It is illegal in all forms of baseball, and has different penalties depending on the situation: if there is no one on base, the pitch is called a ball, but if there is any number of runners on base, it is ruled a balk.
It is illegal in all forms of baseball. It has different penalties depending on the situation. The pitch is called a ball. There is no one on base. It is ruled a balk. There is any number of runners on base.