http://iscoresports.com/

Today I scored a game with an imported USSSA lineup, the Import brought in 13 players without issue.

I created the line up started scoring the game, and didn't realize I made a mistake and the 13th batter was a sub, until she was supposed to get up. So I went to starting lineup, made the correction and scored the game fine.
But looking at the score card, instead of the at batting being applied to the #1 batter, in the inning wrap up after the last (12th) batter shows the at bat as a 13th batter.

How to correct this w/o reentering the entire game?

If you enter the at bat for the 13th batter, it will always be associated with the 13th batter. If you notice an extra batter coming up, you would want to change the starting lineup (as you did), use Undo, then re-enter the last pitch, and iScore will then see there are only 12 batters and wrap back around to the first batter.

If this was only done the first time through the lineup, you can sub the 1st batter into the 13th spot so that player gets credit for the at bat.

That's my point, I didn't enter any pitch for the batter, I caught it before her at bat started. So when I realized the error I removed her from the starting lineup - I changed batting to no.

Score the rest of the game properly, everything is right, except when I view the score card, and i'm sure the stats are off for batter #1.

As noted, you would have to use Undo so that the 13th position is not at the plate, then edit the lineup, then enter the last pitch again so it wraps back to the first batter.

You can put the first batter in the 13th spot just for that at bat, then put them back in the first spot using post game edits as described here:

http://iscoresports.com/baseball/kb/faq ... _edits.php