Evaluating NBA coaching performance is a difficult and imperfect exercise. This is because the overwhelming majority of the work done by coaches happens during the part of the season that outsiders are not privy to; basically, everything outside of the in-game experience. Coaches prepare and conduct practices, scout opponents and present reports to the players with game-to-game strategies. These include their own plans of attack on offense and how to counter the opposition with defensive matchups and principles. While trying to carry out these fundamental tasks, NBA coaches are often faced with the less scientific duty of managing egos and expectations; egos and expectations of twenty-somethings earning million-dollar salaries. With a decision to insert Player X into the starting lineup comes the task of telling Player Y that he’s now coming off the bench. Unlike fans managing their fantasy or 2K rosters, this cannot be done coldly and without regard for the human elements.
Coaches do other things too, like coordinate organizational priorities with the front office. This can mean emphasizing the development of young talent over “winning now.” Who needs to play, and who might need to be traded? In places like Houston, it seems like the coaches are required to implement specific x’s and o’s tactics, such as the three-point shot. Coaches need to speak to media on essentially a daily basis, which can be difficult when trying to both maintain positive vibes with the fan community while not disclosing sensitive or secret material.
Despite this mountain of data that we do not and never will possess, we still sound off on coaching performance and talk ourselves into some pretty high levels of certainty about who are the best and worst in the profession. People generally agree that Gregg Popovich is a great coach, and Byron Scott is a bad one. In recent years in Minnesota, it has seemed like a coaching-competence roller coaster going from Dwane Casey (good) to Randy Wittman (bad) to Kevin McHale (good) to Kurt Rambis (bad) to Rick Adelman (good) and then to Flip Saunders and his unexpectedly-quick replacement, Sam Mitchell, whose job is just beginning.
How good of a job is Sam Mitchell doing? How would we measure it?