BOSTON – (Staff Report from Official News Release) – The NBA announced Boston Celtics head coach Joe Mazzulla was named the 2025-26 NBA Coach of the Year. He becomes the fourth Celtics head coach to win the award (Auerbach, Heinsohn, Fitch), after Mazzulla and his coaching staff steered Boston to the No. 2 seed in the Eastern Conference with a 56-26 regular season record. Mazzulla takes home his first Red Auerbach Trophy this season with the help of his assistant coaches and staff: Sam Cassell, Tony Dobbins, D.J. MacLeay, Da’Sean Butler, Nana Foulland, Amile Jefferson, Tyler Lashbrook, Craig Luschenat, Ross McMains, Alex Merg, Phil Pressey, God Shammgod Jr., and Steve Tchiengang.
“Thank you to our players who compete and give it everything they have each night,” said Mazzula. “I am grateful for every member of the Celtics organization whose dedication impacts winning every day. This award belongs to our staff, who are there for the guys every day. Their relentless work ethic improves our team daily. This award should be named, staff of the year.”
The NBA Coach of the Year Award trophy is named in honor of Naismith Memorial Basketball Hall of Famer Red Auerbach. The legendary head coach guided the Celtics to nine NBA championships, including eight in a row from 1959-66.
“This is well deserved recognition and a testament to both Joe and his staff,” said Celtics President of Basketball Operations Brad Stevens. “With all of our unknowns entering the season, Joe did a fantastic job building and growing a team. He pours everything he has into competing at a high level, while helping players find the best versions of themselves within the framework of a team. On top of all of that, Joe leads with an authentic care for the Celtics and everyone he works with – players, coaches, and staff.”
Ranking second in the NBA in offensive rating (120.0) and fourth in defensive rating (111.7), Boston was one of two teams this season to be in the top four in both offensive and defensive rating. The Celtics also led the league in several categories this season, including fewest turnovers per game (12.4), fewest opponent points in the paint per game (40.1), and fewest steals allowed per game (6.2). The Celtics averaged 16.9 second chance points per game this season, the team’s most in the play-by-play era, and averaged the team’s most offensive rebounds per game (12.5) since the 1999-2000 season. Boston was tied for the league lead in games allowing 100 points or less (22) this season and led the NBA in games with 20+ 3-pointers made (16).
Mazzulla was named Eastern Conference Coach of the Month for December, his fifth career monthly honor, after guiding Boston to a 9-3 record in December with a league-best 124.3 offensive rating. He earned his 200th career victory in just 275 games, making him the third-fastest coach in NBA history to do so behind Steve Kerr (238 games) and Phil Jackson (270 games).
In four seasons as Boston’s head coach, Mazzulla owns a 238-90 regular season record (.726 winning percentage) and has gone 36-21 (.632) in the playoffs.