In a heartfelt and widely celebrated gesture, Boston Celtics superstar Jayson Tatum sent social media into a frenzy on Tuesday night by publicly honoring head coach Joe Mazzulla following his historic selection as the 2025-26 NBA Coach of the Year.
Rather than a controversial decision or contract-related bombshell, Tatum’s “shocking” move was one of pure appreciation: sharing a photo of Mazzulla on his Instagram Stories accompanied by a message of gratitude. The simple yet powerful tribute quickly spread across platforms, amplified by similar congratulations from teammates Luka Garza, Ron Harper Jr., and others within the Celtics organization.
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The timing could not have been more fitting. Mazzulla, 37, became the first Celtics head coach to win the Red Auerbach Trophy since Bill Fitch in 1979-80 — ending a 46-year drought. Remarkably, no Celtics coach had claimed the honor during the franchise’s five championship runs in that span (1981, 1984, 1986, 2008, and 2024). Mazzulla now joins elite company alongside Fitch, Red Auerbach (1964-65), and Tom Heinsohn (1972-73). He is also the youngest recipient of the award since Phil Johnson in the 1974-75 season.
Under Mazzulla’s leadership this season, the Celtics posted a strong 56-26 record and secured the No. 2 seed in the Eastern Conference. This achievement stands out even more considering expectations heading into the year. After Jayson Tatum’s Achilles injury in the previous postseason, many analysts predicted a “gap year” for Boston. Instead, Mazzulla, Jaylen Brown, and the supporting cast defied the odds.
The team finished the regular season ranked No. 4 in defensive rating (111.7), No. 2 in offensive rating (120.0), and No. 4 in net rating (+8.3), showcasing remarkable balance and resilience.
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Mazzulla dedicated the award to his coaching and support staff, a group that includes respected assistants such as Sam Cassell, Tony Dobbins, D.J. MacLeay, Da’Sean Butler, Nana Foulland, Amile Jefferson, Tyler Lashbrook, Craig Luschenat, Ross McMains, Alex Merg, Phil Pressey, Matt Reynolds, and God Shammgod Jr.
“Thank you to the Lord for the platform he has given me, and to my wife and family who support me on this journey,” Mazzulla said. “Thank you to our players who compete and give it everything they have each night. 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.”
Celtics President of Basketball Operations Brad Stevens echoed the praise, highlighting Mazzulla’s ability to build and grow the team amid uncertainty.
“This is well deserved recognition and a testament to both Joe and his staff,” Stevens said. “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.”
The outpouring of support from players, led by Tatum’s visible appreciation, underscores the strong culture Mazzulla has cultivated in Boston. What began as a quiet Instagram Story quickly became a viral moment of unity — a reminder that championship organizations are built on mutual respect between stars and coaches.
As the Celtics look ahead, Mazzulla’s recognition adds another layer of momentum to a franchise that continues to redefine excellence. Tatum’s gesture, while simple, spoke volumes: in Boston, loyalty and appreciation for great coaching are never out of season.