all started in 1978 with a rc of the "Ek" man, then the top 100 closers (up to date), then all HOF pitchers (done/up to date), then all nono/perfect game hurlers (still missing 2 out of 174 but up to date), then all pitchers who won a game on the winning team of the world series (done or up to date), then all 20 game winners (still missing 10 out of 382 but up to date), then all pitchers with over 1000 innings and a life time ERA under 3.00 (still missing 8 out of 123) and now any pitcher with a single season ERA under 3.00 with over 200 innings pitched... all post 1900 for a time line. It's great fun, I just wish more people here would sell their hard to find cards (E107 Hahn) for dirt cheap