They were drinking apple cider, taking selfies, and watching President Joe Biden execute a pump fake. But, Friday night against the young and unestablished Wizards, the Celtics got off to a sluggish start.

Could you feel that?” Mazzulla said. "It wasn't really about energizing the team, it was really about manipulating the environme

Some NBA head coaches are very cautious with how they use their star players, taking care to avoid putting them in positions where intense physicality could end up seeing a player get hurt. But when it comes to Boston Celtics head coach Joe Mazzulla, a very different approach to physicality is evident.

The Boston Celtics are set to take on the Toronto Raptors in their 14th game of the young season on Saturday. The Celtics sit with a 10-3 record and will look t

After ending the Cavaliers' unbeaten season, Joe Mazzulla expressed what he likes about the matchup for the Celtics.

I’m not talking to you during the season. I’m not waving to you at the national anthem. I’m not doing that. You’re an enemy.”

Boston Celtics coach Joe Mazzulla was called for a technical foul in the third quarter of Friday night's win over the Washington Wizards. The foul, seen below, was assessed to Mazzulla as he was being held back from referees by assistant coaches Tony Dobbins and Sam Cassell.

Celtics head coach Joe Mazzulla knows that even friends can be a distraction at times, and he explained how with a story about a hug.