http://iscoresports.com/

I have an instance of during the game it was the called off during the 3rd inning cause of lighting and rain.
It was not an official game. I don't want it to show up as a loss. Is there any way of tagging it as cancelled?

You can delete the game if it does not count for anything. You can use "Leagues" to hide the game. You can leave it in an unfinished state (i.e. do not use "End Game") and that way you will see it is still in progress.