Exploring the role and impact of a head coach

Photo by Barry Chin/The Boston Globe via Getty ImagesThe Boston Celtics landscape is experiencing an earthquake. With the news that Danny Ainge will be stepping down as the Celtics President of Basketball Operations, and Brad Stevens will be making the move into the front office, the Celtics enter the off-season searching for a new head coach.

The rumor mill is going to be rife with possible targets and candidates, and we’re going to wade through an enormous amount of smoke before finding out who Stevens successor will be. But do we really know what a head coaches role should be?

Generally a head coaches position isn’t clearly defined to those outside of professional basketball circles, so…