Why Mike D'Antoni failed in L.A.

Mike D'Antoni stepped down Wednesday evening as Lakers coach reportedly over the team's refusal to pick up the 2015-16 option on his contract. Without the extra year, D'Antoni was essentially a lame-duck coach for the upcoming season.

His brand of basketball was supposed to usher in a modern era of Showtime, but other than brief pockets of harmony strewn across two seasons, the Lakers never seemed to grasp the full potential of the offensive system. What went wrong?