There are two versions of the baseball fact cards, which I tend to keep separate from the quiz cards. Baseball fact cards with Save All 19 in red are much tougher than the blacks. I have the Mets black but still need the Mets red, but here is an example
Darn you Troy...now I need another Mets Quiz card---the RBI card with a red Mets
Fortunately there was one on ebay :-)