What can fans expect from Kristaps Porzingis in his season debut? Here's everything Joe Mazzulla said about the big man's return to action tonight.

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.

Thankfully for the Celtics, rookie shooting guard Baylor Scheierman does not see Celtics head coach Joe Mazzulla sending him to Maine as a demotion.

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.

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

Joe Mazzulla has been a quote machine since taking over as the Boston Celtics' head coach. Here is a collection of his most memorable soundbites.

But when it comes to Boston Celtics head coach Joe Mazzulla, a very different approach to physicality is evident. Not only does Mazzulla not eschew physicality for his stars, he seeks it out up and down the roster.

In the third quarter of Friday night’s NBA Cup game against the Washington Wizards, the Boston Celtics were down 66-63. After Jaylen Brown didn’t get a foul call on a drive, Celtics head coach Joe Mazzulla was upset with the officials and had to be held back by his assistant coaches.

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.