The backswing; Does it add speed?

[Ken B]

I'm fairly certain that NCAA measures the radius from the center of the front edge like most other sanctions.

 

[Ken B]

We use a contraption to draw the circle and it is built to do the above.

I use a rake...

 

[X pitcher]

Here it is again. Read the 2nd post and my comment. The question should have been, is the back arm swing really good for anything and what are the benefits for using it. It sure is studied much by the science people. They should know.