http://iscoresports.com/

Is there a way to delete all the information (teams, players, leagues) from the app. I want to get rid of everything and start new. Can I do this without deleting each player individually?

Easiest way is to delete the app, then re-install. However, you might get a new customer ID this way (which may not be a problem if you don't want old data anyway).

Customer ID will remain the same. Yes, that is the easiest way to completely start the data over.