Night Owl Cards

  We tend to measure our collections cumulatively, stressing the total number of cards for a particular player or team. But percentage is an important tool, especially for us set collectors. It tells you where you are on the journey. I use percentages a lot in my hobby, but one area where I haven't bothered is as far as individual players' cards. I know the totals I have for each of the top players in my collection, thanks to TCDB, but I haven't bothered to look up the percentages. In other words, how far am I in terms of owning every card of a particular player -- or at least every card listed on TCDB?   I got curious when I received a handful of Mike Piazza cards from Mark, formerly of the blog Stats on the Back and currently of IDrawBaseballCards . He is downsizing his Piazza collection to just Mets cards, for whatever inconceivable reason, and offered me anything non-Met in his collection.   These are the items I did not have already (I'm not in the habit of grabbi...