Head coach Joe Mazzulla has signed a multi-year contract extension with the Boston Celtics.
The team announced his signing on Friday but did not reveal either the length of the deal or its monetary value.
We have signed Joe Mazzulla to a multi-year contract extension ?? pic.twitter.com/V82bnnSXte
— Boston Celtics (@celtics) August 8, 2025
Mazzulla, 37, has compiled a 182-64 regular-season record and a 33-17 playoff mark in three seasons with Boston. The Celtics won the NBA title in 2024.
He was the youngest head coach to win the NBA Finals since the 1968-69 season, when Bill Russell, then 35, led the Celtics to the NBA championship as a player-coach.
“We are very excited that Joe has agreed to extend with the Celtics,” said Brad Stevens, the team’s president of basketball operations. “He understands the job and has a passion for the Celtics that is only rivaled by our most die-hard fans. He’s worked hard and accomplished amazing things in his first three years as a head coach — including averaging over 60 wins per season and winning the 2024 NBA Championship. Joe is a gifted leader who brings a consistent commitment to learning, improving and maximizing each day we get to compete for the Boston Celtics.”
A Rhode Island native, Mazzulla was a Celtics assistant coach for three seasons before taking the helm.
“This is truly a blessing,” he said. “I would not be here without my faith, my wife and my children. We are thankful for the partnership with our ownership groups, Brad’s mentorship and the support of our staff. Most importantly, I am grateful for the players I have been able to coach the past three seasons. I look forward to competing for the Celtics and the city of Boston.”
The Celtics will be a new-look team in the 2025-26 season.
Star Jayson Tatum is recovering from an Achilles injury suffered in the playoffs and could miss the entire campaign. The Celtics also traded away veterans Jrue Holiday and Kristaps Porzingis and aren’t expected to bring back Al Horford.
–Field Level Media
