All cells have a cell membrane, one or more DNA chromosome(s), and cytoplasm.
1 No curveballs before age 14. 2  8-10 years old 52 pitches per game and no more than 2 games pitching per week 11-12 years old 68 pitches per game and no more than 2 games per week.3  Seek good pitching mechanics coaching and work on developing good balance trunk and lower extremity strength. 8-10 years old 52 pitches per game and no more than 2 games pitching per week 11-12 years old 68 pitches per game and no more than 2 games per week.
There is no slap hitting allowed. 8. When pitching, the pitcher must have both feet on the pitching rubber. 9. All girls on the bench shall bat. For example, if you have 13 girls present, all 13. girls will be put on your batting order sheet and all 13 girls will bat. All girls must. play at least 3 innings in the field that is 6 or more innings. 10. If a catcher is a base runner and there are two outs, a courtesy runner may be. used for the catcher to speed up play.