If it all default settings you would need to play 1 C, 1 1B, 1 2B, 1 SS, 1 3B, 5 OF 1 MI, 1 CI, 1 Utillity and 9 Pitchers and 3 bench spots and 1 DL. Rosters are set daily. Basically all you really have to do is make sure that if you have a player with a game on any given day, that he is in your starting lineup. If you have a full starting lineup and guys on the bench with games choose the best player available on that day. The inings limit for pitchers is so that people don't add and drop pitchers every day and gain an easy advantage in categories like wins, strikeouts, ect. The default limit is 200 games started. If you only have 6 starting pitchers you won't have to worry about going over that limit.