CELTICS WIN 18th NBA CHAMPIONSHIP

They helped the Celtics cap a postseason that saw them go 16-3 and finish with an 80-21 overall record. That 792 winning percentage ranks second in team history behind only the Celtics’ 1985-86 championship team that finished 82-18 820). Mazzulla, in his second season, at age 35 also became the...

Jayson Tatum put his hands behind his head, with TD Garden fans standing on their feet cheering around him, and took it all in. Walking to the bench, he wrapped both arms around Celtics coach Joe Mazzulla. The journey was complete. The Boston Celtics again stand alone among NBA champions.

Tatum had 31 points, 11 assists and eight rebounds, and the Celtics topped the Dallas Mavericks 106-88 to win the franchise’s 18th championship, breaking a tie with the Los Angeles Lakers for the most in league history. Boston earned its latest title on the 16th anniversary of hoisting its last Larry O’Brien Trophy in 2008. It marks the 13th championship won this century by one of the city’s Big 4 professional sports franchises.

“It means the world," Tatum said on stage after the team received the trophy from NBA Commissioner Adam Silver. "It’s been a long time. And damn I’m grateful.” Jaylen Brown added 21 points, eight rebounds and six assists, and was voted the NBA Finals MVP.

“I share this with my brothers and my partner in crime Jayson Tatum," Brown said after the 107th career playoff game he and Tatum have played together — the most for any duo before winning a title. Jrue Holiday finished with 15 points and 11 rebounds. Center Kristaps Porzingis also provided an emotional lift, returning from a two-game absence because of a dislocated tendon in his left ankle to chip in five points in 17 minutes.