BOSTON (AP) -- The Boston Celtics have looked elimination in the face four times this postseason and still haven't blinked.
Derrick White had 24 points, including six 3-pointers, and the Celtics dominated the Miami Heat 110-97 on Thursday night in Game 5 to extend the Eastern Conference finals.
Marcus Smart had 23 points and five steals. Jayson Tatum and Jaylen Brown finished with 21 points apiece as the Celtics won their second straight and trimmed Miami's series lead to 3-2. The Celtics are halfway to becoming the first team in NBA history to overcome a 3-0 deficit to win a series.
"We've got to do whatever it takes to get a win," White said.
Boston also survived two elimination games in the second round against the 76ers. Teams that fell behind 3-0 are 0-150 all-time in series.
"It just says that our backs are against the wall and we're sticking together and we're competing at a high level to give ourselves a chance," Celtics coach Joe Mazzulla said.
Game 6 is tonight in Miami, where the Heat will try again to become the second No. 8 seed to reach the NBA Finals in the current format, which dates to 1984.
"We're always going to stay positive, knowing that we can and we will win the series," the Heat's Jimmy Butler said. "We just have to close it out at home."
A day after the Florida Panthers punched the franchise's first ticket to the Stanley Cup Finals since 1996, for the second straight game the Heat were denied a spot in the NBA Finals.
"One game doesn't lead to the next game," Heat coach Erik Spoelstra said. "It just doesn't matter. It's about collectively preparing and putting together a great game. We'll play much better on tonight. That's all we just have to focus on right now."