| Well it's a slippery slope. For the most part I just go by their "official" bbref first name, but I made a couple judgment call exceptions for extremely commonly-used nicknames like Fergie/Ferguson Jenkins, Catfish/Jim Hunter, because they really did go by both names to significant degrees. I've never heard David Cone go by Dave, Eckersley never went by Denny, and McLain never really went by Dennis. |