Keilani Ricketts throws a "crop" or "crop duster" which is a form of the drop curve--that is why it is becoming stylish to throw drop curves. It comes in hard and breaks hard down and into left handers along the lines of slider in baseball.
My suggestion would be to learn a curve with proper mechanics. As the pitcher gets older, she will be able to get to sink. After that it is experimentation on how to make the ball sink more without losing the lateral movement. That being said, Ms. Ricketts can throw hers at 68 mph which is a plus.
My suggestion would be to learn a curve with proper mechanics. As the pitcher gets older, she will be able to get to sink. After that it is experimentation on how to make the ball sink more without losing the lateral movement. That being said, Ms. Ricketts can throw hers at 68 mph which is a plus.