Pitching and Pitchers Discussion screwball

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Can someone describe in detail what a screwball looks like from behind the plate?

 

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Better than that, I can give you a link to a description and some video clips.

http://fast-pitch.com/screw_ball.html

 

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To help see the ball and it's spin effect. Use a training ball. Take a yellow ball and use a magic marker and mark a 1 inch line around the ball. Our pitching coach uses this so you can see the spin and see if a pitcher is throwing a pitch with the correct spin, Screwball, Riseball, Drop ball. Then as the web site shows you can see the spin.

 

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cs - the link was helpful, but I would like to know what the exact difference is between a screwball and a curveball, if there is any noticable difference from behind the plate.

 

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PS a screwball thrown by a right-hand pitcher will come into a right-hand batter on the hands. It may come in and down depending on the spin of the ball. A curveball will curve out away from the plate and the right-hand batter. It may go down a bit too.

 

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glevans - thanks so much for the decription. Now I know the rest of the story.