What does dropping the arm angle do?

[DrxDrO]

when I watch yankee games and they have to face that monster named Roy Halladay.

I always hear about how the Jays sent him down to the minors and to reinvent him and make his arm slot/angle drop a bit lower.

What does that do, what are the downsides and is it safe for somebody at age 14 to do something like that?

thanks

[DrxDrO]

http://www.cbc.ca/sports/indepth/gfx/roy-halladay.jpg


Here is a picture of him now

[cubsphill]

itll get you some more movement

[Chris O'Leary]

itll get you some more movement

Yes.

It will generally get you more movement (e.g. tail) on your fastball. However, it will tend to turn you curve into more of a slurve.

I'm not convinced that it increases the risk of injury (not directly at least).