- Joe Mazzulla won his first playoff game as a head coach when the Celtics defeated Atlanta on Saturday. Mazzulla knows that best-of-7 series are a grind and he’ll have to be quick to make adjustments, Jared Weiss of The Athletic writes. “I’m excited because of what a series brings about, the mental toll, the emotional toll, the opportunity for adjustments, the opportunity for doing different things,” Mazzulla said “I’ve seen what it represents, I’ve seen the tug of war.”