You must have at least 24 players and no more than 28 players. You must have at least 13 and no more than 17 hitters. - At least two of those hitters must have catcher as their primary position. You must have at least 10 and no more than 12 pitchers. You must have at least 5 pitchers who have starting pitcher Endurance ratings (e.g. S7). You must have at least 4 "pure" relievers (i.e. a relief rating (e.g. R2) but no starter rating).