balk

[Whowefoolin]

Very hard in this type of forum. Read rule section 8 over and over and over. When you have a question, read it over again.

There are so many types of balks, that you can't begin to do that here.

My advise, have son remember when he is on and off the rubber. Be alert to it. When on it, be still and pitch. Be fluid. Step towards the base your throwing. Do not make any moves towards a base you don't anticipate to throw to.

...and have fun learning.