Celtics head home looking to close out top-seeded Heat

BOSTON » Jayson Tatum wants experience to be the Celtics’ guide as they return home with a chance to wrap up their first trip to the NBA Finals since 2010.

Tatum was a rookie during Boston’s run to Eastern Conference finals in 2018, when it grabbed a 3-2 series lead over LeBron James and the Cleveland Cavaliers.

He also remembers what it felt like as the Celtics watched James unravel their dreams with a 46-point performance in the Cavaliers’ Game 6 win, followed by a 35-point effort in Cleveland’s decisive Game 7 victory at TD Garden.

Boston again has a 3-2 conference finals lead, this time over the topseeded Miami Heat with Game 6 set for Friday.

Tatum said this feels different.

“I’m a lot better. (Jaylen Brown) is. We’re just older. And we’ve been through those tough times,” Tatum said. “But the mindset and the talk that we had after the game was we were down 3-2 last time (in semifinals vs. Bucks) and had to go on the road to win Game 6 and we did. So we can’t think that it’s over with.”

Tatum wants to see Boston maintain the mentality of the underdog.

“We need to go back home like we’re down 3-2. With that sense of urgency that it’s a must-win game,” he said. “Not relaxing because we’re up. ... The job’s just not finished yet.”

The Celtics do seem to be facing a Heat team that over the past two games hasn’t come close to resembling the one that won Games 1 and 3.

All-Star Jimmy Butler insists he’s fine but appears to be at least slowed by the right knee inflammation that sidelined him during the second half of Miami’s Game 3 win. Over the past two games, he’s scored just 19 points while shooting 7 of 32 from the field.

Kyle Lowry has all but disappeared offensively since returning from a hamstring injury and reigning Sixth Man of the Year Tyler Herro has missed the past two games with a groin injury.