Joe Mazzulla, the head coach of the Boston Celtics, has been instrumental in the development of several players since joining the franchise in 2019. Under his guidance, players like Jayson Tatum and Jaylen Brown have flourished, displaying noticeable growth in their performances. Mazzulla's influence even extends to players like Aaron Nesmith, who, after being traded to the Indiana Pacers, credits Mazzulla for his development during his early career with the Celtics.

Nesmith's contributions to the Pacers have been pivotal as the team reaches the NBA Finals for the first time since 2000. His growth as a player is a testament to the coaching foundations laid by Mazzulla, highlighting the long-lasting impacts a coach can have on a player's career trajectory, even after they part ways.