There are TWO young children in "EVERYBODY'S ALL-AMERICAN".
It seems that the original commenter talked only about the boy, and forgot about the girl.

That's actually still quite common for the films on here, we started from a primarily boys-oriented source. Feel free to add any further information to any film on here that you may have.

Here is the full cast list:

http://www.imdb.com/title/tt0095119/fullcredits

I'm having trouble myself with finding those kids on that list.
Maybe somebody else here would know more than I do about it.