Joe Mazzulla's ascension to head coach of the Boston Celtics following Ime Udoka's departure was fraught with challenges. Initially, Mazzulla struggled with game management and substitutions but made substantial improvements in his second season, leading the Celtics to an NBA championship. His ability to adapt and learn quickly proved crucial as the team looks to defend its title.

Mazzulla credits his successful Finals run to advice from Pep Guardiola, the Manchester City manager, asking about the challenges of winning a championship. Now, with the Celtics positioned as the second seed in the Eastern Conference, Mazzulla's focus remains on maintaining team health to bolster their chances at a repeat amidst formidable competition from teams like the Cleveland Cavaliers, New York Knicks, and Milwaukee Bucks.