http://iscoresports.com/

Is there a way to use the app to practice scoring a game?
Thanks

You can create a pretend game between any two teams you create and practice scoring with those teams. When you are done, you can just delete the game.

Until MLB starts up you can find some college softball and baseball games on TV and online. You can watch those and try scoring on iscore as you go. Added benefit of being able to stop, rewind if it's recorded.