Photo: Boston Celtics/Twitter

Joe Mazzulla is officially the head coach of the Boston Celtics, with the interim tag now removed from his job title, the team announced (via Twitter). Mazzulla also received a contract extension.

“As he has shown, Joe is a very talented coach and leader,” said president of basketball operations Brad Stevens. “He has a unique ability to galvanize a room around a mission. We are thankful for the work he has done to help get us to this point, and excited that he has agreed to lead us into the future.”