Narrowing My Topic

My topic which if you don't know what it is Steroids in baseball. I believe I need to narrow my topic a bit but not too much or I wont have enough information to write my paper. My topic i believe i need to focus more on the effects of the steroids on the actual players. Instead of doing the broad topic of the history of steroid use in baseball i am going to focus on a couple players and go into depth about why they took the drugs and did they really help the players. Barry Bonds is one of the players that i will focus on and there are a few players mentioned in the Mitchell report that i will decide later on in my research who they will be. Finally i will try to end my essay on the consequences and how steroids are going taken out of the sport.