Baseball Reference never stops improving, which is one of the reasons I love the place. The searches keep getting better. It gets easier and easier all the time to find cool stuff. Love it. But I have to admit: dWAR baffles me. dWAR is Baseball Reference’s “Defensive Wins Above Replacement.” It is such a convenient concept — a one-stop number that estimates how much value above replacement level a player brings with his defense — that I look at it all the time. But, like Inigo says in the movie, I don’t think it means what we think it means.