most leagues only let you have a total of 12 pitchers on your roster. I think you might be confusing that with how many SP you can use. You're allowed 7 add/ drops a week. Let's say you have 6-8 starters and they all pitch twice in a week you would be over your limit according to you. I doubt that's the case. I think you are misreading that. What it means is you can't have 13 pitchers on your roster at any one time.