Can my child run to first on a dropped third strike?

Yes. The uncaught third strike is in effect in Majors softball, the same as in high school softball.

The batter can run to first when strike three isn't caught and:

• first base is empty, or
• there are two outs.

The defense gets the out by tagging the batter or first base before the batter gets there. With first base occupied and fewer than two outs, the batter is out.