Since your DD is pitching in college, the focus is on whether she is "getting batters out".
If your DD throws a good rise, she doesn't need a good DB. Also, control is just if not more important than movement.
If you are trying to get some read from these pictures as to whether she is throwing it correctly, I don't see anything to indicate it is a good drop or a bad drop. You really need to show the entire pitch.
1) You need a video of her fingers at release. At release, the fingers (*NOT THE HAND*) should be either snapping up or doing the "come here" motion. I don't see that in the sequence, but maybe you left it out.
2) You need a video showing how quickly her hand rotates from facing 3B to facing 1B. The quicker the hand rotates, the more spin she puts on the ball.
Here is a video. Riseball is never called....normally curve or fastball. D isn’t a flamethrower, so we have focused more on the drop ball and drop curve....seemed to have worked a lot better than throwing an outside fastball. Her drop curve is thrown at 2 different speeds..worked better since a change up is hardly called.
I thought this was an interesting observation...her drop spin is near perfect with this release. She was struggling at the beginning of the season...was getting a bullet spin.
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