“Good players practice until they get it right, great players practice till they can’t get it wrong.”
I’ve seen my own clients do this in lessons. We will be working on a curveball, but he’s all over the place. After a little guidance, he’ll throw a few more curves until he finds his release point. After finding it, resulting in one perfect curve after 10 really bad ones, the client assumes he’s finally gotten the curve down, and immediately moves on to throwing changeups.
I see this all the time, and all the time I stop my athletes from moving on and make them throw several more pitches until they feel a consistency and rhythm in throwing the pitch. Then we use it in sequences so he learns how to bounce from one pitch to another and intuitively find that “feel”.
Throwing different pitches involves learning different hand, wrist, finger and arm articulations (movements) that are intricate and done at high speeds. Simply hitting one pitch one time is not enough to move on to other pitches.
The same is said for any position on the field or any other sport. Execution is a combination of skill, power, agility and quickness all rolled into one. Performing in games is about feel rather than results. Train to acquire feel and repetitiveness. Executing this skill repeatedly creates “feel” (muscle memory/proprioception). During competition, the best players are usually the ones that can “feel” rather than “think”. Leaving the thinking for the strategy, and the feel for the execution.
When doing lessons or working on your own, make sure you can “feel” the right way to throw the pitch not once, but several times before moving on.