Joe Mazzulla holds a commanding lead in the NBA Coach of the Year market due to the Boston Celtics’ league-leading regular season record and consistent execution despite roster turnover and external skepticism about a potential gap year. Traders have priced in his roster management, in-game adjustments against elite defenses, and ability to maintain high standards across a deep group featuring multiple All-Stars. JB Bickerstaff’s work with the Detroit Pistons and Mitch Johnson’s early impact in San Antonio remain secondary factors, reflected in their low single-digit implied probabilities. The only realistic scenarios that could shift the outcome involve an unforeseen late collapse by the Celtics or a voter preference for another finalist’s narrative that has yet to gain traction in recent standings or head-to-head trends.