Fantasy Baseball

I am working on a fantasy baseball website that runs fantasy baseball leagues. I need a full website with admin capabilities that can host leagues. I need members that come to the site, sign-up for a league and are placed in it, have a draft, etc...they need to sign into their league and be able to see updated rosters, change their line-up for the current day and view statistics that need to be updated. I will need total control from the admin to make changes to the teams. After you set it up you will not be needing to do any more work, until maybe football season.