Joe Mazzulla’s defensive mind has shaped the Celtics’ identity, turning versatility into an ever-evolving weapon. By ...

The Boston Celtics lost 118-112 Wednesday night to the top seed in the Western Conference, the Oklahoma City Thunder.

Celtics coach Joe Mazzulla isn’t all the way through the new HBO documentary “Celtics City” yet. He is busy attempting to lead the Celtics to back-to-back titles, after all, and the playoffs ...