Boston 111-103 on Friday.
The Heat leveled the best-of-7 Eastern Conference finals at 3-3 to set up a decider with the Celtics on Sunday at Miami.
"We know what we're capable of. We get to take it back to the crib and win Game 7," Butler said.
"We knew we were going to come in here and get one. We know we're going to win this next one, too."
Sunday's winner will face the Golden State Warriors in the NBA Finals that begin Thursday in San Francisco.
Butler hit 16-of-29 shots from the floor, 4-of-8 from 3-point range, and all 11 of his free throws in 46 minutes while contributing nine rebounds, eight assists, four steals and a blocked shot.
"Jimmy just brought his competitive will tonight," Heat coach Erik Spoelstra said. "And it was a will that would not let us lose."
Such faith inspired the superb effort, Butler said.
"My team, they've got so much belief in me. My coaches got so much belief in me," Butler said. "They give me that confidence to just go out there and play basketball the right way and just hoop."
Butler battled through a sore right knee to produce his fourth 40-point game of the playoffs and thanked a message from former Miami star guard Dwyane Wade for inspiring him.
"He was telling me I could do this," Butler said. "Knee a little banged up but nobody cares. Go out there and continue to build your legacy and it meant the world to me."
The Heat seek a second trip to the NBA Finals in three seasons, having lost to the Los Angeles Lakers in 2020. Miami last captured the NBA crown in 2013.
The Celtics seek their first trip to the NBA Finals since losing the 2010 title to the Los Angeles Lakers. The Celtics haven't won the NBA crown since 2008.
Jayson Tatum led Boston with 30 points while Derrick White had 22 off the bench and Jaylen Brown added 20.
Kyle Lowry added 18 points and 10 assists for Miami.
Victor Oladipo scored seven points in a 13-2 Miami third-quarter run that gave the Heat the biggest lead of the game to that point at 70-58, although Boston trimmed the margin to 82-75 entering the fourth quarter.
White sank a right corner 3-pointer with 4:43 to play, capping a 10-2 Celtics run and giving Boston a 97-94 lead.
But Butler's 3-point play with 2:06 remaining gave Miami a 102-99 lead and P.J. Tucker followed with a steal, a rebound and three free throws to give the Heat a 105-99 lead with 1:25 to play.
Tatum hit a floater for Boston but Butler answered with a long jumper over a defender as the shot clock expired to stretch Miami's lead to 107-101.
Tatum sank two free throws, but Brown was called for an offensive foul on Boston's next possession and the Heat made free throws down the stretch to seal the victory.
"Overall sloppy basketball on both ends," Celtics coach Ime Udoka said. "We can't have that."
- Butler started strong -
Butler had 14 points, five rebounds, four assists and two steals in the first quarter as Miami jumped ahead 29-22.
Tatum made a 7-0 run over 88 seconds to pull Boston within 32-31 early in the second quarter and Brown sank two free throws to give the Celtics their first lead at 41-40, although Miami seized a 48-46 halftime edge.
Butler had 21 first-half points while Tatum and Brown each scored 18.
Miami guard Tyler Herro, the NBA's Sixth Man of the Year, missed a third straight game with a groin injury.