Boston’s 2025‑26 campaign finished with 56 wins, a No. 2 seed in the East, and a sweep by the Celtics that set the stage for Coach of the Year honors. Joe Mazzulla guided a roster hampered by Jayson Tatum’s Achilles injury to a playoff berth and a seven‑game first‑round exit against Philadelphia after a hard‑fought series the league lasting.

Mazzulla’s award makes him the youngest coach to win since 1975 and the fourth Celtics official to earn the honor, joining legends Fitch, Heinsohn and Auerbach. His 238‑90 record over four seasons tops the league, and the 2024 championship underscored the program’s rapid rise. The accolade reflects a culture of relentless improvement amid roster turbulence for the team and fans.

Mazzulla cited his coaching staff’s grind—long nights, film sessions, and strategic adjustments—as key to the Celtics’ success, noting they sacrificed personal time for the team's goals. Detroit’s J.B. Bickerstaff and San Antonio’s Mitch Johnson rounded out the top three, while Shai Gilgeous‑Alexander captured MVP. The awards season now concludes, leaving the league to reset for 2026‑27 the NBA once again.