In this paper I argue for a cross-disciplinary approach to teaching sport ethics. I call this a logical and evolutionary account because information that emanates from cell biology, anthropology, philosophy and everywhere in between, I claim, is needed in developing effective fair play pedagogies. The gist of the argument is this: We need to teach smarter, not just harder. Teaching smarter, I say, comes from an understanding of human nature and the logic of sport. I discuss animal behavior, emotions, genetic predispositions, human evolution, the structure of games, philosophical idealism, and other factors in producing five recommendations for teaching sport ethics.