Every baseball card has four basic categories of statistics: Games(g), Runs(r), Walks(w) and Strike Outs(so). According to Nicodemus rules, the last will be first, but King Tigger Rules allow the higher cards to beat the lower ones. Special cards, such as All Star, Turn Back The Clock and Team Leaders must be judged as either parlodels(Tigger Rules again) or judged by their serial numbers.
Assign them arbitrary values. Grandmaster Kinboat's rules give out hundred point bonuses for diamonds, hearts, spades and clubs. There are at least 180 variations of point assignments.
Baseball cards fight other baseball cards based on games, runs, walks or strike outs in some games. With football cards, you must convert player numbers or tackles into games(g), assists or yards into runs(r), hurries or avg into walks(w) and td's, qb sacks or behind lines into strike outs. After this, you can use just about any football card on a baseball card.
The serial number is in the corner. It will usually say 100/150...something like that. This is your serial number.