http://iscoresports.com/

I didn't notice I had been scoring wrong players until we came back around for his second at bat. I kept detailed scoring on pitch location, etc for 9 batters in succession until discovering mistake (that and score was off by one run). Is there any way to just delete the erroneous player from the lineup at game level (pitch by pitch) and have stats associate with proper players or do I have to rescore from scratch based on manual scorebook (and lose pitch locations)

iScore tracks the at bats by batting lineup position. You can put whatever players you like in those positions by editing the starting lineup and performing substitutions as necessary. But if you scored for the wrong lineup positions, that will not be correctable without rescoring the game. You can get the full pitch location information from the iScorecast - you would not have to lose that information. If you did not use iScorecast, you can still send the game up to the iScorecast server by going to Game Manager, selecting the game, and scrolling down to iScorecast Synchronize and tapping that.