Congratulations to head coach Joe Mazzulla and the @celtics on winning an NBA record 18th championship🏆 Here’s a custom 1/1 we crafted for Coach Mazzulla that embodies the city of Boston.Congratulations to head coach Joe Mazzulla and the @celtics on winning an NBA record 18th championship🏆 Here’s a custom 1/1 we crafted for Coach Mazzulla that embodies the city of Boston.