Baseball card stats include ERA (Earned Run Average), WEIGHT (the WEIGHT of the player), DOB (Date of Birth), RBI (Runs Batted In) and RBIS (Runs Batted In Season). ERA is a statistic used to measure the number of runs a pitcher gives up over a nine-inning period. WEIGHT is the WEIGHT of the player, which can be important for certain positions. DOB is the date of birth of the player, which can be used to determine their age. RBI is a statistic that measures the number of runs a batter has driven in during a game. RBIS is the total number of runs batted in during a season.