http://iscoresports.com/

I apologize in advance if this has already been addressed...

My coach gives me our defensive positions for each inning in advance. Is there a way to input them in advance?

definitely is on the iOS devices (came out this year in version 3.0),
(I can not recall for sure on the android, but i think so)

when you set up a new game, in the line up screen, there is an option button on lower right, tap it. and choose preset fielders