Forget thinking about me, dreaming of being a pitcher this is on of the things that requires concentration to do. That plus there are no real numbers in it. It is all muscle sense muscle action and timing. For added thought points their is what are they doing when the ball does such and such.
In the afternoon after the lunch and sometime to think I will go upstairs to the 6 floor of what used to be the Gunnny's Building. I will spend about an hour throwing the ball. Early on I made the mistake of rushing the ball. Throwing with the arm not the body. The shoulder must be pulling the arm around for the real fast balls.
The simple motion of the wirst in these thows is important. I case where speed of the ball is above 80 to 90 m.p.h. Slow is important! Home plate is sixty feet away. What can you do that will happen in sixty feet. Your holoding the ball for about seven feet over the whole throw. If the ball over the sixty feet makes 180 degree turn it will be spinning backwards. So from your arm all the way back to all the way forward how much of a turn should it do. Around an eight of a turn. This will sink as it gets to the plate. Now if this pitch is spotted, over do it a little it will be between the no sink and sinking, but will look like the the sinker.
The knuckleball is now all but gone and very unrelyable. One can not count on it being all that active. The ball usually rests on the finger nails. The wrist must be stiff and no spin put on the ball. The laces of the ball our positioned to add drag to the ball, so it will be move in one direction. The side top or buttom with no laces on it will move fast and the ball will go in the oposite direction. Now if you can make that work, it will not work all the time for various reasons. Tired arm, lack of concentration or just an off day. The ace in the hole for an off day. My finger nails are rounded so that the edge of the nails can be off the ball. This throw is like the throwing of a clay piegon, the ball is going to slide off the fingers. This ball will sink like a rock. I the player is expecting you to throw a fat ball he will be in trouble. Phil Niekro used to throw a ball that did just that. I cannot say for sure how he did it but this is how I found I could do it.
Never ever say and show what you are doing with the ball. People can not pick it up easily at speed but is explained and shown the motion they can. Tell catcher what you can do but not how