Default Roster?

Where can I overwrite the default roster? In NBA Live 08, it's in the database folders...is this possible in 2K13?

Thanks!
Ontabok

the roster when you start up is automatically loaded from its roster.iff file either in the main folder or in the online downloads folder (official updates from 2K). There is no way to override that, you need to goto load roster every time you start the game.