It's generally better not to wander off into definitional thickets by trying to determine what things are games and what sports. (I seem to recall some bloggers such as Matthew Yglesias and Will Baude were musing on this recently, perhaps on the old chestnut, is chess a game? Or a sort of mathematico-logical puzzle to which we have not found the solution? But I'm too lazy to look it up.) It's much more advisable to gesture broadly in some late-Wittgenstein, vague hand-waving way at some disjunct class of things. This will protect you from ever getting yourself into the position Dan Drezner has here, in which he commits himself to the claim that a hot-dog eating contest is a sport, while boxing is not. You see, the former has an undisputed winner, based on solid, numerical facts about hot dogs consumed. The latter is tainted by an unacceptably large admixture of judging. I judge this result an unpromising advertisement for a theory of sports.