[quote] it is useless as a metric of player performance, because it does not in any way include the per-player distribution (i.e. player performance).[/quote] Read that carefully, its obvious that if theres 80 kills in a game that means there would have been 80 deaths (not including suicides) but thats an obvious stat which does not represent each individual players skill. [quote]In this specific case, [b]the average KDR of a player [/b]is calculated by the total kills / deaths. Simple I believe.[/quote] The average K/D of players and the total kills and deaths per game are two different things, one can be used as a reference for a players skill the other is a useless stat which will always be the same.