Joe Mazzulla

Joseph Mazzulla (born June 30, 1988) is an American professional basketball coach who is the head coach for the Boston Celtics of the National Basketball Association (NBA). He played college basketball for West Virginia University as a point guard. Following his collegiate career as a point guard, Mazzulla went undrafted in the 2011 NBA draft, instead choosing to pursue a career in coaching at the college level, coaching at Glenville State and Fairmont State's basketball programs as an assistant coach for three seasons each before being hired to be an assistant coach for the Maine Red Claws in 2016. In 2017, Mazzulla was rehired at Fairmont State, this time as their basketball program's head coach. After these stints of coaching at the collegiate level and in the NBA G League, he joined the Celtics as an assistant coach in 2019. In September 2022, Mazzulla was named the interim head coach of the Celtics after head coach Ime Udoka was suspended for the entire season for engaging in an inappropriate relationship with a Celtics female employee. Mazzulla was named the full-time head coach in February 2023 after leading the team to a league-best 42–17 record at the NBA All-Star break. In his second season, Mazzulla led the Celtics to a league-best 64 wins and an NBA championship. He currently holds the highest winning percentage of any coach in NBA history with over 200 games coached. Mazzulla is also the youngest head coach to win the NBA Finals since Bill Russell did so in 1969 as a player-coach and is the ninth-youngest head coach to win the Finals in NBA history.