The Celtics have signed coach Joe Mazzulla to a multiyear contract extension. Mazzulla has won at least 57 games in each of ...

The Celtics made the move to trade Georges Niang to shed more salary, and more details have emerged from the trade.

The Boston Celtics looked ready to be perennial championship contenders after winning the NBA Championship just one year ago, but now find themselves in flux while being handled a reality check ...