Brian McCormick interrogates all of the lazy assumptions we as basketball coaches make. Bringing vast expertise in sports science, youth athletic development, and other research to bear, he then pieces together innovative, workable new approaches to developing basketball players and positioning teams for success. All of his books are worth owning, but The 21st Century Basketball Practice is especially valuable for coaches of any sport. It really crystallizes his research-based thinking about how to maximize player development and performance by ditching a lot of the traditional drills like the weave and default organizing principles like block segments. What do we as basketball coaches have to lose by experimenting with McCormick's small-sided games (instead of going through the motions with all those zig-zag slide drills, etc.)? Nothing at all, and our players will gain basketball intelligence, athleticism, and a lot more. This book encapsulates many of McCormick's most important insights. I also highly recommend Crossover, Developing Basketball Intelligence, and everything else he's written.