Another example of the primary characteristic that has led to his historic greatness: adaptability. Many clamored for some zone looks years ago, but he made the change recently because a confluence of events necessitated it: The "one-and-done" era where kids leave sooner, and don't have the years to development in K's man-to-man system and become proficient at that level; the new rules to hinder contact on ball handlers; and, in general, the rise of overall athleticism and decline of "skill" in college basketball - I think that is the biggest AAU contribution, for better or worse: kids don't play in passing/cutting, etc. systems in AAU, they play in iso and ball screen situations almost exclusively, so they come to college with, if nothing else, the ability to drive and attack. Coach is smart enough to see that all those things make his traditional attacking man-to-man a precarious thing to rely on exclusively.